Microwave Assisted Head Space Solid Phase Microextraction for Analysis of Butachlor and Chlorpyrifos Pesticides in Urine

Microwave assisted head-space solid phase microextraction (MA-HS-SPME) followed by gas chromatography using electron capture detection system (GC-ECD) were developed for determination of chloraacetanilide (butachlor) and chlorpyrifos present in biological samples. The different parameters including...

Full description

Saved in:
Bibliographic Details
Published in:Analytical chemistry letters (Online) 2014-07, Vol.4 (4), p.224-231
Main Authors: Ghavidel, Fateme, Shahtaheri, Seyed Jamaleddin, Torabbeigi, Marzieh, Rahimi Froushani, Abbas
Format: Article
Language:English
Subjects:
biological samples
butachlor
chlorpyrifos
GC-ECD
MA-HS-SPME
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Microwave assisted head-space solid phase microextraction (MA-HS-SPME) followed by gas chromatography using electron capture detection system (GC-ECD) were developed for determination of chloraacetanilide (butachlor) and chlorpyrifos present in biological samples. The different parameters including microwave irradiation power and microwave irradiation time, which affected on the extraction rate, were optimized. The optimum conditions for extraction of both pesticides were as following: irradiation power of 600 W, microwave irradiation time 10 min, sample volume: 10 ml, sample pH=2 and added salt 10 %. The limit of detection (LOD) for butachlor and chlorpyrifos were 0.0864 and 0.0832 ng/ml, respectively. The optimized methods for both compounds were validated for 6 consequtive days and 6 inter-day using two concentrations of 10 and 100 ng/ml in spiked urine samples that the ranges of obtained recoveries were 91-104 %.
ISSN:2229-7928
2230-7532
DOI:10.1080/22297928.2014.995704