Multiresidue analysis of nitrogen-containing and sulfur-containing pesticides in agricultural products using dual-column GC-NPD/FPD

被引：16

作者：

Ueno, E ^{[1
]}

Oshima, H ^{[1
]}

Saito, I ^{[1
]}

Matsumoto, H ^{[1
]}

机构：

[1] Aichi Prefectural Inst Publ Hlth, Kita Ku, Nagoya, Aichi 4628576, Japan

来源：

JOURNAL OF THE FOOD HYGIENIC SOCIETY OF JAPAN | 2002年 / 43卷 / 02期

关键词：

agricultural product; nitrogen-containing pesticide; sulfur-containing pesticide; multiresidue analysis; dual-column; dual-detector; (NPD; FPD); GC-NPD/FPD;

D O I：

10.3358/shokueishi.43.80

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

We investigated simultaneous analytical methods for pesticide residues in large numbers of agricultural products samples. Extraction of each sample with acetonitrile was followed by a salting-out step using a graduated cylinder. The test solution was cleaned up with gel permeation chromatography (GPC), which separated the pesticide eluate into 2 fractions, and then with a tandem mini-column. Analysis was done with a dual-column GC equipped with a dual NPD and FPD (S mode) detector. Use of the Siltek(TM)-deactivated liner, guard column, and Y connector, and Silcosteel(R)-treated NPD jet was effective for preventing the breakdown of sulfur-containing pesticides. Recoveries of 87 nitrogen-containing and sulfur-containing pesticides from fortified spinach, tomato, apple, strawberry and brown rice, ranged from 71 to 127% with RSD values of 1similar to24%, except for recoveries of aldicarb, amitraz, ethiofencarb, imazalil, propamocarb and triflumizole. Detection limits of pesticides were very good (0.3similar to5 ppb (NPD) and 2similar to20 ppb (FPD)) for routine analysis of pesticide residues in foods. Surveillance of pesticides in agricultural products was carried out by using the present method. From 22 out of 33 samples, 21 pesticides (43 in total) were detected. The results indicated that the present method can be applied as an efficient and reliable means for monitoring pesticide residues in agricultural products.

引用

页码：80 / 89

页数：10

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