Relevance study of bare and coated zero valent iron nanoparticles for lindane degradation from its by-product monitorization

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• 作者：I. San Rom¨¢n ; M.L. Alonso ; L. Bartolom¨¦ ; A. Galdames ; E. Goiti ; M. Ocejo ; M. Moragues ; R.M. Alonso ; J.L. Vilas
• 关键词：Lindane ; Zero-valent iron nanoparticles ; SPE ; HS&ndash ; SPME
• 刊名：Chemosphere
• 出版年：2013
• 出版时间：October, 2013
• 年：2013
• 卷：93
• 期：7
• 页码：1324-1332
• 全文大小：692 K

文摘

Zero-valent iron nanoparticles (NZVI) as well as polymer-stabilized nanoparticles were synthesized and used for lindane (¦Ã-hexachlorocyclohexane) degradation in aqueous solution. To study the effectiveness of the different coated nanoparticles, simple and rapid analytical methods have been developed to measure and to detect lindane and its by-products. For the monitorization of lindane degradation solid-phase extraction (SPE) was used, while volatile by-products formation measurement was carried out by headspace-solid phase microextraction (HS-SPME) followed by GC/MS. The SPE-GC/MS method provides low detection limits (0.2 ¦Ìg L^?1), high recovery (above 95 % ) and it is a valuable tool for kinetic studies of the degradation process for each polymer used, while HS-SPME-GC/MS has proved to be an effective tool for the extraction and evaluation of volatile degradation by-products.