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First Record Of Saemundssonia Australis Timmermann, 1955 (Mallophaga: Phthiraptera) From Lesser Sheathbill, Chionis Minor (Charadriiformes: Chionididae) In The Prince Edward Islands, Ross Gordon Cooper, Hytham Eldoumani, Ilmars Duritis, Tensingh Gnanaraj, Jaroslaw Horbanczuk
First Record Of Saemundssonia Australis Timmermann, 1955 (Mallophaga: Phthiraptera) From Lesser Sheathbill, Chionis Minor (Charadriiformes: Chionididae) In The Prince Edward Islands, Ross Gordon Cooper, Hytham Eldoumani, Ilmars Duritis, Tensingh Gnanaraj, Jaroslaw Horbanczuk
Turkish Journal of Zoology
The object of the study was to devise a quick and reliable method for the collection and study of lice present in birds without harm or stress being inflicted on the birds. Described is the feather ruffling collection of parasitic lice Saemundssonia australis from Chionis minor and microscopic observations thereof. A random selection of 10 free-flying Lesser Sheathbills were caught on Marion Island (46°54´S, 37°45´E) with the aid of a hand net. Approximately 10 lice from each bird were collected. Examination of microphotographs of male and female lice was made. The sex ratio of parasites was approximately equal. All collected …
Freshwater Ostracoda (Crustacea) Of Diyarbakır Province, Including A New Report For Turkey, Derya Akdemi̇r, Okan Külköylüoğlu
Freshwater Ostracoda (Crustacea) Of Diyarbakır Province, Including A New Report For Turkey, Derya Akdemi̇r, Okan Külköylüoğlu
Turkish Journal of Zoology
During the summer (July-August) of 2007, a total of 23 freshwater ostracods belonging to 14 genera were collected from 50 out of 90 different bodies of water in Diyarbakır. Of these 23 finds, Herpetocypris intermedia is a new report for Turkish ostracod fauna. In addition, 11 species (Ilyocypris decipiens, I. inermis, Eucypris virens, Herpetocypris brevicaudata, Psychrodromus fontinalis, Isocypris beauchampi, Potamocypris similis, P. unicaudata, P. arcuata, Limnocythere stationis, and L. inopinata) are reported from this city for the first time. The geographical distribution of some species is extended into the eastern parts of Turkey. Our results also suggest that species with …
Milk Composition And Yield Changes With Advancing Pregnancy In Dairy Buffaloes (Bubalus Bubalis), Sarzamin Khan, Muhammad Subhan Qureshi, Ifthiar Ahmed, Syed Mirajullah Shah
Milk Composition And Yield Changes With Advancing Pregnancy In Dairy Buffaloes (Bubalus Bubalis), Sarzamin Khan, Muhammad Subhan Qureshi, Ifthiar Ahmed, Syed Mirajullah Shah
Turkish Journal of Veterinary & Animal Sciences
The changes in the composition of milk with advancing pregnancy were investigated in Nili-Ravi dairy buffaloes. Forty lactating buffaloes were used, within 2-3 months postpartum. The animals were grouped as high, moderate, and low yielders; synchronized for estrus; and inseminated artificially. Milk yield was recorded daily and sampled fortnightly for analysis. The data were analyzed using the univariate weighted mean and general linear model. Decline in milk yield became significant after the 8th week post-conception. The high yielders had the lowest fat contents. Milk fat increased significantly during succeeding weeks post-conception. The highest fat level (8.5%) was observed in week …
In Vitro Maturation And Fertilization Of Buffalo Oocytes: The Effect Of Recovery And Maturation Methods, Abid Mehmood, Muhammad Anwar, Sayed Murtaza Hassan Andrabi, Muhammad Afzal, Syed Muhammad Saqlan Naqvi
In Vitro Maturation And Fertilization Of Buffalo Oocytes: The Effect Of Recovery And Maturation Methods, Abid Mehmood, Muhammad Anwar, Sayed Murtaza Hassan Andrabi, Muhammad Afzal, Syed Muhammad Saqlan Naqvi
Turkish Journal of Veterinary & Animal Sciences
