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Evaluation Of Heavy Metal Bioaccumulation And Growth In Hemp From Chicken Manure, Vermicompost, And Wastewater Sludge With Biochar And Health Risk Assessment, Chutiphan Sangsoda
Evaluation Of Heavy Metal Bioaccumulation And Growth In Hemp From Chicken Manure, Vermicompost, And Wastewater Sludge With Biochar And Health Risk Assessment, Chutiphan Sangsoda
Chulalongkorn University Theses and Dissertations (Chula ETD)
Hemp (Cannabis sativa L.) has become an economically valuable crop with a wide range of benefits. To promote more sustainable agricultural systems, the use of recycled substrates has increasingly replaced traditional fertilizers. However, substrates such as dry chicken manure, vermicompost, and wastewater sludge (WWS) combined with biochar often contain heavy metal contaminants, which may pose health risks through exposure to hemp. This study investigated three cultivars Rosella, Superwoman S1, and Red Robin over a 120-day period. The objectives were: (1) to compare the effects of dry chicken manure, vermicompost, and wastewater sludge (with and without biochar) on soil nutrient quality …
Interaction Between Extreme Temperature Events And Air Pollution On Mortality In Thailand : A Nationwide Time Series Study, Phichet Khunthong
Interaction Between Extreme Temperature Events And Air Pollution On Mortality In Thailand : A Nationwide Time Series Study, Phichet Khunthong
Chulalongkorn University Theses and Dissertations (Chula ETD)
Climate change has increased the frequency and intensity of extreme temperature events (ETEs; heat and cold waves), concomitantly affecting PM2.5 fluctuation. However, limited research has investigated the interaction of ETEs and PM2.5 on mortality, particularly in tropical regions where the interaction could influence differently from cold countries. A two-stage time-series using distributed lag non-linear models was employed to estimate region-specific relative risks and 95% confidence intervals (RRs and 95% CIs) of ETEs and PM2.5 on daily cardiovascular and respiratory mortality. The relative excess risk due to interaction (RERI) was examined to quantify additive effects. Cold waves had the greatest effect …
Ecological Toxicology Impact From Soap Manufacture: Applications Of Carbon Footprint For Organization And Carbon Footprint Of Product, Tanaporn Chanaphirak
Ecological Toxicology Impact From Soap Manufacture: Applications Of Carbon Footprint For Organization And Carbon Footprint Of Product, Tanaporn Chanaphirak
Chulalongkorn University Theses and Dissertations (Chula ETD)
The assessment of greenhouse gases to identify ways to reduce global warming was of enormous importance worldwide. This study assessed the carbon footprint of an organization and the carbon footprint of products within the herbal soap manufacturing industry, following the guidelines of the Thailand Greenhouse Gas Management Organization (TGO). It also evaluated the environmental toxicity of soap production. The study found that the organization’s carbon footprint amounted to 551 tCO2 equivalent, with Scope 3 emissions being the highest at 359 tCO2 equivalent, followed by Category 1 products and services, which accounted for 208 tCO2 equivalent. Scope 1 emissions were 176 …
Spatio-Heterogeneity Risk Assessment From Microplastic Contaminations In Water And Sediment Of The Inner Gulf Of Thailand, Sarayut Suanluang
Spatio-Heterogeneity Risk Assessment From Microplastic Contaminations In Water And Sediment Of The Inner Gulf Of Thailand, Sarayut Suanluang
Chulalongkorn University Theses and Dissertations (Chula ETD)
The inner Gulf of Thailand, a shallow semi-enclosed marine basin, plays a vital economic and ecological role for Thailand, yet faces increasing threats from microplastic (MP) pollution driven by urbanization, industrial and agriculture developments, and riverine discharges. This study aimed to assess the spatial and vertical distributions, polymer characteristics, and ecological risks associated with MP contamination in water columns and surface sediments throughout the inner Gulf. Sampling was conducted at 13 stations, with water collected from surface, mid-depth, and bottom layers, and sediment samples taken from corresponding surface sediments. MPs were analyzed for abundance, size, shape, color, and polymer composition …
