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| Determination of Ultraviolet Filters in Environmental Water Samples Using Rapidly Prepared NiTi Alloy Based Solid Phase Microextraction Fiber Coupled with High Performance Liquid Chromatography |
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| DOI： |
| KeyWord:solid phase microextraction（SPME） high performance liquid chromatography（HPLC） ultraviolet filters enrichment sample preparation |
| Author | Institution |
| ZHEN Qi，JIN Pan-xia，ZHANG Min，WANG Hui-ju，WANG Xue-mei，DU Xin-zhen |
1.西北师范大学化学化工学院;2.甘肃省生物电化学与环境分析重点实验室 |
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| Abstract: |
| A new fiber coating with a large specific surface area was prepared by direct acid pretreatment of NiTi alloy wire.The extraction performance of the prepared fiber was evaluated by high performance liquid chromatography（HPLC） using aromatic compounds as model analytes .Good extraction efficiency and selectivity were achieved for different types of ultraviolet filters.The key parameters influencing the extraction efficiency were optimized for 2-hydroxy-4-methoxybenzophenone(BP-3)，2-ethylhexyl p-methoxycinnamate(EHMC)，2-ethylhexyl-4-（dimethylamino）benzoate(OD-PABA) and 2-ethylhexyl 2-hydroxybenzoate(EHS).Under the optimized conditions，the linearity was obtained in the range of 0.1-300 μg?L-1.The limits of detection ranged from 0.025 μg?L-1 to 0.097 μg?L-1.The intra day and inter day precisions for the proposed method with the single fiber were in the ranges of 4.9%-5.8% and 5.5%-6.4%，respectively.Its fiber-to-fiber reproducibility ranged from 6.3% to 7.1%.The proposed method was successfully applied in the concentration and determination of target UV filters in environmental water samples.The resulting fiber is very stable in SPME procedure,and could be rapidly prepared in a highly reproducible manner. |
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