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| Determination of trace vanadium in environmental water samplesby sequential injection catalytic spectrophotometry |
| Received:April 02, 2014 Revised:April 03, 2014 |
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| DOI： |
| KeyWord:Vanadium (IV); Xylenol orange; Potassium bromate; Catalytic spectrophotometry; |
| Author | Institution |
| zhao shijing |
东北大学理学院分析科学研究中心 |
| fan shihua |
东北大学理学院分析科学研究中心 |
| li hongli |
东北大学分析科学研究中心 |
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| Abstract: |
| The oxidation reaction of xylenol orange (XO) by KBrO3 can be catalyzed by vanadium (IV) in the presence of sulphric acid. Based on this, a new catalytic spectrophotometry combined with sequential injection for the determination of trace V (IV) was established. Some experimental parameters were optimized. Under the optimum reaction conditions, the linear response range for the determination of V (IV) were 0.5-50 ng/ml with the detection limit of 0.4ng/mL. The relative standard deviation for 11 replicate determinations of 10 ng/mL V(IV) was1.1%. The method was used for the determination of trace vanadium in environmental water samples, and the recovery was over 91- 108%. |
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