Stakeholder Information Interdependence Mapping For Area-Business Continuity Management: A Case Study Of Flood In Industrial Areas In Thailand, Penpitcha Arayachookiat
Stakeholder Information Interdependence Mapping For Area-Business Continuity Management: A Case Study Of Flood In Industrial Areas In Thailand, Penpitcha Arayachookiat
Chulalongkorn University Theses and Dissertations (Chula ETD)
The great flood of 2011 in Thailand significantly disrupted supply chains and caused substantial economic damage. The concept of Area-Business Continuity Management (Area-BCM) was developed. This concept aims to enable vulnerable areas to maintain operations during crises. This research focuses on understanding the information interdependence among stakeholders involved in Area-BCM. Its objective is to develop an information interdependence map for Area-BCM, using a case study of flood events in three industrial areas in Phra Nakhon Si Ayutthaya Province. The study employed a qualitative research approach, collecting and analyzing data through in-depth interviews with various stakeholders. The data analyzed was then …
Development Of A Forest Fire Detection Device Based On Agent-Based Simulation, Teerapat Tappanom
Development Of A Forest Fire Detection Device Based On Agent-Based Simulation, Teerapat Tappanom
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study had three main objectives: to identify the factors influencing forest fire spread, to design and develop a forest fire spread model, and to design and develop a forest fire detection device. The researcher utilized scatter plots, correlation analysis, and multiple linear regression analysis based on climatic data collected from the Chiang Mai Meteorological Station between 1998 and 2021 to investigate the parameters affecting fire spread. A forest fire spread model was developed using an Agent-Based Model (ABM) in AnyLogic 8.8.3 Personal Learning Edition to estimate the burned area under different scenarios with wind directions set to the north …
Health Impact Assessment From Fine Particulate Matter Pm10 And Pm2.5 In Thailand, Phawichsak Prapassornpitaya
Health Impact Assessment From Fine Particulate Matter Pm10 And Pm2.5 In Thailand, Phawichsak Prapassornpitaya
Chulalongkorn University Theses and Dissertations (Chula ETD)
The rapid urbanization and industrial sector have caused significant air quality problems. In particular, the concentration of fine particulate matter (PM10,PM2.5) is an assessment of the impact of fine particulate matter. Health The main objective of this study was to compare PM10 and PM2.5 levels and temporal trends from 2015 to 2019, and to develop a model to forecast particulate matter concentrations using multiple linear regression analysis. Multiple Linear Regression (MLR) to assess the association between particulate matter exposure and daily hospital visit for respiratory diseases. (ICD-10: J00-J99) and identify vulnerable populations. In the research, PM10 and PM2.5 air quality …
Risk Assessment Of Microplastics Contamination In Soil And Leachate From Different Ages Of Landfill, Panuwat Koonmee
Risk Assessment Of Microplastics Contamination In Soil And Leachate From Different Ages Of Landfill, Panuwat Koonmee
Chulalongkorn University Theses and Dissertations (Chula ETD)
Landfills were used for the disposal of waste materials, but they could contribute to microplastic (MP) pollution. MPs waste had been released in landfills into the surrounding environment, contaminating soil and leachate collection pond. Although there were many reports that MPs could generate in leachate and soil samples from the landfill, it exists many blanks for the evolution of physical and chemical characteristics of MPs with different landfill age. In order to address the question of changing in the abundances and characteristics of MPs in different ages of landfill as potential sources of contamination and the efficacy of existing landfill …
Relationship Between Microbial And Chemical Risk After Chlorination Of Domestic Wastewater For Discharge And Reclamation, Rotsathon Plumsut
Relationship Between Microbial And Chemical Risk After Chlorination Of Domestic Wastewater For Discharge And Reclamation, Rotsathon Plumsut
