| 微波消解和ICP-AES测定堆肥产品中的P和K |
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| 引用本文： | 逯延军,吴星五.微波消解和ICP-AES测定堆肥产品中的P和K[J].安徽农业科学,2008,36(8):3283-3285. |
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| 作者姓名： | 逯延军 吴星五 |
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| 作者单位： | 同济大学环境科学与工程学院,上海,200092 |
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| 摘 要： | 目的]更简便、准确地测定堆肥产品中的P和K。方法]选择合适的酸体系和消解条件,对城市生活垃圾和污泥混合堆肥样品进行消解,然后用ICP-AES仪器对消解后样品中的P和K进行测定。结果]6mlHNO3+2mlHCl+2mlHF+2mlH2O2的酸体系和20min(初温上升到150℃)+8min(150℃上升到210℃)+15min(保持在210℃)的消解条件比较适合堆肥产品的消解,ICP-AES测定堆肥产品中的P和K,精密度和准确性都很好,样品的回收率为90.4%～94.1%。对所选堆肥样品的试验结果表明,P、K和其他重金属如Cu、Zn、Ni等共存时,没有谱线重叠和背景、位移干扰等,在选择的分析线波长处,P和K的检出限分别为0.028和0.132μg/ml,表明该方法具有较高的灵敏度。结论]用微波消解和ICP-AES方法测定堆肥产品中的P和K是可行的。
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| 关 键 词： | 微波消解 ICP-AES 堆肥产品 P和K |
| 文章编号： | 0517-6611(2008)08-03283-02 |
| 修稿时间： | 2007年11月25 |
Determination of Phosphorus and Potassium in Compost product by Microwave Digestion and ICP-AES |
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| LU Yan-jun.Determination of Phosphorus and Potassium in Compost product by Microwave Digestion and ICP-AES[J].Journal of Anhui Agricultural Sciences,2008,36(8):3283-3285. |
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| Authors: | LU Yan-jun |
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| Abstract: | Objective] The aimed was to measure P and K content of compost product simply and exactly. Method] The appropriate acid system and digestion condition were chosen to digest the compost product of the mixture of municipal solid waste and sewage sludge, and then the P and K content of the treated samples were measure by ICP-AES. Result] The acid system of 6 ml HNO3 + 2 ml HCl + 2 ml HF +2 ml H2O2 and the digestion condition of 20 min (from initial temperature to 150 ℃) +8 min (form 150 ℃ to 210 ℃) +15 min (keeping at 210 ℃) were fit for the digestion of the compost product. And the precision and accuracy of measuring P and K content of the compost product by ICP-AES were also high, and the recovery ratio was 90.4%-94.1%. The spectrum overlap and displacement disturbing did not occur when P and K were measured coexisting with other heavy metals, such as Cu、Zn、Ni and so on. At the wavelength of the analysis line, the detection limits of P and K were 0.028、0.132 μg/m lrespectively, which indicating the method had higher sensitivity. Conclusion] Using microwave digestion and ICP-AES to measure P and K content of the compost product was feasible. |
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| Keywords: | Microwave digestion ICP-AES Compost product P and K |
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