生物材料中敌敌畏、氧乐果的气质联用快速定性分析

Rapid Qualitative Analysis on Dichlorvos and Omethoate in Biomaterials by Gas Chromatography-Mass Spectrometry

摘要:
目的建立胃液和血液中敌敌畏、氧乐果的快速定性测定方法。

方法胃液和血液中的敌敌畏、氧乐果经二氯甲烷萃取,冷氮吹干后,残留物用二氯甲烷溶解,再用气质联用仪进行定性分析。主要描述样品的前处理过程、气质条件等内容。

结果生物材料中的敌敌畏、氧乐果可以在60 min 内完成检测,得到的总离子流图和质谱图通过与标准质谱图的比对得到准确可靠的定性分析结果。

结论该方法能快速准确地定性分析胃液和血液中的敌敌畏、氧乐果成分。

Abstract:
Objective To establish a rapid qualitative method for detecting dichlorvos and omethoate in biomaterials.

Methods Dichlorvos and omethoate in gastric juice and blood samples were extracted by dichloromethane and evaporated using nitrogen stream. The residues were dissolved with dichloromethane and detected by gas chromatography-mass spectrometry (GC/MS). Indicators of sample pre-treatments and GC/MS conditions were described.

Results The detection of dichlorvos and omethoate in biomaterials could be finished in 60 min. A qualitative conclusion was drawn by comparing the total ion chromatograms and the mass spectrums of the samples with the standard mass spectra.

Conclusion The method can rapidly and accurately identify dichlorvos and omethoate in gastric juice and blood samples.