【求助】Nitenpyram烯啶虫胺的前处理方法

这个农药的检测方法好像很少的，只找到了一篇英文的摘要，好像全文是日语的：
Determination of neonicotinoid pesticide nitenpyram and its metabolites in agricultural products.

An HPLC method for detecting nitenpyram (a pesticide) and its metabolites (CPMA and CPMF) in agricultural products was examined. The technique involved acetone extraction followed by re-extraction using an Extrelut® column and purification by silica gel column chromatography. Due to the instability of CPMA and CPMF they were derived to a more stable compound (CPF) prior to re-extraction. HPLC and GC-FTD were used to determine nitenpyram and CPF, respectively, in agricultural products (apple, cucumber, grapes, Japanese radish, potato, tomato, brown rice, tea) spiked with nitenpyram and metabolites. Recoveries were 66–85 and 64–120% for nitenpyram and metabolites, respectively, with the exception of CPMA in tea (27.9% in leaves and 37.0% in powder). Detection limits were 0.0025–0.01 and 0.025–0.1 p.p.m. for nitenpyram and metabolites, respectively.

http://www.fstadirect.com/GetRecord.aspx?AN=1998-10-Cf1253

应助达人

这种农药国内有生产，烟碱类的新型农药。

这篇文献中有一些相关的提取方法，是多残留分析的，用乙酸乙酯和乙腈提取，SPE净化，ECD测定的：

附件

High-throughput determination of pesticide residues in food commodities by use of ultra-performance liquid chromatography–tandem mass spectrometry
A. Garrido Frenich，et al.;
Analytical and Bioanalytical Chemistry; Volume 390, Number 3/2008: 947-959

http://www.springerlink.com/content/4l610187p352161r/

这篇文章不能下载全文了，好像里面多残留检测中也有Nitenpyram的。

Determination of various insecticides and pharmaceuticals using differently modified glassy carbon electrodes

日本的这个东西的方法挺不好做的，CPMA和CPMF非常不稳定，实验要把这两个反应成CPF，操作速度要很快。nitenpyram本体倒挺容易的。有中文版的日本通知法可以下载，看看就知道了。