【求助】有用过GCMS检测百菌清的吗?

有机氯有这个现象，可以用基质匹配做一下

样本是什么？我们这里的百菌清回收不是很高啊

楼主，这里有两篇参考文献您可以看看：
GC_MS法确证蔬菜中百菌清等多种农药残留
固相萃取_[url=https://insevent.instrument.com.cn/t/bp]气质联用法测定水中三氯杀螨醇及百菌清[/url]

应助达人

基底是毛豆.谢谢!

我也有做毛豆的百菌清，不过感觉回收率有时候不是很好啊，百菌清好像比较容易分解

这可能是气质连用的基质效应所制.可以试一下基质标准做,就是将标准品用样品基质配制,

应助达人

是,我们现在按基质效应做,还行,回收比以前好些了.

Determination and degradation study of chlorothalonil residues in cucumbers, peppers and cherry tomatoes
VALVERDE-GARCIA A,etal.,
Analytica chimica acta,1993, vol. 276, no1, pp. 15-23 (18 ref.)
Abstract:
Residue levels and degradation rates of chlorothalonil in cucumbers, peppers and cherry tomatoes grown in commercial greenhouses (Almeria, Spain) were studied. Chlorothalonil residues were extracted by the Mills method, analysed by gas chromatography with electron-capture detection and confirmed by gas chromatography-mass spectrometry. The recoveries of chlorothalonil were determined at three different fortification levels, the average values being greater than 80%. The limit of quantification was 0.01 mg kg-1 for all vegetables

各位大虾，我也做百菌清，基本都没有回收到，标样正常，响应很高。是不是前处理真的分解了？怎么那么彻底一点没有了？