Conditions for in vitro maturation (IVM) of primary oocytes without conventionally used fetal calf serum and hormones were optimized in order to reduce the cost of laboratory produced buffalo embryos. Comparisons were made between oocyte recovery methods (aspiration vs. slicing) and IVM in medium 199 (static culture method vs. flux culture method) supplemented with 4-5 × 106 granulosa cells mL-1 that contained either estrus buffalo serum (EBS) or fetal calf serum (FCS). Recovery methods were compared according to yield, i.e. cumulus oocyte complexes per ovary (COCs/ovary), the expansion rate (% of COCs that expanded), and nuclear maturation rate (% of …
Preliminary Bacterial Study On Subclinical Mastitis And Teat Condition In Dairy Herds Around Shiraz, Masoud Haghkhah, Mohammad Rahim Ahmadi, Hamid Reza Gheisari, Ali Kadivar
Preliminary Bacterial Study On Subclinical Mastitis And Teat Condition In Dairy Herds Around Shiraz, Masoud Haghkhah, Mohammad Rahim Ahmadi, Hamid Reza Gheisari, Ali Kadivar
Turkish Journal of Veterinary & Animal Sciences
Mastitis is a widely occurring and costly disease in the dairy industry. The aim of this study was to isolate bacterial causes of subclinical mastitis and investigate the relationship between subclinical mastitis and teat condition in dairy herds located around Shiraz, Fars province, Iran. From 7 commercial dairy herds around Shiraz 354 lactating cows were selected randomly. Subclinical mastitis was evaluated by the California Mastitis Test (CMT), electrical conductivity (EC), and somatic cell count (SCC). Teat condition was evaluated by measuring teat width and length. In the 68 samples of bacterial cultures identified, 14 different bacterial species were found. Staphylococcus …
Computational Comparison Of Β-Mannosidases Of Animals, Humans, Microbes, And Plants, Zahoor Qadir Samra, Muhammad Amin Athar
Computational Comparison Of Β-Mannosidases Of Animals, Humans, Microbes, And Plants, Zahoor Qadir Samra, Muhammad Amin Athar
Turkish Journal of Veterinary & Animal Sciences
The \beta-mannosidase (MANB) enzyme is involved in removing mannose residue from the nonreducing end, and its impaired activity leads to \beta-mannosidosis. MANB amino acid sequences of humans, other mammals, plants, fungi, and bacteria were compared to determine their similarities, differences, and predicted 3D structures. Our cloned MANB DNA sequence showed a 99% similarity to a previously reported human MANB DNA sequence but 16 nucleotide differences were observed, showing the polymorphic nature of the enzyme. The 9 changed codons coded the different amino acids Ile, Lys, Ile, Thr, Arg, Leu, Leu, Gly, and Asp, while 7 changed codons coded the same …
Repeat Breeder Syndrome In Dairy Cows: Influence Of Breed And Age On Its Prevalence And The Success Of A Hormone Therapy*, Robert Zobel, Suzana Tkalcic, Vlatka Buic, Ivana Pipal, Darko Geres, Marko Samardzija
Repeat Breeder Syndrome In Dairy Cows: Influence Of Breed And Age On Its Prevalence And The Success Of A Hormone Therapy*, Robert Zobel, Suzana Tkalcic, Vlatka Buic, Ivana Pipal, Darko Geres, Marko Samardzija
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to establish the prevalence of repeat breeder syndrome (RBS) in different breeds and reproductive ages of cattle in central Croatia and to assess the effectiveness of hormone therapy as a treatment option. A total of 1088 dairy cows were observed, 218 heifers and 870 multiparous cows. After the third unsuccessful artificial insemination (n = 164) and a thorough clinical and gynecological examination, the cows were tested for sexually transmitted diseases. An RBS diagnosis was based on failure to conceive, negative laboratory tests for sexually transmitted diseases, and the absence of other reproductive disorders. The …
