Selective detection of underivatized 2,4-dichlorophenoxyacetic acid in soil by supercritical fluid chromatography with ion mobility detection.
Selective detection of underivatized 2,4-dichlorophenoxyacetic acid in soil by supercritical fluid chromatography with ion mobility detection.
复制标题
通过超临界流体色谱和离子淌度检测选择性检测土壤中的未衍生化 2,4-二氯苯氧基乙酸。
DOI：
10.1093/chromsci/27.9.529
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发表时间：
1989
影响因子：
1.3
通讯作者：
HillJr,HH
中科院分区：
文献类型：
--
作者：
Morrissey,MA;HillJr,HH
开发了测定土壤中 2,4-二氯苯氧基乙酸 (2,4-D) 的简化程序。土壤样品在提取后通过超临界流体色谱分离，无需衍生化，也无需使用柱色谱进行净化。通过使用可调选择性离子淌度检测器消除了色谱分离中的干扰。选择性监测由游离酸形成的大气压离子，以便检测器可以在其他电子捕获化合物存在的情况下监测 2,4-D。对于随机选择的土壤样本，检测到的 2,4-D 水平估计为 500 ppb。
A simplified procedure was developed for the determination of 2,4-dichlorophenoxyacetic acid (2,4-D) in soils. Soil samples were separated by supercritical fluid chromatography after extraction without derivatization and without the use of column chromatography for cleanup. Interferences in the chromatographic separation were eliminated by using a tunably selective ion mobility detector. An atmospheric pressure ion formed b y the free acid was selectively monitored s o the detector could monitor 2,4-D in the presence of other electron-capturing compounds. For a randomly chosen soil sample, the level of 2,4-D detected was estimated at 500 ppb.