Chulalongkorn University Theses and Dissertations (Chula ETD)
Disinfection is crucial for protecting public health during wastewater reuse. Chlorination is a widely used disinfection method, but it also leads to the formation of disinfection byproducts (DBPs), which can pose environmental and health risks. Among these DBPs, haloacetonitriles (HANs), particularly dichloroacetonitrile (DCAN), are of significant concern due to their toxicity. This research investigated the relationship between microbiological and chemical risks associated with chlorination in secondary and tertiary wastewater treatment plants (WWTPs) in Bangkok. The study found that secondary wastewater (9.0-14.0 mg/L) required up to 10 times higher initial chlorine levels to achieve the same norovirus reduction levels (3-5 log …
Silica Dust Exposure Assessment Using Job-Exposure Matrix:A Case Of Sandstone Workers In Thailand, Chamaiphon Chari
Silica Dust Exposure Assessment Using Job-Exposure Matrix:A Case Of Sandstone Workers In Thailand, Chamaiphon Chari
Chulalongkorn University Theses and Dissertations (Chula ETD)
Respirable crystalline silica (RCS) has been classified as a human carcinogen by the International Agency for Research on Cancer (IARC). In Thailand, household sandstone workers were one of the most susceptible occupational groups to silicosis. However, a lack of current information about their work patterns and job-related exposures to respirable crystalline silica could hinder the success of tracking and surveillance programs. This study was conducted to explore working characteristics and patterns, and to evaluate the work diary data in the estimation of RCS exposure and health risk among household sandstone workers. All data were collected from a work diary record …
Influence Of Tidal Current On Heavy Metal Dynamics In The Chao Phraya River Estuary, Kansiri Silrat
Influence Of Tidal Current On Heavy Metal Dynamics In The Chao Phraya River Estuary, Kansiri Silrat
Chulalongkorn University Theses and Dissertations (Chula ETD)
The Chao Phraya River estuary, a vital ecological and economic region in Thailand, faces significant contamination challenges due to anthropogenic activities. This study aims to investigate the influence of tidal currents on the dynamics of heavy metals (HMs) in the estuarine ecosystem, focusing on cadmium (Cd), arsenic (As), lead (Pb), copper (Cu), and zinc (Zn). A sampling was conducted over two tidal periods on April 29-30, 2021, including both surface and vertical water samples and surface sediment collected at multiple tidal currents. The results reveal notable variations in HMs concentrations influenced by tidal cycles. For water samples, cadmium concentrations ranged …
Heavy Metal Distribution Pattern And Potential Ecological Risk In Roadside Soils As A Function Of Highway Traffic, Wassamon Thongaiod
Heavy Metal Distribution Pattern And Potential Ecological Risk In Roadside Soils As A Function Of Highway Traffic, Wassamon Thongaiod
Chulalongkorn University Theses and Dissertations (Chula ETD)
Roadside soil contamination by heavy metals due to traffic pollution presents a significant environmental concern. Assessing concentration levels and evaluating ecological risks are crucial steps toward understanding and mitigating this issue. This study focuses on soil properties and the presence of arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), lead (Pb), and zinc (Zn) along two high-traffic highways in Thailand. The empirical geological background was determined by sampling the parent materials. Out of 40 roadside soil surface samples collected, the average levels of Cu, Pb, and Zn surpass background concentrations. Significant differences in heavy metal concentrations between the two highways …
Trihalomethane Formation Potentials From Effluent Of Different Wastewater Treatment Sources And Health Risk Assessment, Kangsadal Phlaengsattra
Trihalomethane Formation Potentials From Effluent Of Different Wastewater Treatment Sources And Health Risk Assessment, Kangsadal Phlaengsattra
