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Full-Text Articles in Life Sciences
Rapid Identification Of Nicotine In Electronic Cigarette Liquids Based On Surface-Enhanced Raman Scattering, Jun-Yi Chien, Yong-Chun Gu, Hsin-Mei Tsai, Chun-Hao Liu, Chia-Yuan Yen, Yuh-Lin Wang, Juen-Kai Wang, Chi-Hung Lin
Rapid Identification Of Nicotine In Electronic Cigarette Liquids Based On Surface-Enhanced Raman Scattering, Jun-Yi Chien, Yong-Chun Gu, Hsin-Mei Tsai, Chun-Hao Liu, Chia-Yuan Yen, Yuh-Lin Wang, Juen-Kai Wang, Chi-Hung Lin
Journal of Food and Drug Analysis
Nicotine-containing electronic cigarette liquid (e-liquid) is prohibited in many countries, creating requirements for rapid detection approaches for on-site inspection or screening for large amounts of samples. Here, we demonstrate a simple way to identify nicotine using surface-enhanced Raman scattering (SERS) with substrates made of silver nanoparticle arrays imbedded in anodic aluminum oxide nanochannels (Ag/AAO). Compared with the reported colloidal nanoparticle-based SERS, that required serial dilutions to enable colloid aggregation in the viscous e-liquid, a small amount of undiluted e-liquid sample can be directly added onto our solid-phase Ag/AAO substrate without any pre-treatment. The sensitivity of our SERS measurements is 2e3 …
Screening For Malachite Green Contamination On Live Fish Skin With Chewing Gum Based Viscoelastic Sers Sensor, Wan-Li Fan, Shi-Wei Yang, Dong-Mei Wang, Zheng-Jun Gong, Mei-Kun Fan
Screening For Malachite Green Contamination On Live Fish Skin With Chewing Gum Based Viscoelastic Sers Sensor, Wan-Li Fan, Shi-Wei Yang, Dong-Mei Wang, Zheng-Jun Gong, Mei-Kun Fan
Journal of Food and Drug Analysis
Malachite green (MG), a prohibited but still found antimicrobial in aquafarm and during live fish shipping, is a hot target in food safety screening. Herein, a novel chewing gum based flexible SERS (G-SERS) sensor was proposed for rapid sampling and detection of MG on live fish skin. The whole analysis takesmin, while the limit of detection for MG is 0.73 pg. Different from other reports, MG contaminated live fish was monitored daily with the G-SERS sensor, during which the fish was firstly raised in 0.5 ppm MG solution for one day, followed by freshwater for a week. It was found …