Simple Method for Determining Trace Pesticides in Air Using Extraction Disks

• Published in: Analytical Sciences Vol. 16; no. 3; pp. 257 - 263
• Main Authors: MORIYAMA, Noboru, MITOBE, Hideko, MURAYAMA, Hitoshi, MUKAI, Hiroyuki
• Format: Journal Article
• Language: English
• Published: Tokyo The Japan Society for Analytical Chemistry 2000; Japan Society for Analytical Chemistry; Nature Publishing Group
• Subjects: Analysis methods; Analytical chemistry; Applied sciences; Atmospheric pollution; Chemistry; Chromatographic methods and physical methods associated with chromatography; Exact sciences and technology; Flow rates; Gas chromatographic methods; Pesticides; Pollution; Quartz; Trace analysis; Solid phase extraction; Chemical analysis; Coupled method; Polymer fibers; Pesticides; Ultrasonic treatment; Air; Environmental control; Chemical enrichment; Gas solid adsorption; Gas chromatography; Multicomponent analysis; Quartz fiber; Air pollution; Mass spectrometry
• ISSN: 0910-6340; 1348-2246
• DOI: 10.2116/analsci.16.257

A conventional method for the quantitative and simultaneous analysis of a large number of pesticides was proposed using a combination of commercial extraction disks and a quartz-fiber disk. Pesticides contained in air were collected on these disks at a flow rate of 10 l min-1 and extracted by acetone. The extracted solution was analyzed quantitatively with GC/MS. In order to evaluate the accuracy of this method, a recovery test was performed. Forty-five kinds of pesticides were spiked on the quartz-fiber disk at a concentration level of 0.2 μg by collecting 10 m3 of clean air. The recovery efficiencies of almost 40 kinds of pesticides showed more than 80%, and the coefficients of variations were less than 20%. The method was applied to a practical environmental analysis of pesticides, and an appropriate result could be obtained.