Agricultural product quality safety and standards institute, Jiangxi academy of agricultural sciences, Nanchang, P. R. China.
Institute of Agricultural Quality Standards and Testing, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa, P. R. China.
J Sep Sci. 2020 Mar;43(5):905-911. doi: 10.1002/jssc.201900871. Epub 2019 Dec 20.
Surfactant cetyltrimethylammonium bromide enhanced molybdenum disulfide was used as an adsorbent in pipette-tip solid-phase extraction for the pretreatment of sulfonamides in environmental water samples. The factors affecting the extraction recoveries of the analytes, including the sample pH value, amount of sorbent, type and volume of eluent solution, and salt concentration were optimized. This pipette-tip solid-phase extraction method demonstrated good linearity (0.05-10.0 µg/L) with a coefficient of determination of 0.9984-0.9996, limit of detection (0.2-0.4 ng/L) and limit of quantitation (0.5-1.0 ng/L), good analyte recoveries (76-91), and acceptable limit of quantitation (<10%) under the optimized conditions. These results indicated that the proposed method was a good tool for monitoring sulfonamides in environmental water samples.
表面活性剂十六烷基三甲基溴化铵增强的二硫化钼被用作环境水样中磺胺类药物的固相萃取前处理的吸附剂。优化了影响分析物萃取回收率的因素，包括样品 pH 值、吸附剂用量、洗脱液类型和体积以及盐浓度。该微量固相萃取方法在优化条件下表现出良好的线性（0.05-10.0 µg/L），决定系数为 0.9984-0.9996，检出限（0.2-0.4 ng/L）和定量限（0.5-1.0 ng/L），分析物回收率良好（76-91%），在优化条件下定量限（<10%）可接受。这些结果表明，该方法是监测环境水样中磺胺类药物的一种很好的工具。
