Ultrasensitive determination of cadmium in seawater by hollow fiber supported liquid membrane extraction coupled with graphite furnace atomic absorption spectrometry
文献类型：期刊论文
| 作者 | Peng, Jin-feng ; Liu, Rui ; Liu, Jing-fu ; He, Bin ; Hu, Xia-lin ; Jiang, Gui-bin |
| 刊名 | SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
 |
| 出版日期 | 2007-05 |
| 卷号 | 62期号:5页码:499-503 |
| 关键词 | cadmium seawater hollow fiber supported liquid membrane extraction graphite furnace atomic absorption spectrometry |
| 英文摘要 | A new procedure, based on hollow fiber supported liquid membrane preconcentration coupled with graphite furnace atomic absorption spectrometry (GFAAS) detection, was developed for the determination of trace Cd in seawater samples. With 1-octanol that contained a mixture of dithizone (carrier) and oleic acid immobilized in the pores of the polypropylene hollow fiber as a liquid membrane, Cd was selectively extracted from water samples into 0.05 M HNO3 that filled the lumen of the hollow fiber as a stripping solution. The main extraction related parameters were optimized, and the effects of salinity and some coexisting interferants were also evaluated. Under the optimum extraction conditions, an enrichment factor of 3 87 was obtained for a I 00-mL sample solution. In combination with graphite furnace atomic absorption spectrometry, a very low detection limit (0.8 ng L-1) and a relative standard deviation (2.5% at 50 ng L-1 level) were achieved. Five seawater samples were analyzed by the proposed method without dilution, with detected Cd concentration in the range of 56.4-264.8 ng L-1 and the relative spiked recoveries over 89%. For comparison, these samples were also analyzed by the Inductively Coupled Plasma Mass Spectrometry (ICP-MS) method after a 10-fold dilution for matrix effect elimination. Statistical analysis with a one-way ANOVA shows no significant differences (at 0.05 level) between the results obtained by the proposed and ICP-MS methods. Additionally, analysis of certified reference materials (GBW (E) 080040) shows good agreement with the certified value. These results indicate that this present method is very sensitive and reliable, and can effectively eliminate complex matrix interferences in seawater samples. (C) 2007 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000248463000011 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22515]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Peng, Jin-feng,Liu, Rui,Liu, Jing-fu,et al. Ultrasensitive determination of cadmium in seawater by hollow fiber supported liquid membrane extraction coupled with graphite furnace atomic absorption spectrometry[J]. SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY,2007,62(5):499-503. |
| APA | Peng, Jin-feng,Liu, Rui,Liu, Jing-fu,He, Bin,Hu, Xia-lin,&Jiang, Gui-bin.(2007).Ultrasensitive determination of cadmium in seawater by hollow fiber supported liquid membrane extraction coupled with graphite furnace atomic absorption spectrometry.SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY,62(5),499-503. |
| MLA | Peng, Jin-feng,et al."Ultrasensitive determination of cadmium in seawater by hollow fiber supported liquid membrane extraction coupled with graphite furnace atomic absorption spectrometry".SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY 62.5(2007):499-503. |
入库方式： OAI收割
来源：生态环境研究中心
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