Zhou Qing-Xiang, Zhao Xin-Ning, Xiao Jun-Ping
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, Xinxiang, China.
Talanta. 2009 Mar 15;77(5):1774-7. doi: 10.1016/j.talanta.2008.10.018. Epub 2008 Oct 19.
TiO(2) nanotubes, a new nanomaterial, are often used in the photocatalysis. Due to its relatively large specific surface areas it should have a higher enrichment capacity. However, very few applications in the enrichment of pollutants were found. This paper described a new procedure to investigate the trapping power of TiO(2) nanotubes with cadmium and nickel in water samples as the model analytes and flame atomic absorption spectrometry for the analysis. The possible parameters influencing the enrichment were optimized. Under the optimal SPE conditions, the method detection limits and precisions (R.S.D., n=6) were 0.25 ngmL(-1) and 2.2% for cadmium, 1 ngmL(-1) and 2.6% for nickel, respectively. The established method has been successfully applied to analyze four realworld water samples, and satisfactory results were obtained. The spiked recoveries were in the range of 90.2-99.2% for them. All these indicated that TiO(2) nanotubes had great potential in environmental field.
二氧化钛纳米管作为一种新型纳米材料，常用于光催化。由于其相对较大的比表面积，它应该具有更高的富集能力。然而，在污染物富集方面的应用却很少。本文描述了一种新的方法，以水样中的镉和镍为模型分析物，用二氧化钛纳米管的捕集能力和火焰原子吸收光谱法进行分析。对影响富集的可能参数进行了优化。在最佳固相萃取条件下，镉的方法检出限和精密度（相对标准偏差，n = 6）分别为0.25 ngmL(-1)和2.2%，镍的方法检出限和精密度分别为1 ngmL(-1)和2.6%。所建立的方法已成功应用于分析四个实际水样，并获得了满意的结果。加标回收率在90.2-99.2%之间。所有这些表明二氧化钛纳米管在环境领域具有巨大的潜力。
