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Preparation of single-walled carbon nanotube fiber coating for solid-phase microextraction of organochlorine pesticides in lake water and wastewater.
J Sep Sci. 2007 Aug; 30(13):2138-43.JS

Abstract

The feasibility of single-walled carbon nanotubes (SWCNTs) as adsorbents for solid-phase microextraction was investigated by using organochlorine pesticides (OCPs) as model compounds. SWCNTs were attached onto a stainless steel wire through organic binder. Potential factors affecting the extraction efficiency were optimized, including extraction time, extraction temperature, desorption time, desorption temperature, and salinity. The developed method has a linear range of 2-800 ng/L for most analytes, with coefficients of correlation ranging from 0.9911 to 0.9996, LODs ranged from 0.19 to 3.77 ng/L (S/N = 3), and RSDs in the range of 3.5-13.9% (n = 5). Compared with the commercial PDMS fiber, the SWCNT fiber has better thermal stability (over 350 degrees C) and longer life span (over 150 times). The developed method was applied to determine trace OCPs in lake water and wastewater samples with external standard calibration. Results showed that OCP contamination was very low in these samples, and HCHs were detected in almost all water samples while DDT concentrations were almost under detection limits in these samples. Recoveries obtained at 20 ng/L spiking level were in the range of 88.4-111% for OCPs in lake water. For wastewater samples, however, the recoveries were satisfactory for HCHs (63.6-97.1%) but relatively low for DDTs (44.7-116%) due to the high content of organic matter in wastewater.

Authors+Show Affiliations

State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

17654617

Citation

Lü, Jianxia, et al. "Preparation of Single-walled Carbon Nanotube Fiber Coating for Solid-phase Microextraction of Organochlorine Pesticides in Lake Water and Wastewater." Journal of Separation Science, vol. 30, no. 13, 2007, pp. 2138-43.
Lü J, Liu J, Wei Y, et al. Preparation of single-walled carbon nanotube fiber coating for solid-phase microextraction of organochlorine pesticides in lake water and wastewater. J Sep Sci. 2007;30(13):2138-43.
Lü, J., Liu, J., Wei, Y., Jiang, K., Fan, S., Liu, J., & Jiang, G. (2007). Preparation of single-walled carbon nanotube fiber coating for solid-phase microextraction of organochlorine pesticides in lake water and wastewater. Journal of Separation Science, 30(13), 2138-43.
Lü J, et al. Preparation of Single-walled Carbon Nanotube Fiber Coating for Solid-phase Microextraction of Organochlorine Pesticides in Lake Water and Wastewater. J Sep Sci. 2007;30(13):2138-43. PubMed PMID: 17654617.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Preparation of single-walled carbon nanotube fiber coating for solid-phase microextraction of organochlorine pesticides in lake water and wastewater. AU - Lü,Jianxia, AU - Liu,Jingfu, AU - Wei,Yang, AU - Jiang,Kaili, AU - Fan,Shoushan, AU - Liu,Jiyan, AU - Jiang,Guibin, PY - 2007/7/27/pubmed PY - 2007/12/6/medline PY - 2007/7/27/entrez SP - 2138 EP - 43 JF - Journal of separation science JO - J Sep Sci VL - 30 IS - 13 N2 - The feasibility of single-walled carbon nanotubes (SWCNTs) as adsorbents for solid-phase microextraction was investigated by using organochlorine pesticides (OCPs) as model compounds. SWCNTs were attached onto a stainless steel wire through organic binder. Potential factors affecting the extraction efficiency were optimized, including extraction time, extraction temperature, desorption time, desorption temperature, and salinity. The developed method has a linear range of 2-800 ng/L for most analytes, with coefficients of correlation ranging from 0.9911 to 0.9996, LODs ranged from 0.19 to 3.77 ng/L (S/N = 3), and RSDs in the range of 3.5-13.9% (n = 5). Compared with the commercial PDMS fiber, the SWCNT fiber has better thermal stability (over 350 degrees C) and longer life span (over 150 times). The developed method was applied to determine trace OCPs in lake water and wastewater samples with external standard calibration. Results showed that OCP contamination was very low in these samples, and HCHs were detected in almost all water samples while DDT concentrations were almost under detection limits in these samples. Recoveries obtained at 20 ng/L spiking level were in the range of 88.4-111% for OCPs in lake water. For wastewater samples, however, the recoveries were satisfactory for HCHs (63.6-97.1%) but relatively low for DDTs (44.7-116%) due to the high content of organic matter in wastewater. SN - 1615-9306 UR - https://www.unboundmedicine.com/medline/citation/17654617/Preparation_of_single_walled_carbon_nanotube_fiber_coating_for_solid_phase_microextraction_of_organochlorine_pesticides_in_lake_water_and_wastewater_ L2 - https://doi.org/10.1002/jssc.200700083 DB - PRIME DP - Unbound Medicine ER -