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| 便携式XRF土壤重金属检测仪在环境应急监测中的应用探讨 |
| A Study on Application of Portable XRF Instrument for Heavy Metal Measuring in Environmental Emergency Monitoring |
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| DOI： |
| 中文关键词: 金属元素 X射线荧光光谱法 原子吸收分光光度法 原子荧光分光光度法 应急监测 土壤 |
| 英文关键词: Metallic element XRF Atomic absorption spectrophotography Atomic fluorescence spectrophotometry Emergency monitoring Soils |
| 基金项目:国家自然科学基金资助项目（41101491）；国家自然科学基金青年基金资助项目（21107006） |
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| 中文摘要: |
| 系统评估了便携式XRF重金属检测仪的精密度、准确度及测定影响因素，开展了该方法测定土壤中Cu、Zn、As、Pb、Cr与国标分析方法的系统比对。结果表明：上述5种元素的方法检出限为5.7 mg/kg～16.0 mg/kg，土壤标准样品测定6次结果的RSD为1.0%～4.7%，Zn、Pb和As测定结果的相对误差＜10%；与国标法相比，便携式XRF重金属检测仪测定Cu、Zn、As、Pb的准确度较好，测定Cr的准确度波动较大。将该方法用于应急污染事故监测，可迅速锁定污染物及污染区域，实现野外分析的预判 |
| 英文摘要: |
| The precision and accuracy of portable XRF heavy metal measuring instrument were evaluated. A comparison of the national standard method with the current method in determining Cu、Zn、As、Pb、Cr showed that the method detection limits were in range of 5.7 mg/kg～16.0 mg/kg. The RSD of the standard soil samples were from 1.0% to 4.7% by 6 duplicate measurements, and the RSD of Zn, Pb, As were small than 10%. This method had a good accuracy in determination Cu,Zn,As and Pb. A large fluctuant accuracy was observed in Cr measurement. When applying in environmental emergency monitoring, this method could help in quick identifying the pollutants and making predictions in the field. |
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