Citation: WANG Ying-Jun, WANG Ya-Wei, JIANG Gui-Bin. Solid-phase Extraction for Analysis of Short-chain Chlorinated Paraffins in Water Samples[J]. Chinese Journal of Analytical Chemistry, ;2018, 46(7): 1102-1108. doi: 10.11895/j.issn.0253-3820.181008 shu

Solid-phase Extraction for Analysis of Short-chain Chlorinated Paraffins in Water Samples

1.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 3 January 2018
Revised Date: 4 April 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (Nos. 21625702, 21621064) and the State Key Development Program for Basic Research of China (No. 2015CB453100).

A method for short-chain chlorinated paraffins (SCCPs) analysis in water samples based on solid-phase extraction (SPE) was developed using gas chromatography coupled with electron capture negative chemical ionization mass spectrometry (GC-ENCI-MS). SPE parameters including the sorbent, elution solvent and elution volume were optimized. Agilent Bond Elut-C₁₈ was precleaned with 3 mL of hexane, 3 mL of methanol and conditioned with 3 mL of H₂O before use. After enriched by the cartridge, the sample was washed by 3 mL of methanol (10%, V/V) and eluted by 3 mL of mixture of hexane and dichloromethane (1:1, V/V). The results showed that the limits of detection (LOD) of SCCPs were 18 ng/L, and the corresponding limits of quantitation of SCCPs were 60 ng/L. Recovery experiment showed that, for the water samples spiked with 1 μg/L, the recoveries were in the range of 90%-135% and the relative standard deviations were less than ±10%. Finally, the SCCPs in 20 surficial water samples collected in Beijing were analyzed using the method proposed here. The range of the concentrations of SCCPs was
- Short-chain chlorinated paraffins,
- Solid-phase extraction,
- Water analysis
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