PMID- 20432099 OWN - NLM STAT- MEDLINE DCOM- 20101014 LR - 20191210 IS - 1944-0057 (Electronic) IS - 1944-0057 (Linking) VI - 27 IP - 7 DP - 2010 Jul TI - Simultaneous determination of residues of trichlorfon and dichlorvos in animal tissues by LC-MS/MS. PG - 983-8 LID - 10.1080/19440041003671270 [doi] AB - Trichlorfon is a thermally unstable insecticide that can be easily decomposed to dichlorvos at high temperatures. In this study, a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed for simultaneous determination of the residues of trichlorfon and dichlorvos in animal tissues. Trichlorfon and dichlorvos in animal tissues were extracted with dichloromethane, homogenized/shaken, concentrated, and determined by LC-MS/MS. The two insecticides can be effectively separated and individually determined. The limits of detection (LODs) of trichlorfon and dichlorvos were 0.04 and 0.07 microg kg(-1), respectively; the limits of quantification (LOQs) of the two insecticides were both 5 microg kg(-1). The average recoveries for three spiked blank samples at 10, 20 and 40 microg kg(-1) were in the range 85-106%, with relative standard deviations (RSDs) below 10.6%, which falls in a reasonable range for the analysis of the two insecticides in animal-derived foods. The method is fit-for-purpose for the simultaneous determination of residues of trichlorfon and dichlorvos in animal tissues. FAU - Wang, G M AU - Wang GM AD - Key Laboratory of Biorheology Science and Technology Under Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China. FAU - Dai, H AU - Dai H FAU - Li, Y G AU - Li YG FAU - Li, X L AU - Li XL FAU - Zhang, J Z AU - Zhang JZ FAU - Zhang, L AU - Zhang L FAU - Fu, Y Y AU - Fu YY FAU - Li, Z G AU - Li ZG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Validation Study PL - England TA - Food Addit Contam Part A Chem Anal Control Expo Risk Assess JT - Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment JID - 101485040 RN - 0 (Insecticides) RN - 0 (Pesticide Residues) RN - 7U370BPS14 (Dichlorvos) RN - DBF2DG4G2K (Trichlorfon) SB - IM MH - Analytic Sample Preparation Methods MH - Animals MH - Chromatography, High Pressure Liquid MH - Dichlorvos/*analysis/chemistry MH - *Food Contamination/prevention & control MH - Food Inspection/*methods MH - Insecticides/*analysis/chemistry MH - Limit of Detection MH - Liver/chemistry MH - Meat/*analysis MH - Meat Products/analysis MH - Muscle, Skeletal/chemistry MH - Pesticide Residues/*analysis/chemistry/isolation & purification MH - Reproducibility of Results MH - Spectrometry, Mass, Electrospray Ionization MH - Sus scrofa MH - Tandem Mass Spectrometry MH - Trichlorfon/*analysis/chemistry EDAT- 2010/05/01 06:00 MHDA- 2010/10/15 06:00 CRDT- 2010/05/01 06:00 PHST- 2010/05/01 06:00 [entrez] PHST- 2010/05/01 06:00 [pubmed] PHST- 2010/10/15 06:00 [medline] AID - 921716212 [pii] AID - 10.1080/19440041003671270 [doi] PST - ppublish SO - Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2010 Jul;27(7):983-8. doi: 10.1080/19440041003671270.