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| 碱消解-火焰原子吸收分光光度法测定固体废物中的六价铬 |
| Determination of Hexavalent Chromium in the Solid Waste by Alkaline Digestion-Flame Atomic Absorption Spectrophotometry |
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| DOI： |
| 中文关键词: 六价铬 碱消解 火焰原子吸收分光光度法 固体废物 |
| 英文关键词: Hexavalent chromium Alkali digestion Flame atomic absorption spectrometry Solid wastes |
| 基金项目: |
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| 摘要点击次数: 3199 |
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| 中文摘要: |
| 采用碱消解-火焰原子吸收分光光度法测定固体废物中的六价铬，样品消解温度控制在90 ℃～95 ℃范围内，消解时间为1 h，消解液pH值调节至9.0±0.2。方法检出限与测定下限分别为0.05 mg/kg与0.20 mg/kg，对不同基体实际样品平行测定的RSD为1.4%～13.0%，加标回收率为93%～130%。 |
| 英文摘要: |
| A method for determining Cr(Ⅵ) in the solid waste by alkali digestion atomic absorption spectrophotometry was developed.The pre treatment conditions were discussed.The optimum digestion temperature of the samples should be at 90 ℃～95 ℃,the digestion time was 60 minutes,and pH of the digestion fluid was 9.0±0.2.The detection limit and reliable quantitation limit of this method were 0.05 mg/kg and 0.20 mg/kg respectively,the RSD of actual sample on the different matrix was 1.4%～13.0%,spiking recovery was 93%～130%. |
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