The Effect Of Sex And Feed Supplementation With Organic Selenium And Vitamin E On The Growth Rate And Zoometrical Body Measurements Of Oat-Fattened White Kołuda® Geese*, Ewa Lukaszewicz, Artur Kowalczyk, Anna Jerysz
The Effect Of Sex And Feed Supplementation With Organic Selenium And Vitamin E On The Growth Rate And Zoometrical Body Measurements Of Oat-Fattened White Kołuda® Geese*, Ewa Lukaszewicz, Artur Kowalczyk, Anna Jerysz
Turkish Journal of Veterinary & Animal Sciences
This experiment was carried out on 200 White Koluda geese, 1 day old, randomly divided into 2 groups with 50 males and 50 females in each group. From the first day until week 13, birds from the control groups were fed basic feeds; in the experimental groups, feed was supplemented with 0.3 mg/kg of selenium and 100 mg/kg of vitamin E. Later on, all birds were fed for 1 week with 160 g of oat grain and 250 g of ground cereals per day, then with oat grain ad libitum. The body weight of each bird was measured individually on …
Serological Study Of Leptospirosis Among Dairy Cattle In Bosnia And Herzegovina, Maid Rifatbegovic, Zinka Maksimovic
Serological Study Of Leptospirosis Among Dairy Cattle In Bosnia And Herzegovina, Maid Rifatbegovic, Zinka Maksimovic
Turkish Journal of Veterinary & Animal Sciences
A total of 75,206 blood serum samples from dairy cattle and quarantined heifers was collected between 2001 and 2007 and analyzed for bovine leptospirosis by the microscopic agglutination test (MAT). Serovar Hardjo was used for testing of all sera, with the addition of 2 or 3 randomly chosen other serovars (Grippotyphosa, Icterohaemorrhagiae, Pomona, Bataviae, Canicola, and/or Saxcoebing). From the total number of sera tested, 1197 (1.59%) were serologically positive, with a decreasing tendency over the years of research. The most prevalent serovar was Pomona (1.32%), followed by Hardjo (0.52%) and Grippotyphosa (0.37%). The differences among the studied regions in terms …
Molecular And Serological Evidence For Anaplasma Infection In Yaks, Miling Ma, Zhijie Liu, Guiquan Guan, Youquan Li, Jianxun Luo, Hong Yin
Molecular And Serological Evidence For Anaplasma Infection In Yaks, Miling Ma, Zhijie Liu, Guiquan Guan, Youquan Li, Jianxun Luo, Hong Yin
Turkish Journal of Veterinary & Animal Sciences
Bovine anaplasmosis caused by Anaplasma marginale is considered to be an important disease in China; large-scale investigations have not been carried out since the 1990s, however, and whether or not yaks can be infected by A. marginale has never been investigated. In this study, 2 yaks were successfully infected by the inoculation of blood infected with A. marginale under experimental conditions. Furthermore, an investigation of 482 field serum samples from yaks using an enzyme-linked immunosorbent assay (ELISA) with the recombinant major surface protein 5 (MSP5) showed that 84.4% of the results were positive. In consideration of previously determined ecological and …
Congenital Cardiac Defect In A Pygmy Goat (Capra Hircus), Fulvio Laus, Ilenia Copponi, Matteo Cerquetella, Alessandro Fruganti
Congenital Cardiac Defect In A Pygmy Goat (Capra Hircus), Fulvio Laus, Ilenia Copponi, Matteo Cerquetella, Alessandro Fruganti
Turkish Journal of Veterinary & Animal Sciences
Congenital cardiac defects are anatomic conditions present at birth. Few references to such conditions in goats are available in the current scientific literature. This report describes, for the first time, a congenital cardiac disease clinically characterized by polypnea from birth and exercise intolerance in a 2-month-old pygmy goat. An atrioventricular dysplasia known as Ebstein's anomaly, an atrial septal defect, and a mild subaortic stenosis were ultrasonographically diagnosed.
