| 微波消解测定水样中总磷 |
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| 引用本文： | 赵建平,杨明光,王建华.微波消解测定水样中总磷[J].理化检验(化学分册),2004,40(10):589-591. |
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| 作者姓名： | 赵建平 杨明光 王建华 |
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| 作者单位： | 宁波市环境监测中心站,宁波,315010 |
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| 摘 要： | 研究了以H2O2-HNO3为氧化剂，用微波消解测定水样中总磷的分析方法。通过正交试验选择合适的消解条件与氧化剂投入量，选择合适的显色酸度及测定波长，方法对自然水样测定平均相对标准偏差为3．3％，平均回收率为100．3%。
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| 关 键 词： | 光度法 微波消解 总磷 水样 正交试验 |
| 文章编号： | 1001-4020(2004)10-0589-03 |
| 修稿时间： | 2004年2月2日 |
APPLICATION OF MICROWAVE HEATING-SAMPLE DIGESTION METHOD TO THE DETERMINATION OF TOTAL PHOSPHORUS IN WATER |
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| ZHAO Jian-ping,YANG Ming-guang,WANG Jian-hua.APPLICATION OF MICROWAVE HEATING-SAMPLE DIGESTION METHOD TO THE DETERMINATION OF TOTAL PHOSPHORUS IN WATER[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2004,40(10):589-591. |
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| Authors: | ZHAO Jian-ping YANG Ming-guang WANG Jian-hua |
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| Abstract: | The sample digestion with H2O2-HNO3 as oxidant and using the microwave-heating technique was applied to the analysis of water sample for its total phosphorus content. The parameters of the microwave heating and the suitable amount of H2O2-HNO3 to be used were optimized by the orthogonal experimental design method. The total phosphorus in water after its complete oxidation to the orthophosphate state, was determined by the heterophosphomolybdate blue-photometric method. Average RSD of the method was 3. 3 %, and average recovery was 100.3%. |
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| Keywords: | Photometry Microwave-heating sample digestion Total phosphorus Water sample Orthogonal experimental design |
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