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Detection of Trace Bromate in Water by UV Spectrophotometry |
Received:December 12, 2011 Revised:March 29, 2012 |
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DOI:doi:10.3969/j.issn.2095-1035.2012.02.0004 |
KeyWord:bromate;ultraviolet spectrophotometry;determination |
Author | Institution |
LIU Zhen |
中国药科大学 分析化学教研室,江苏 南京 |
CUI Yan |
1 中国药科大学 分析化学教研室,江苏 南京 ;2 江苏正大天晴制药有限公司,江苏 南京 |
HU Zhijun |
中国药科大学 分析化学教研室,江苏 南京 |
YAN Zhenyu |
中国药科大学 分析化学教研室,江苏 南京 |
CHEN Jianqiu |
中国药科大学 分析化学教研室,江苏 南京 |
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Abstract: |
A simple ultraviolet-spectrophotometric method was developed for the detection of bromate in water samples. Bromate reacts with iodide in acidic media to produce tri-iodide which has a UV absorbance at 288 nm and thus can be monitored spectrophotometrically. The recovery of bromate detection by UV spectrophotometry was 98%~102%, and the relative standard deviation was 1.7% (n=9). The calibration equation for bromate analysis has a good linearity with regression coefficient of 0.9991. The detection of limit for bromate was 4.0 μg/L, showing that the method can meet the testing requirement. |
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