Integrated disperser freezing purification with extraction using fatty acid-based solidification of floating organic-droplet (IDFP-EFA-SFO) for triclosan and methyltriclosan determination in seawater, sediment and seafood

MARINE POLLUTION BULLETIN

卷:137

Article

Gao, Ming^1,2  Wang, Jun¹  Zhang, Xiaona¹  Dahlgren, Randy A.^2,3  Ru, Shaoguo¹  Wang, Xuedong² 

[1] Ocean Univ China, Coll Marine Life, Qingdao 266000, Shandong, Peoples R China

[2] Wenzhou Med Univ, Key Lab Watershed Sci & Hlth Zhejiang Prov, Wenzhou 325035, Zhejiang, Peoples R China

[3] Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA

关键词: Triclosan;    Methyltriclosan;    Medium-chain fatty acid;    Disperser freezing purification;    Fatty acid-based solidification floating organic-droplet;    Marine environmental samples;   

DOI  :  10.1016/j.marpolbul.2018.09.026

来源: Elsevier

【 摘 要 】

A microextraction method for the determination of triclosan and methyltriclosan in marine environmental samples was developed. The disperser was first serves as a preliminary extractant for analytes, then as a frozen solvent to remove impurities at - 20 degrees C, and finally as a disperser agent in the microextraction procedure. With the extractants solidified and float on the surface of the aqueous phase at low temperature, a separation was achieved to avoided use of specialized laboratory instruments. The method was optimized using Plackett-Burman design and central composite design as follows: 146 mu L octanoic acid as extractant, 793 mu L acetoneas disperser, 3.0 min centrifugation and 1.1 min vortex time. The limits of detection were 0.022-0.060 mu g L-1 or mu g kg(-1) and recoveries were 83.3-103.5% for TCS and MTCS in seawater, sediments and seafood. The method has excellent prospects for sample pre-treatment and trace-level analysis of triclosan and methyltriclosan in marine environmental samples.

【 授权许可】

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