TiO_2 nanotubes:A novel solid phase extraction adsorbent for the sensitive determination of nickel in environmental water samples  

作　　者：Xin Ning Zhao Qi Zeng Shi Guo Hong Xie Qing Xiang Zhou 

机构地区：[1]School of Chemistry and Environmental Sciences, Henan Normal University, Henan Key Laboratory for Environmental pollution Control, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Xinxiang 453007, China [2]College of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003, China

出　　处：《Chinese Chemical Letters》2008年第7期865-867,共3页中国化学快报（英文版）

基　　金：the Creative Talented Person's Fund of Henan Province (No.[2005]126);Natural Science Foundation of Henan Province(No.072300460010);the Fund of Henan Normal University (No.2006PL06);the grants from the Henan Key Laboratory for environmental pollution control.

摘　　要：A novel method was developed for the sensitive determination of nickel in environmental water samples by using TiO2 nanotubes, a new nanomaterial, as solid phase extraction absorbent. In general, TiO2 nanomaterials were often used for catalytic degradation of pollutants in environmental field, and only a very few application in environmental analytic chemistry. In present work, TiO2 nanotubes was firstly used for the enrichment of nickel and the factors would influence the preconcentration performance were optimized. Under the optimal conditions, TiO2 nanotubes exhibited its good enrichment capacity for nickel and the detection limit of the proposed method was 1 ng· mL^-1. The proposed method was validated with real water samples, and excellent results were obtained with the spiked recoveries in the range of 94.4-99.2%, respectively.A novel method was developed for the sensitive determination of nickel in environmental water samples by using TiO2 nanotubes, a new nanomaterial, as solid phase extraction absorbent. In general, TiO2 nanomaterials were often used for catalytic degradation of pollutants in environmental field, and only a very few application in environmental analytic chemistry. In present work, TiO2 nanotubes was firstly used for the enrichment of nickel and the factors would influence the preconcentration performance were optimized. Under the optimal conditions, TiO2 nanotubes exhibited its good enrichment capacity for nickel and the detection limit of the proposed method was 1 ng· mL^-1. The proposed method was validated with real water samples, and excellent results were obtained with the spiked recoveries in the range of 94.4-99.2%, respectively.

关 键 词：TiO2 nanotubes NICKEL Flame atomic absorption spectrometry 

分 类 号：X832[环境科学与工程—环境工程]