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Ultra trace analysis of 17 organochlorine pesticides in water samples from the Arctic based on the combination of solid-phase extraction and headspace solid-phase microextraction-gas chromatography-electron-capture detector.
J Chromatogr A. 2010 Feb 19; 1217(8):1191-202.JC

Abstract

Solid-phase extraction (SPE) was combined with headspace solid-phase microextraction (HS-SPME) for the highly effective enrichment of 17 ultra trace organochlorine pesticides in water samples. The target compounds were successfully transferred from water samples to a gas chromatography capillary column by means of four consecutive steps, namely SPE, solvent conversion, HS-SPME, and thermal desorption of the SPME fiber. Parameters, including elution volume and breakthrough volume in the SPE step, temperature in the solvent conversion step, and fiber type, ionic strength, extraction temperature, extraction time, and pH in the SPME step were optimized to improve the performance of the method through either single factor comparative experiment or the orthogonal experimental design approach. After optimization, the method gave high sensitivity with a method detection limit ranging from 0.0018 to 0.027 ng L(-1), good repeatability with a relative standard deviation less than 20% (n=4) and acceptable recovery with a value mostly exceeding 60%. External standard calibration was employed for the quantification, and a wide linear range (from 0.0010 to 60 ng mL(-1)) with R(2) values ranging from 0.9988 to 0.9999 were observed. In the end, the method was successfully applied to the Arctic samples, and the results showed that, among all the organochlorine pesticides, hexachlorocyclohexanes (HCHs) were the most predominant in the Arctic surface water body with sum of their concentrations ranging from 0.262 to 3.156 ng L(-1).

Authors+Show Affiliations

Department of Oceanography, College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China.No affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Validation Study

Language

eng

PubMed ID

20034632

Citation

Qiu, Canrong, and Minggang Cai. "Ultra Trace Analysis of 17 Organochlorine Pesticides in Water Samples From the Arctic Based On the Combination of Solid-phase Extraction and Headspace Solid-phase Microextraction-gas Chromatography-electron-capture Detector." Journal of Chromatography. A, vol. 1217, no. 8, 2010, pp. 1191-202.
Qiu C, Cai M. Ultra trace analysis of 17 organochlorine pesticides in water samples from the Arctic based on the combination of solid-phase extraction and headspace solid-phase microextraction-gas chromatography-electron-capture detector. J Chromatogr A. 2010;1217(8):1191-202.
Qiu, C., & Cai, M. (2010). Ultra trace analysis of 17 organochlorine pesticides in water samples from the Arctic based on the combination of solid-phase extraction and headspace solid-phase microextraction-gas chromatography-electron-capture detector. Journal of Chromatography. A, 1217(8), 1191-202. https://doi.org/10.1016/j.chroma.2009.12.027
Qiu C, Cai M. Ultra Trace Analysis of 17 Organochlorine Pesticides in Water Samples From the Arctic Based On the Combination of Solid-phase Extraction and Headspace Solid-phase Microextraction-gas Chromatography-electron-capture Detector. J Chromatogr A. 2010 Feb 19;1217(8):1191-202. PubMed PMID: 20034632.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ultra trace analysis of 17 organochlorine pesticides in water samples from the Arctic based on the combination of solid-phase extraction and headspace solid-phase microextraction-gas chromatography-electron-capture detector. AU - Qiu,Canrong, AU - Cai,Minggang, Y1 - 2009/12/16/ PY - 2009/09/07/received PY - 2009/12/05/revised PY - 2009/12/08/accepted PY - 2009/12/26/entrez PY - 2009/12/26/pubmed PY - 2010/4/14/medline SP - 1191 EP - 202 JF - Journal of chromatography. A JO - J Chromatogr A VL - 1217 IS - 8 N2 - Solid-phase extraction (SPE) was combined with headspace solid-phase microextraction (HS-SPME) for the highly effective enrichment of 17 ultra trace organochlorine pesticides in water samples. The target compounds were successfully transferred from water samples to a gas chromatography capillary column by means of four consecutive steps, namely SPE, solvent conversion, HS-SPME, and thermal desorption of the SPME fiber. Parameters, including elution volume and breakthrough volume in the SPE step, temperature in the solvent conversion step, and fiber type, ionic strength, extraction temperature, extraction time, and pH in the SPME step were optimized to improve the performance of the method through either single factor comparative experiment or the orthogonal experimental design approach. After optimization, the method gave high sensitivity with a method detection limit ranging from 0.0018 to 0.027 ng L(-1), good repeatability with a relative standard deviation less than 20% (n=4) and acceptable recovery with a value mostly exceeding 60%. External standard calibration was employed for the quantification, and a wide linear range (from 0.0010 to 60 ng mL(-1)) with R(2) values ranging from 0.9988 to 0.9999 were observed. In the end, the method was successfully applied to the Arctic samples, and the results showed that, among all the organochlorine pesticides, hexachlorocyclohexanes (HCHs) were the most predominant in the Arctic surface water body with sum of their concentrations ranging from 0.262 to 3.156 ng L(-1). SN - 1873-3778 UR - https://www.unboundmedicine.com/medline/citation/20034632/Ultra_trace_analysis_of_17_organochlorine_pesticides_in_water_samples_from_the_Arctic_based_on_the_combination_of_solid_phase_extraction_and_headspace_solid_phase_microextraction_gas_chromatography_electron_capture_detector_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9673(09)01814-7 DB - PRIME DP - Unbound Medicine ER -