Influence Of Pgf_{2\Alpha} On Semen Quality And Libido In Holstein Bulls, Reza Masoumi, Armin Towhidi, Ardsher N. Javaremi, Habib Nabizadeh, Mehdi Zhandi
Influence Of Pgf_{2\Alpha} On Semen Quality And Libido In Holstein Bulls, Reza Masoumi, Armin Towhidi, Ardsher N. Javaremi, Habib Nabizadeh, Mehdi Zhandi
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to determine the effects of Cloprostenol (PGF_{2\alpha} analogue) on semen quality and libido in Holstein bulls. Ten low libido Iranian Holstein bulls were randomly allocated to 2 groups and received Cloprostenol (n = 5) or saline (n = 5) 30 min prior to the semen collection 2 days per week for 2 months. Reaction time was significantly decreased in the treatment group. Duration of ejaculation was significantly increased in the treatment group. Semen volume and sperm concentration were higher in treated bulls when compared with controls. The percentage of morphologically normal sperm cells, percentage …
Aflatoxin M1 Levels In Retail Yoghurt And Ayran In Erzurum In Turkey, Meryem Aydemi̇r Atasever, Mustafa Atasever, Korhan Özturan
Aflatoxin M1 Levels In Retail Yoghurt And Ayran In Erzurum In Turkey, Meryem Aydemi̇r Atasever, Mustafa Atasever, Korhan Özturan
Turkish Journal of Veterinary & Animal Sciences
This study was carried out to determine the presence and levels of aflatoxin M1 (AFM1) in yoghurt and ayran consumed in the province of Erzurum, Turkey. For this purpose, a total of 80 yoghurt samples and 80 ayran samples were randomly obtained from markets. The samples' AFM1 content and concentrations were examined by competitive ELISA method. AFM1 at detectable level (5 ng/kg) was found in 87.5% of the yoghurt samples and in 90.0% of the ayran samples. AFM1 levels in 16 (20%) yoghurt and in 11 (13.6%) ayran samples exceeded the maximum tolerable limit of the Turkish Food Codex. The …
The Effect Of Ovine Placenta Extract, On Mammogenesis, Lactogenesis And Galactopoiesis In Sheep, Gabriel Cotor, Aneta Pop, Marian Ghita
The Effect Of Ovine Placenta Extract, On Mammogenesis, Lactogenesis And Galactopoiesis In Sheep, Gabriel Cotor, Aneta Pop, Marian Ghita
Turkish Journal of Veterinary & Animal Sciences
The aim of the present study was to evaluate the effect of ovine placenta extract, obtained by affinity chromatography on immobilized wheat germ lectin, on mammogenesis, lactogenesis, and galactopoiesis in pregnant and lactating sheep. Placental extract (100 \mug/mL protein concentration) was subcutaneously injected to pregnant sheep in days 1, 4, 7, 10, and 13 of the experiment (totally 10 mL placenta extract/animal) alternatively on the right and left side of the neck. Placental extract induced a more intense development of udder parameters; udder circumference increase was of 16.73%, anteroposterior length increase was of 15.9%, and latero-lateral length of 11.1%. Placental …
Haematological And Biochemical Values Of The Blood Of Pheasants (Phasianus Colchicus) Of Different Ages, Tufan Keçeci̇, Ramazan Çöl
Haematological And Biochemical Values Of The Blood Of Pheasants (Phasianus Colchicus) Of Different Ages, Tufan Keçeci̇, Ramazan Çöl
Turkish Journal of Veterinary & Animal Sciences
This study was conducted to determine selected haematological and biochemical parameters of pheasants (Phasianus colchicus) bred in Konya city in Turkey. Forty-five healthy pheasants of different ages (1, 5, and 12 months old) were examined. In the blood samples taken from these animals, haematological and biochemical values were determined. Comparing the haematological and biochemical parameters among the age groups, red blood cell counts, haemoglobin amount, haematocrit values, lymphocyte percentage, and total protein and albumin levels increased with the advancement of age. However, glucose, length and width of erythrocyte, length and width of erythrocyte nucleus, and percentages of monocyte and basophile …
Monitoring Of Somatic Cell Count Variations During Lactation In Primiparous And Multiparous Turkish Saanen Goats (Capra Hircus), Abdülkadi̇r Orman, Ayteki̇n Günay, Faruk Balci, Mehmet Koyuncu
Monitoring Of Somatic Cell Count Variations During Lactation In Primiparous And Multiparous Turkish Saanen Goats (Capra Hircus), Abdülkadi̇r Orman, Ayteki̇n Günay, Faruk Balci, Mehmet Koyuncu
Turkish Journal of Veterinary & Animal Sciences