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study aimed to investigate the levels of THMs and THM formation potentials (THMFP) in treated wastewater originating from different sources i.e., domestic, food-processing industry and hospital, and to evaluate the maximum potential carcinogenic risk through dermal exposure. The samples from each source were collected three times between June and August 2023. Dissolved organic carbon (DOC), ultraviolet absorbance at 254 nm (UV254), and specific ultraviolet absorbance (SUVA) were evaluated from the samples prior to and after disinfection with chlorine over 7 days. The results found that the concentration of DOC was highest in hospital effluent, with an average value of …
Health Risk And Ecological Risk Assessment From Microplastic Contamination In Sea Salt : Case Study In Ban Laem Salt Field, Phetchaburi, Thailand, Kusuman Promdontree
Health Risk And Ecological Risk Assessment From Microplastic Contamination In Sea Salt : Case Study In Ban Laem Salt Field, Phetchaburi, Thailand, Kusuman Promdontree
Chulalongkorn University Theses and Dissertations (Chula ETD)
Microplastics are ubiquitous in all terrestrial and aquatic environments. In this research, microplastic contamination in sea salt produced from traditional and plastic salt fields was studied. Including seawater used as a raw material for producing sea salt in Ban Leam salt fields, Phetchaburi, Thailand. Random samples were collected 3 replicates per point, for a total of 42 samples. 5M NaCl solution was used to separate the density and digest the organic substances using 0.05 M Fe (II) and 30% H2O2. The shape and color of the microplastics were characterized using a 30x magnification microscope. The amount, size, and polymer type …
Evaluation Of Recreational Surface Water Quality According To Water Quality Index And Quantitative Microbial Risk Assessment Of Noroviruses And Sars-Cov-2, Parichart Soisoongnern
Evaluation Of Recreational Surface Water Quality According To Water Quality Index And Quantitative Microbial Risk Assessment Of Noroviruses And Sars-Cov-2, Parichart Soisoongnern
Chulalongkorn University Theses and Dissertations (Chula ETD)
Outbreak of waterborne virus are the major concern worldwide. The Water Quality Index (WQI) is a tool used to assess water quality for related activities. However, its suitability for assessing risks associated with waterborne pathogens remains questionable. This study aims to identify potential limitations and gaps in the WQI, especially in the context of risks from waterborne pathogens. The WQI of Maha Sawat Canal (MSC), Thailand was evaluated during both wet and dry seasons. The results were then integrated with the quantitative microbial risk assessment (QMRA) methodology for norovirus GI (NoV GI) and SARS-CoV-2. The results have shown that NoV …
Correlation Between Virus Reduction And Trihalomethanes Risk After Chlorine Disinfection, Waraporn Khantong
Correlation Between Virus Reduction And Trihalomethanes Risk After Chlorine Disinfection, Waraporn Khantong
Chulalongkorn University Theses and Dissertations (Chula ETD)
While wastewater disinfection is essential to mitigate the threats from waterborne pathogens, there arises a potential risk from disinfection byproducts. Striking a balance between achieving microbial reduction and managing the occurrence of disinfection byproducts is crucial for maintaining both microbial and chemical risks at acceptable levels. The cancer risk assessment was based on THMs through of oral ingestions, inhalation absorptions, and dermal absorptions exposure. This study aims to investigate the relationship between virus reduction and THMs formation, and to assess their respective cancer risk levels post-chlorination, and determined treatment process was used to decreased cancer risk post-chlorination. Effluent wastewater was …
Risk Assessment Of Leached Heavy Metals From End-Of-Life Thin Film Solar Photovoltaics, Pornnapat Ruengrit
Risk Assessment Of Leached Heavy Metals From End-Of-Life Thin Film Solar Photovoltaics, Pornnapat Ruengrit
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study investigated the risk of heavy metal leaching from end-of-life thin film solar photovoltaic (PV) panels, commonly disposed of in landfills, potentially contaminating groundwater. Various heavy metals including Al, Ag, Cd, Cu, Cr, Fe, Ga, In, Mo, Ni, Pb, Se, Te, As, Mn, and Zn were studied for leaching using standard methods such as TCLP and SPLP. The research compared the efficacy of these methods and examined the announcement of the Ministry of Industry regarding the disposal of waste or unused materials, B.E. 2023. Aging processes were applied to thin film PV samples including a-Si, CIGS, and CdTe. The …
