Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum" University of Murcia, E-30100 Murcia, Spain.
Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum" University of Murcia, E-30100 Murcia, Spain.
J Chromatogr A. 2018 Jul 20;1559:95-101. doi: 10.1016/j.chroma.2017.12.059. Epub 2017 Dec 23.
Nine organophosphorus pesticides (OPPs) were determined in environmental waters from different origins using in situ ionic liquid dispersive liquid microextraction (IL-DLLME). This preconcentration technique was coupled to gas chromatography-mass spectrometry (GC-MS) using microvial insert thermal desorption, an approach that uses a thermal desorption injector as sample introduction system. The parameters affecting both the microextraction and sample injection steps were optimized. The proposed method showed good precision, with RSD values ranging from 4.1 to 9.7%, accuracy with recoveries in the 85-118% range, and sensitivity with DLs ranging from 5 to 16 ng L.
采用离子液体分散液液微萃取（IL-DLLME）技术，对不同来源的环境水样中的 9 种有机磷农药（OPPs）进行了测定。该浓缩技术与微试管插入式热解吸气相色谱-质谱联用（GC-MS）联用，采用热解吸进样器作为样品进样系统。对影响微萃取和进样步骤的参数进行了优化。该方法具有良好的精密度，相对标准偏差（RSD）在 4.1%至 9.7%之间，回收率在 85%至 118%之间，检测限（DLs）在 5 至 16ng·L之间。
