Self-asembled Gold Nanoparticles Coating for Solid-Phase Microextraction of Ultraviolet Filters in Environmental Water
10.11895/j.issn.0253-3820.140802
- VernacularTitle:自组装金纳米粒子涂层对环境水样中紫外线吸收剂的固相微萃取
- Author:
Haixia LIU
;
Yaoxia YANG
;
Mingguang MA
;
Xuemei WANG
;
Xinzhen DU
- Publication Type:Journal Article
- Keywords:
Gold nanoparticles coating;
Self-assembly;
Solid-phase microextraction;
Ultraviolet filters
- From:
Chinese Journal of Analytical Chemistry
2015;(2):207-211
- CountryChina
- Language:Chinese
-
Abstract:
Self-assembled gold nanoparticles ( AuNPs) coating was fabricated using an etched stainless steel wire as a support on which AuNPs were first deposited, then after modified with mercaptan, another layer of AuNPs was self-assembled. The AuNPs modified stainless steel wire was used in solid phase microextraction (SPME) coupled with high performance liquid chromatography (HPLC) for the determination of ultraviolet ( UV) filters in environmental water. The best extraction efficiencies were achieved within 30 min at 55℃ and at pH 7 with stirring rate of 800 r/min. Under the optimized conditions, the established AuNPs-SPME-HPLC method for the determination of UV filters benzophnone-3 ( BP-3 ) , 2-ethylhexyl-4-( N, N-dimethylamino ) benzoate ( OD-PABA) , 2-ethylhexyl-4-trimethoxycinnamate ( EHMC) and 2-ethylhexyl salicylate ( EHS) was linear in the range of 0. 004-200 μg/L. The limits of detection of the method were 0. 43-570 ng/L ( S/N=3 ) . The relative standard deviation ( RSD ) of AuNPs-SPME-HPLC was 1 . 9%-4 . 2% ( n=5 ) for spiked water samples of 20 μg/L each UV filter. In the case of real water samples analyses, the recoveries of spiked UV filters were 77 . 9%-108% with RSDs of 3 . 1%-8 . 0% ( n=5 ) .
