Preparation and application of poly 3, 4-ethylenedioxythiophene (PEDOT) nanofibers in the pretreatment of samples before the determination of elements in children fingernails
Abstract
Solid phase extraction (SPE) has been used widely for sample preparation in the analytical process. Many efforts have focused on developing novel adsorbents to enrich and purify the analytes effectively. In this study, poly-3, 4-ethylenedioxythiophene (PEDOT) nanofiber was prepared and used as the SPE adsorbent. The fiber performed good in extraction of metal ions, Cd, Sn, Hg, Pb, Al, and As, with the extraction recoveries ranged from 53.9% to 99.6% in the wet digested samples of fingernails. A PEDOT namofibers SPE column coupled with ICP-MS was established for assay of elements in fingernails. The levels of elements (Cd, Sn, Hg, Pb, Al, and As) in the fingernails of 77 healthy Chinese children (6-7 and 10-11 years) were determined. Independent t test shows that no significance has been found between boys and girls. On the contrary, there was obvious difference on the levels of most elements between the two grade groups.
- Publication:
-
Materials Science and Engineering Conference Series
- Pub Date:
- July 2015
- DOI:
- 10.1088/1757-899X/87/1/012093
- Bibcode:
- 2015MS&E...87a2093Q