In this study, a total of 28 Saanen does were used to evaluate the relationship between somatic cell count (SCC) and milk yield. The study included 14 first-lactation (primiparous) does and 14 does in second lactation or greater (multiparous). Individual milk samples from both morning and evening milkings were taken every 15 days throughout the lactation period of 7 months. While somatic cell counts were higher during the evening milking (840.40 versus 532.30 cells mL-1; 1050.40 versus 759.70 cells mL-1), milk yields were lower during the evening milking (115.40 versus 193.80 kg; 177.40 versus 280.00 kg) for both primiparous and …
Comparative Ultrasonographic Study Of The Prostate Complex And Bulbourethral Glands Of The Domestic Rabbit (Oryctolagus Cuniculus), Rosen Dimitrov, Kamelia Stamatova
Comparative Ultrasonographic Study Of The Prostate Complex And Bulbourethral Glands Of The Domestic Rabbit (Oryctolagus Cuniculus), Rosen Dimitrov, Kamelia Stamatova
Turkish Journal of Veterinary & Animal Sciences
The aim of the present study was to provide a comparative description of the rabbit prostate complex and bulbourethral glands by means of ultrasonography, in order to obtain results that may be useful for the diagnosis of reproductive pathology in this species. The prostate and bulbourethral glands were studied sonographically in 12 sexually mature, clinically healthy male New Zealand rabbits that were 12 months old and weighed 2.8 to 3.2 kg. The prostate complex, composed of proprostate, prostate, and paraprostate parts, was observed using prepubic ultrasonography in sagittal and transversal planes and presented a hyperechoic stroma. The bulbourethral glands were …
Synthesis And Antiinflammatory Activity Of Novel 2,5-Disubstituted Thiophene Derivatives, Sahar Badr
Synthesis And Antiinflammatory Activity Of Novel 2,5-Disubstituted Thiophene Derivatives, Sahar Badr
Turkish Journal of Chemistry
New series of 2,5-disubstituted thiophenes were synthesized. Thiosemicarbazones 1a-b were reacted with various reagents, such as diethyl-2-bromomalonate, ethyl-2-chloroacetoacetate, thioglycolic acid, 4-substituted phenacyl bromides, and acetic anhydride, to afford heterocyclic substituted thiophene derivatives 2a-b, 3a-b, 4a-b, 5a-b, 6a-b, and 7a-b, respectively. Moreover, cyclization of the key intermediate 1b with chloroacetic acid yielded thiazolidine 9, which on reaction with appropriate aromatic aldehydes afforded the corresponding arylidene derivatives 10a-f. Finally, reaction of N^\-arylidene cyanoacetohydrazide 11 with sulfur and phenylisothiocyanate yielded thiazoline derivative 12, which on treatment with triethylorthoformate and acetic anhydride afforded thiazolo[4,5-d]pyrimidinone derivative 13. Some of the newly synthesized compounds showed promising …
Simultaneous Determination Of Trace Sn(Ii) And Sn(Iv) Using Differential Pulse Polarography And Application, Güler Somer, Ülkü Ünal
Simultaneous Determination Of Trace Sn(Ii) And Sn(Iv) Using Differential Pulse Polarography And Application, Güler Somer, Ülkü Ünal
Turkish Journal of Chemistry
A new method was established for the simultaneous determination of Sn(II) and Sn(IV) using differential pulse polarography (DPP). Among several electrolytes, 0.1 M NaOH in the presence of 0.1 M KNO_3 was found to be the most suitable one. In this medium, Sn(II) had 2 peaks, at -0.74 and -1.17 V, which were sharp and very sensitive. Sn(IV), on the other hand, had a very small peak at -0.92 V when its concentration was higher than 4.0 \times 10^{-4} M. Thus, it was decided to determine Sn(IV) after reduction into Sn(II). In the presence of both Sn(II) and Sn(IV), Sn(II) …
Synthesis And Evaluation Of The Analgesic Activity Of Some New Isoxazolo[4,5-D]Pyridazin-4(5h)-One Derivatives, Oya Ünsal Tan, Keri̇man Özadali, Özgür Yeşi̇lyurt, Hakan Kayir, İsmai̇l Tayfun Uzbay, Ayla Balkan
Synthesis And Evaluation Of The Analgesic Activity Of Some New Isoxazolo[4,5-D]Pyridazin-4(5h)-One Derivatives, Oya Ünsal Tan, Keri̇man Özadali, Özgür Yeşi̇lyurt, Hakan Kayir, İsmai̇l Tayfun Uzbay, Ayla Balkan
Turkish Journal of Chemistry
Some isoxazolo[4,5-d]pyridazin4(5H)-one derivatives were synthesized and tested for their analgesic activity. The analgesic activities of the compounds were determined by hot-plate and acetic acid writhing tests using morphine and diclofenac as references. Compounds 4a, 4f, 4g, and 4i (25 mg/kg) showed analgesic profiles similar to that of morphine (5 mg/kg).