Correlation Between Meteorological Conditions, Pm2.5, And Covid-19 Mortality In Thailand, Viranphat Singrakphon
Correlation Between Meteorological Conditions, Pm2.5, And Covid-19 Mortality In Thailand, Viranphat Singrakphon
Chulalongkorn University Theses and Dissertations (Chula ETD)
The appearance of a new strain of coronavirus led to a worldwide health crisis, affecting public health and economies globally, including Thailand since 2019. Previous research had suggested possible links between environmental factors and the surge in COVID-19 cases, but these connections remained uncertain. This study examined the ratios of indoor to outdoor (I/O) environments and investigated potential associations between fine particulate matter (PM2.5), meteorological conditions, and the Case Fatality Rate (CFR%) of COVID-19 in Bangkok and its surrounding metropolitan area from January to December 2021. Through Spearman’s Rank correlation analysis, the findings indicated a positive correlation between CFR% and …
Effects Of Tidal Variations On Nutrient Dynamics In The Chao Phraya River Estuarine Ecosystem, Korawee Khongmanont
Effects Of Tidal Variations On Nutrient Dynamics In The Chao Phraya River Estuarine Ecosystem, Korawee Khongmanont
Chulalongkorn University Theses and Dissertations (Chula ETD)
The Chao Phraya River estuary is a coastal ecosystem that is very important for both ecological and economic services. Moreover, it is a very complex and constantly changing ecosystem due to pollution loading from human activities through the river freshwater runoff. On the other hand, the Chao Phraya River estuary is also polluted by the influence of tidal currents of the inner Gulf of Thailand. One of the most important and persistent problems in this ecosystem is eutrophication and its effects. Therefore, the present study is aimed to improve “how freshwater runoff and tidal phenomena are affecting nutrient dynamics in …
Fecal Microbiome In Lead-Exposed Industrial Workers, Chatchawan Praditwongsin
Fecal Microbiome In Lead-Exposed Industrial Workers, Chatchawan Praditwongsin
Chulalongkorn University Theses and Dissertations (Chula ETD)
Lead exposure in industrial environments poses serious health risks. While its detrimental effects on human health are well-known, the connection between lead exposure and alterations in the fecal microbial community remains largely unexplored, highlighting a critical gap in our understanding of its wider health implications. This study explores the fecal microbiota of workers in a lead-utilizing factory, comparing individuals with blood lead levels (BLLs) above and below 3.06 µg/dL, and between those exposed to lead and those not exposed. The results demonstrate a strong correlation between lead exposure and BLLs, especially at levels below 3.06 µg/dL, with significant changes noted …
Forecasting Cane Sugar Production Under Climate Change And Human-Ecotoxicological Impact, Arisara Tachabunya
Forecasting Cane Sugar Production Under Climate Change And Human-Ecotoxicological Impact, Arisara Tachabunya
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study forecasted sugar cane yield and cane sugar production using stepwise multiple linear regression (MLR) and autoregressive integrated moving average (ARIMA). Then, impacts on human health and ecosystems at the endpoint level were evaluated using openLCA software version 1.10.3 and the ReCiPe 2016 method. The functional units were the production of 1 kg raw sugar, 1 kg granulated sugar, and 1 kg refined sugar at Tamaka Sugar Industry Co., Ltd., Kanchanaburi province, Thailand. The result revealed that relative humidity at the Thong Pha Phum meteorological station, maximum temperature at the Kanchanaburi meteorological station, and oceanic Niño Index (ONI) were …
Influence Of Tidal Current On Microplastic Dynamics In Chao Phraya River Estuarine Ecosystem, Jiradet Tang-Siri
Influence Of Tidal Current On Microplastic Dynamics In Chao Phraya River Estuarine Ecosystem, Jiradet Tang-Siri
Chulalongkorn University Theses and Dissertations (Chula ETD)
