Multiresidue pesticide analysis by ion‐trap mass spectrometry

Abstract

The ion trap has been demonstrated to be able to detect and quantify 245 target pesticides extracted via the Luke method while providing concurrent confirmation of presence via full scan data at the sub-ppm level. The precision and accuracy of the analytical approach was determined to be no greater than 15% relative standard deviation. A comparison study of over 100 incurred residues analyzed by the ion trap and gas chromatography with an array of element-selective detectors has indicated that sample clean-up will probably be necessary before quantification is acceptable for all target compounds. The data obtained using a combination of gas chromatography and mass spectrometry and presented for 250 target pesticides constitutes the basic information required to duplicate and extend the methodology.

Residue analysis of 500 high priority pesticides: Better by GC–MS or LC–MS/MS?

“…Advantages of EI ionization are a low influence of molecular structure on response, and a large number of characteristic fragments. Extensive studies describe the simultaneous determination of 245–400 pesticides by GC–EI–MS with single quadrupole mass filters (Cairns et al, 1993; Fillion, Sauve, & Selwyn, 2000; Stan, 2000; Chu, Hu, & Yao, 2005). The use of ion traps in scan mode is more simple because no selection of characteristic ions is necessary during data acquisition.…”

“…The applicability of GC–MS in pesticide residue analysis is summarized in pesticide analytical manuals (Thier & Zeumer, 1992; van Zoonen, 1998), applications from instrument producers (Agilent Technologies, 1999), or scientific studies (Cairns et al, 1993; Fillion, Sauve, & Selwyn, 2000; Wong et al, 2003). Several mass spectral databases contain electron impact (EI) mass spectra of many pesticides (Ehrenstorfer, 2005; NIST/EPA/NIH, 2005).…”

Monitoring of the Pesticide Diazinon in Soil, Stem and Surface Water of Rice Fields

“…The extraction of several OPPs (atrazine, parathionmethyl, chlorpyrifos, fenamiphos and methidathion) by this method has been reported. 18,19 For detecting diazinon, gas chromatography with different detectors [20][21][22][23][24][25] and high performance liquid chromatography (HPLC) [26][27][28][29][30][31] have been used. Furthermore, primary studies concerning the biodegradation of OPPs in the synthetic media of soil and water were studied.…”

Non-invasive multiresidue screening methods for the determination of pesticides in heritage collections

“…Methods of pesticide analyses have been largely driven by the food industry [1][2][3]. In their comprehensive paper of 2000, Filion et al [4] screened fruit and vegetable samples for 251 known pesticides by extracting pulp with solvent before clean-up on solid phase extraction cartridges.…”