Polarographic Determination Of Anticancer Drug Vitamin K_3 With Direct And Indirect Methods/Application To Serum And K_3 Injection Solution, Ümmi̇han Taşkoparan Yilmaz, Güler Somer
Polarographic Determination Of Anticancer Drug Vitamin K_3 With Direct And Indirect Methods/Application To Serum And K_3 Injection Solution, Ümmi̇han Taşkoparan Yilmaz, Güler Somer
Turkish Journal of Chemistry
In this work, direct and indirect methods for determination of vitamin K_3 were developed using differential pulse polarography. The reaction between sulfite and the quinone (Q) form of vitamin K_3 was used for indirect determination, since the sulfite peak at -0.7 V is sharp and very reproducible in 0.1 M HAc NaAc (pH = 5.5). It was found that at pH 4.5-5.5, this reaction was quantitative and very fast when the temperature was 45 °C. For its direct determination, on the other hand, vitamin K_3 was standardized by the indirect method using standard sulfite as the reducing agent. The calibration …
Stable Ester And Amide Conjugates Of Some Nsaids As Analgesic And Antiinflammatory Compounds With Improved Biological Activity, Meci̇t Orhan Uludağ, Burcu Çalişkan Ergün, Duygu Asli Alkan, Ni̇lüfer Ercan, Güler Yağmur Özkan, Erden Banoğlu
Stable Ester And Amide Conjugates Of Some Nsaids As Analgesic And Antiinflammatory Compounds With Improved Biological Activity, Meci̇t Orhan Uludağ, Burcu Çalişkan Ergün, Duygu Asli Alkan, Ni̇lüfer Ercan, Güler Yağmur Özkan, Erden Banoğlu
Turkish Journal of Chemistry
A set of ester and amide derivatives of some acidic NSAIDs, including ibuprofen, ketoprofen, and mefenamic acid (1-3), were synthesized and evaluated for their in vivo analgesic and antiinflammatory activity using the p-benzoquinone-induced writhing test and the carrageenan-induced paw edema model, respectively. Among the synthesized compounds, ester derivatives of ketoprofen showed especially potent analgesic and antiinflammatory activity as compared to the parent drug. In vitro chemical stability studies revealed that ester and amide derivatives were chemically stable in simulated gastric (pH 1.2) and intestinal fluids (pH 6.8). In 80\% human plasma, the ester derivatives were found to be relatively stable …
Constituents Of Plantago Major Subsp. Intermedia With Antioxidant And Anticholinesterase Capacities, Ufuk Kolak, Mehmet Boğa, Emi̇ne Akalin Uruşak, Ayhan Ulubelen
Constituents Of Plantago Major Subsp. Intermedia With Antioxidant And Anticholinesterase Capacities, Ufuk Kolak, Mehmet Boğa, Emi̇ne Akalin Uruşak, Ayhan Ulubelen
Turkish Journal of Chemistry
The methanol extract of Plantago major subsp. intermedia (Gilib.) Lange afforded 4 known compounds, namely isomartynoside (1), 10-hydroxymajoroside (2), \beta -sitosterol (3), and ursolic acid (4). Their structures were established by spectroscopic methods. After determination of the total phenolic and flavonoid contents of the methanol extract, the antioxidant potentials of the crude extract and isolated compounds 1-4 were determined by \beta -carotene bleaching, DPPH free radical and ABTS cation radical scavenging, and cupric reducing antioxidant capacity methods. The methanol extract, rich in phenolic contents, indicated the same DPPH free radical scavenging activity (72\% inhibition) as a standard compound, butylated hydroxytoluene, …
Solidified Floating Organic Drop Microextraction And Spectrophotometric Determination Of Vanadium In Water Samples, Shayessteh Dadfarnia, Ali Mohammad Haji Shabani, Akram Mirshamsi
Solidified Floating Organic Drop Microextraction And Spectrophotometric Determination Of Vanadium In Water Samples, Shayessteh Dadfarnia, Ali Mohammad Haji Shabani, Akram Mirshamsi
Turkish Journal of Chemistry
Solidified floating organic drop microextraction (SFODME) was used as a sample preparation method prior to spectrophotometric determination of trace amounts of vanadium in water samples. 8-Hydroxyquinoline (oxine) was used as the chelating agent. The main parameters affecting the performance of SFODME, such as pH, concentration of oxine, extraction time, sample and organic phase volume, extraction temperature, and the nature of the organic solvent, were optimized. Under the optimized conditions, an enhancement factor of 38, detection limit of 0.97 \mu g L^{-1}, and good relative standard deviation of \pm 3.9% at 10 \mu g L^{-1} were obtained. The method was successfully …