Microplastics (MPs) can be found almost everywhere in marine ecosystems. That is one of the issues of concern around the world, including in Thailand. Estuary ecosystems are also among the most disturbed. By the estuary ecosystem affected by both rivers and oceans, such as the mouth of the Chao Phraya River in Thailand. Due to the change in tide, it is necessary to study the effects of tidal currents on the depth of MPs. Water samples were collected at approximately 60 water levels in 24 hours. Samples and three water quality indicators were collected at Pak Nam Chao Phraya. The …
Wastewater-Based Epidemiology And Quantitative Microbial Risk Assessment Associated With Wastewater Contact Of Norovirus In Bangkok, Thailand, Nonnarit Sriporatana
Wastewater-Based Epidemiology And Quantitative Microbial Risk Assessment Associated With Wastewater Contact Of Norovirus In Bangkok, Thailand, Nonnarit Sriporatana
Chulalongkorn University Theses and Dissertations (Chula ETD)
Norovirus is one of the leading causes of acute gastroenteritis worldwide. Wastewater surveillance offer significant benefits such as enhancing our understanding of the disease occurrence in the population, evaluating the effectiveness of pathogen reduction in the treatment process, and tracking the spread of pathogens in the environment which pose a health risk to humans. Hence, wastewater surveillance is crucial. In this study, the influent and effluent samples were collected bi-monthly from March 2020 to March 2021 from three distinct wastewater treatment plants in Bangkok. Wastewater samples were concentrated and subjected to quantitative polymerase chain reaction (qPCR) to assess norovirus concentrations. …
Effect Of Air Pollution On Number Of Visits With Pneumonia And Influenza:Before Vs. During Covid-19 Outbreak In Thailand, Benjawan Roudreo
Effect Of Air Pollution On Number Of Visits With Pneumonia And Influenza:Before Vs. During Covid-19 Outbreak In Thailand, Benjawan Roudreo
Chulalongkorn University Theses and Dissertations (Chula ETD)
The COVID-19 pandernic had effect on changes in people, environment, and health risk. This was a unique research opportunity to assess the effects on the risk of respiratory infectious diseases resulting from the changes in air pollution during COVID-19 outbreak. This study estimated the relative risks (RRs) of hospital visits with pneumonia and influenza associated with air pollution (PM10 PM25 NO2 and ⊖ y} by using Poison with generalized additive model (GAM) and compared the different RRs of pneumonia and influenza before vs. during the COVID-19 outbreak in Khon Kaen province and its vicinity. For results, before the COVID-19 period, …
Pesticide Intoxication On Hepatic And Renal Functions Among Farmers In Nakhon Ratchasima, Thailand, Ekarat Sombatsawat
Pesticide Intoxication On Hepatic And Renal Functions Among Farmers In Nakhon Ratchasima, Thailand, Ekarat Sombatsawat
Chulalongkorn University Theses and Dissertations (Chula ETD)
In developing countries, pesticides are commonly used to protect crops and increase productivity among agricultural workers. These might cause effects to their health. The study aimed to compare the various variables between the pesticides unexposed and unexposed groups and find an association between pesticide intoxication on erythrocyte acetylcholinesterase (AChE), and hepatic and renal functions in farmers. A comparative cross-sectional study was conducted with 30 nonfarmers and 71 farmers during August to October 2022. Socio-demographic characteristics and variables related to pesticide exposure were collected using a questionnaire-based interview. The erythrocyte AChE inhibition, hepatic, and renal functions were measured by EQM Test-mate …
Health Risk Assessment For Heavy Metals In Chao Phraya River Basin, Natthanicha Nateekhuncharoen
Health Risk Assessment For Heavy Metals In Chao Phraya River Basin, Natthanicha Nateekhuncharoen
Chulalongkorn University Theses and Dissertations (Chula ETD)
