| 微波消解测定污水中CODcr的比对实验 |
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| 引用本文： | 曾东,许振成,贺德春,吴根义,秦国建. 微波消解测定污水中CODcr的比对实验[J]. 现代仪器, 2011, 17(1) |
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| 作者姓名： | 曾东 许振成 贺德春 吴根义 秦国建 |
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| 作者单位： | 1. 环境保护部华南环境科学研究所,广州,510655;湖南农业大学,长沙,410128
2. 湖南农业大学,长沙,410128 |
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| 基金项目： | 环保公益性行业科研专项基金 |
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| 摘 要： | 为研究在COD_(cr)测定中采用家用微波炉替代专用微波消解装置的可行性,采用美的MK823ESJ-PA型微波炉消解与专用WMX-Ⅲ-B微波消解装置消解,硫酸亚铁铵滴定法测定水样中COD_(cr)测定的比对研究,讨论消解功率、消解时间、C1~-干扰等因素对测定的影响,确定最佳的试验条件,当美的MK823ESJ-PA微波炉消解功率为中高火(616 W),消解时间为5 min时,精密度与准确度良好,RSD≤3.72%,加标回收率为94.22%-104.76%,与WMX-Ⅲ-B微波消解装置消解测定结果相对偏差≤3.76%。
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| 关 键 词： | 微波消解装置 美的微波炉 密封消解 COD_(CT) |
Comparative experiment of CODcr measure methods by dedicated microware |
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| Zeng Dong,Xu Zhencheng,He Dechun,Wu Genyi,Qin Guojian. Comparative experiment of CODcr measure methods by dedicated microware[J]. Modern Instruments, 2011, 17(1) |
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| Authors: | Zeng Dong Xu Zhencheng He Dechun Wu Genyi Qin Guojian |
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| Abstract: | This paper explore the possibility of using commercial microware digestion unit(Midea MK823ESJ-PA)instead of dedicated microware digestion unit(WMX-Ⅲ-B) in the method for determining CODcr.The best condition to measure CODcr could be determined by testing the methodical frequency,digestion time,and Cl~-during the trial.It was shown from the test that the microwave digestion was quick(5minutes),accurate,reliable, RSD≤3.72% under large and middle power conditions.The recovery of the method were 93.4%～118%,and the rilative deviation was under 3.76% comparing with using dedecated microware digestion unit. |
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| Keywords: | CODcr |
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