A simple flow-injection chemiluminescence method for the determination of trace pentavalent vanadium in water samples |
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| Authors: | Gai Zhang Zuchao Meng Hairui Ma |
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| Affiliation: | 1. Shaanxi Key Laboratory of Physico-Inorganic Chemistry , College of Chemistry &2. Materials Science, Northwest University , Xi’an 710069, China;3. School of Materials and Chemical Engineering, Xi’an Technological University , Xi’an 710032, China gaizhang98@yahoo.cn;5. College of Chemistry &6. Chemical Engineering, Xi'an Petroleum University , Xi'an 710065, China;7. The Eleventh Research Institute of the Sixth Academy of CASC , P.O. Box 15-11, Xi’an 710100, China |
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| Abstract: | A simple method for rapid determination of trace pentavalent vanadium in natural water was presented by flow-injection chemiluminescence (CL). Through water injection, luminol and potassium permanganate were eluted from the anion exchange column to generate the CL, which was enhanced in the presence of V(V). Under the optimum conditions, the increased CL intensity was linear with V(V) concentration in the range from 0.1 to 100?ng?mL?1. The limit of detection was 50?pg?mL?1 (3σ) and the relative standard deviation (RSD) was 2.24% (n?=?5) for a 1.0?ng?mL?1?V(V). At a flow rate of 2.0?mL?min?1, one cycle of analysis could be performed in 0.5?min with a RSD of less than 3.0%. The proposed method was successfully applied to the determination of vanadium in natural water. |
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| Keywords: | on-line analysis environmental vanadium chemiluminescence water |
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