Solid phase microextraction for organochlorine pesticides in water samples using MWCNTs-doped polypyrrole coated on steel fiber before determination by gas chromatography electron capture detector
سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 64
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شناسه ملی سند علمی:
JR_AMECJ-3-4_003
تاریخ نمایه سازی: 14 آذر 1402
چکیده مقاله:
The analysis of organochlorine pesticides (OCPs) residues has
received an increasing attention in the last decades. The solid-phase
microextration (SPME) is a convenient and fast analytical method,
which has been widely used for the determination of volatile and
semivolatile organic compounds in aqueous samples. In this study,
the multiwalled carbon nanotubes/polypyrrole composite (MWCNTs-
PPy) coated on steel fiber was used for extraction OCPs from water
samples by the SPME technique. The effects of various parameters
on the efficiency of SPME process such as extraction time, extraction
temperature, ionic strength, desorption time, and desorption
temperature were studied. Under optimized conditions, the detection
limits for the OCPs varied between ۰.۰۵۱ and ۰.۳۹ pg mL-۱, the interday
and intra-day relative standard deviations for various OCPs using
a single fiber were ۶.۵-۱۱.۵% and ۳.۶-۱۱.۵, respectively. The linear
ranges varied between ۰.۰۰۱ and ۱ ng mL-۱. The proposed method
was successfully applied to the analysis of ground water samples with
the recoveries from ۸۶ to ۱۱۰%
کلیدواژه ها:
نویسندگان
Hamideh Assadollahzadeh
Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman, Iran, P. O. Box ۷۶۳۵۱۳۱۱۶۷
Ebrahim Noroozian
Department of Chemistry, Shahid Bahonar University of Kerman, P.O. Box ۱۳۳-۷۶۱۷۵, Kerman, Iran