Heavy metal contamination has become a serious concern due to its toxicity not only on ecosystems but also directly on human health. The Chao Phraya River Basin is the main area important for commerce, industries, and residence in Thailand. This study aimed to evaluate the impact on human health due to heavy metal contamination and identify the relationship between land use and heavy metal contamination in the Chao Phraya River. Pearson correlation was applied to analyze the relationship between heavy metal concentration and water parameters. The results indicated that during 2009-2013, Fe concentration positively correlated to turbidity (0.640), total phosphate …
Integrating Human And Ecotoxicological Impacts Into Willingness To Pay Evaluation: Transition From Paraquat To Atrazine Use In Sweet Corn Cultivation, Patharanun Toolkiattiwong
Integrating Human And Ecotoxicological Impacts Into Willingness To Pay Evaluation: Transition From Paraquat To Atrazine Use In Sweet Corn Cultivation, Patharanun Toolkiattiwong
Chulalongkorn University Theses and Dissertations (Chula ETD)
The paraquat ban has led to a shift in the use of pesticides in sweet corn cultivation, atrazine as one of the alternative pesticides. This change has led to altered human-ecological impacts that have yet to be explored. The related monetary values of farmers as reflected through their willingness to pay is unknown. This study assessed the health and freshwater ecotoxicity impacts of paraquat and atrazine in soil cultivation using the USEtox 2.12 model. The value of farmers on the impact of the change was explained by willingness to pay (WTP). The theory of planned behavior (TPB) factors, a psychological …
Assessments Of Chromium Pollution In Surface Sediment Of The Inner Gulf Of Thailand, Patcha Leelakun
Assessments Of Chromium Pollution In Surface Sediment Of The Inner Gulf Of Thailand, Patcha Leelakun
Chulalongkorn University Theses and Dissertations (Chula ETD)
The inner Gulf of Thailand is an important marine resource for economic and social developments of Thailand. Moreover, the inner Gulf of Thailand is a diverse of biological coastal ecosystem, which is make an equilibrium marine environment. On the other hand, this area is due mainly to a variety of pollutant sources from the surface runoff, particularly major large rivers including the Mae Klong, the Tha Chin, the Chao Phraya and the Bangpakong Rivers. As a result, chromium contamination can occur in the inner Gulf of Thailand and ultimately become a serious environmental issue in Thailand. Therefore, the surface sediments …
Evaluation Of Cadmium Bioaccumulations In Pak Choi Grown By Hydroponics System, Piyachet Jinsart
Evaluation Of Cadmium Bioaccumulations In Pak Choi Grown By Hydroponics System, Piyachet Jinsart
Chulalongkorn University Theses and Dissertations (Chula ETD)
Cadmium is one of the most harmful heavy metals reported to contaminate the food chain and pose a high risk for health, including non-carcinogenic and carcinogenic effects. High levels of cadmium contamination due to industrial effluent discharge have been reported to affect plant growth and productivity, which could be used as a bio-indicator for cadmium bioaccumulation in plants. The utilization of cadmium-contaminated water for vegetable production has been known to increase the health risk for human consumption. Moreover, pH level was known as a factor affecting cadmium solubility and cadmium uptake by plants. However, there is still unknown about critical …
Influence Of Seasonal Variations On Contamination Level And Ecological Risk Of Heavy Metals In The Surface Sediments Of The Inner Gulf Of Thailand, Phuttiphat Lapat-Atiwat
Influence Of Seasonal Variations On Contamination Level And Ecological Risk Of Heavy Metals In The Surface Sediments Of The Inner Gulf Of Thailand, Phuttiphat Lapat-Atiwat
Chulalongkorn University Theses and Dissertations (Chula ETD)
The Inner Gulf of Thailand is a marine resource that provides ecological and economic value. Meanwhile, its can be acted like pollutions sink, especially heavy metals. After that, the extensions of industrialization, agriculturalization, and urbanization can degenerate to the inner Gulf environment quality. Therefore, this thesis was aimed to study the spatial distribution and seasonal variation of heavy metal concentration (Cd, Pb, Cu, Co, Ni, Mn and Zn) in surface sediment including the Mae Klong, the Tha Chin, the Chao Phraya and the Bangpakong River estuaries. Moreover, the contamination status and ecological risk were also evaluated. The results shown the …