【求助】二硫代氨基甲酸酯类农残可以用GC-MS检测吗?

应助达人

我用气相的顶空做过，效果还行。气质法没有做过。

这种农药气相很不好做

您好,您用气相做用的是什么检测器?响应值高吗?谢谢!

应助达人

以二硫化碳或是滴定法做的,检测限都比较高,满足不了0.01的要求的.代森锰锌,福美双都要用单独法做前处理吧.

除了用气相，那还能用什么方法来做？滴定法或分光光度计法？

2.2 For Mancozeb in Water
An 8 mL portion of sample was placed into a 40 mL vial along with 10% EDTA, and 3% nCl2/8N HCl solution and capped. The samples were placed in a heating block at 100℃for four hours with shaking at various time intervals. The samples were then analyzed by GC/MSD
using SIM.

附件

福美双（thiram）可以用液相方法做：
Determination of tetramethylthiuram disulfide (Thiram) in river water by high-performance liquid chromatography: Micellar versus conventional reversed phase chromatography
Summary：
After a comparative study of conventional reversed phase and micellar liquid chromatography a method is described for the determination of the fungicide thiram in river water based on the use of micelles of CTAB. The method involves the extraction/concentration of thiram with a C18 cartridge followed by separation on a C18 reversed-phase column with a mobile phase of 20% (v/v) acetonitrile/0.01 M CTAB in phosphate buffer (pH-6.3), and detection at 254 nm. The method allows the determination of thiram in the presence of other water-soluble dithiocarbamate fungicides (nabam, ziram and ferbam) with a limit of detection of 36 pg mL–1 for a typical 20-fold preconcentration.

全文：
附件

谢谢各位,谢谢hotdoglet!!

福美双一般用液相做