Direct Surface Analysis of Pesticides on Soil, Leaves, Grass, and Stainless Steel by Static Secondary Ion Mass Spectrometry

Direct surface analyses by static secondary ion mass spectrometry (SIMS) were performed for the following pesticides adsorbed on dandelion leaves, grass, soil, and stainless steel samples:  alachlor, atrazine, captan, carbofuran, chlorpyrifos, chlorsulfuron, chlorthal-dimethyl, cypermethrin, 2,4-D,...

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Bibliographic Details
Published in:Environmental science & technology 1997-02, Vol.31 (2), p.402-408
Main Authors: Ingram, Jani C, Groenewold, Gary S, Appelhans, Anthony D, Delmore, James E, Olson, John E, Miller, David L
Format: Article
Language:English
Subjects:
ACERO
ACIER
Applied sciences
Chemistry
ESPECTROMETRIA DE MASAS
Exact sciences and technology
FEUILLE
Global environmental pollution
GRAMINEAS
GRAMINEE
GRASSES
HOJAS
Ions
LEAVES
MASS SPECTROMETRY
PESTICIDE
PESTICIDES
PLAGUICIDAS
Pollution
Scientific imaging
SOIL
SOL
SPECTROMETRIE DE MASSE
STEEL
SUELO
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Summary:Direct surface analyses by static secondary ion mass spectrometry (SIMS) were performed for the following pesticides adsorbed on dandelion leaves, grass, soil, and stainless steel samples:  alachlor, atrazine, captan, carbofuran, chlorpyrifos, chlorsulfuron, chlorthal-dimethyl, cypermethrin, 2,4-D, diuron, glyphosate, malathion, methomyl, methyl arsonic acid, mocap, norflurazon, oxyfluorfen, paraquat, temik, and trifluralin. The purpose of this study was to evaluate static SIMS as a tool for pesticide analysis, principally for use in screening samples for pesticides. The advantage of direct surface analysis compared with conventional pesticide analysis methods is the elimination of sample pretreatment including extraction, which streamlines the analysis substantially; total analysis time for SIMS analysis was ca. 10 min/sample. Detection of 16 of the 20 pesticides on all four substrates was achieved. Of the remaining four pesticides, only one (trifluralin) was not detected on any of the samples. The minimum detectable quantity was determined for paraquat on soil in order to evaluate the efficacy of using SIMS as a screening tool. Paraquat was detected at 3 pg/mm2 (ca. 0.005 monolayers). The results of these studies suggest that SIMS is capable of direct surface detection of a range of pesticides, with low volatility, polar pesticides being the most easily detected.
ISSN:0013-936X
1520-5851
DOI:10.1021/es960213h