| 标题 |
  Ultratrace-level determination of glyphosate, aminomethylphosphonic acid and glufosinate in natural waters by solid-phase extraction followed by liquid chromatography–tandem mass spectrometry: performance tuning of derivatization, enrichment and detection 固相萃取-液相色谱-串联质谱法超痕量测定天然水中草甘膦、氨甲基膦酸和草铵膦：衍生、富集和检测的性能调整
相关领域
氨基甲基膦酸
化学
色谱法
固相萃取
衍生化
萃取（化学）
质谱法
样品制备
液相色谱-质谱法
检出限
串联质谱法
草铵膦
草甘膦
同位素稀释
代谢物
生物化学
农学
生物
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| 其它 | A sensitive and robust analytical method for the quantification of glyphosate, aminomethylphosphonic acid (AMPA) and glufosinate in natural water has been developed on the basis of a derivatization with 9-fluorenylmethylchloroformate (FMOC-Cl), solid-phase extraction (SPE) and liquid chromatography followed by electrospray tandem mass spectrometry (LC-ESI-MS/MS). In order to maximize sensitivity, the derivatization was optimized regarding organic solvent content, amount of FMOC-Cl and reaction time. At an acetonitrile content of 10% a derivatization yield of 100% was reached within two hours in groundwater and surface water samples. After a twofold dilution the low acetonitrile content allowed solid-phase extraction of a sample of originally 80 mL over 200 mg Strata-X cartridges. In o |
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