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Methodology for trace analysis of 17 pyrethroids and chlorpyrifos in foodstuff by gas chromatography-tandem mass spectrometry.
- Source :
-
Analytical and bioanalytical chemistry [Anal Bioanal Chem] 2016 Nov; Vol. 408 (27), pp. 7689-7697. Date of Electronic Publication: 2016 Aug 20. - Publication Year :
- 2016
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Abstract
- This study aimed to develop an efficient, sensitive, and reliable analytical method for trace analysis of 17 different pyrethroids and chlorpyrifos in the fatty content of animal products, including beef, chicken, eggs, fish, and milk. The method developed is based on an ultrasound extraction using lyophilized samples, a solid phase extraction cleanup with basic alumina and C18 cartridges in tandem, and analysis by gas chromatography coupled to tandem mass spectrometry in negative chemical ionization mode. Recovery values were in the range of 27-128 % with relative standard deviation always below 25 %, and chiral analysis of recovery data showed predominance of isomers of cis form over trans. Limits of detection (LODs) ranged from 0.002 to 6.43 ng g <superscript>-1</superscript> lipid weight (lw), and limits of quantification (LOQs) ranged between 0.006 and 21.4 ng g <superscript>-1</superscript>  lw. The developed methodology was used for the analysis of 25 samples of fatty foods. All samples were positive for at least one of the pesticides, chlorpyrifos, bifenthrin, cyhalothrin, permethrin, cypermethrin, or deltamethrin, with mass fraction levels ranging from 0.03 to 270 ng g <superscript>-1</superscript> lw. Graphical Abstract ᅟ.
- Subjects :
- Animals
Cattle
Chickens metabolism
Eggs analysis
Fish Products analysis
Gas Chromatography-Mass Spectrometry
Milk chemistry
Red Meat analysis
Solid Phase Extraction methods
Tandem Mass Spectrometry
Chlorpyrifos isolation & purification
Food Analysis methods
Food Contamination analysis
Insecticides isolation & purification
Pesticide Residues isolation & purification
Pyrethrins isolation & purification
Subjects
Details
- Language :
- English
- ISSN :
- 1618-2650
- Volume :
- 408
- Issue :
- 27
- Database :
- MEDLINE
- Journal :
- Analytical and bioanalytical chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 27544519
- Full Text :
- https://doi.org/10.1007/s00216-016-9865-5