摘要
对辛硫磷和氯氰菊酯的复配农药——２０％辛氯乳油进行了气相色谱定量分析的研究。以甲基对硫磷为内标，使用大口径毛细管柱，采用快速程序升温、高载气流速等手段，解决了辛硫磷高温易分解与氯氰菊酯色谱流出温度高的矛盾。在相同的色谱条件下对二者进行定量分析，变异系数分别为０．６７％和１．０％。方法简便、快速、准确。
A compound pesticide, 20% P C emulsion, consisting of 18.5% phoxim and 1.5% cypermethrin pesticides and other accessory agents is especially effective in controlling and killing boll worms. For its quality control some difficulties were encountered. In this paper we propose a simple and practical method for GC analysis of the product by use of a short wide bore capillary column(HP 1, 5m×0 53mm×2 65μm), high carrier gas flow rate and high speed temperature programming etc.. Content analysis of efficient composition of “20% P C emulsion” was completed under the chromatographic conditions using methyl parathion as an internal standard. Coefficient of variation of phoxim and cypermethrin were 0.67% and 1.0% respectively.
出处
《色谱》
CAS
CSCD
北大核心
1997年第3期252-253,共2页
Chinese Journal of Chromatography
