|
| 超声提取-电感耦合等离子体质谱法分析土壤中重金属化学形态 |
| Utilization of Ultrasonic Vibration Extraction ICP MS for Metal Soil Chemical Speciation |
| |
| DOI： |
| 中文关键词: 重金属 化学形态 超声提取 电感耦合等离子体质谱法 土壤 |
| 英文关键词: Heavy metals Chemical speciation Ultrasonic vibration extraction ICP MS Soils |
| 基金项目:天津市科学技术委员会重点基金资助项目（13ZCZDSF14600） |
|
| 摘要点击次数: 1304 |
| 全文下载次数: 0 |
| 中文摘要: |
| 采用超声提取处理土壤样品，用ICP-MS分析样品中Cu、Zn、Pb、Cd、Ni、Cr等6种重金属元素形态，通过试验分析超声提取时土壤样品粒径、超声提取时间对提取效率的影响。方法在0.500 μｇ/L～100 μｇ/L之间线性良好，检出限为0.007 μｇ/L～0.8 μｇ/L，实际样品测定结果的RSD为4.7%～22.7%。土壤中重金属4种形态之和的总量与全量的相对偏差为11.0%～36.4%。将该方法与连续振荡法的试验结果比对，表明两方法对土壤样品的提取效率无显著性差异。 |
| 英文摘要: |
| Ultrasonic extraction was used to extract soil samples,and copper，zinc，lead,cadmium and chromium in samples were analyzed by ICP MS.The effects of the particle size of the soil and extraction time on the extraction efficiency were studied by experiments. The method linear ranges were between 0.500 μg/L to 100 μg/L,and the method detection limits were between 0.007 μg/L to 0.8 μg/L.The relative standard deviations of practical samples were from 4.7% to 22.7%.The relative deviations of the sum of 4 chemical speciations and total content were in the range of 11.0%～36.4%. Compared with the mechanical shaking extraction method,there were no significant differences on extraction efficiency. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
