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| X射线荧光光谱法测定土壤和沉积物中的锰 | |
| 引用本文： | 陈春霏,洪欣,王晓飞,苏荣,梁晓曦,何宇,卢秋,田艳.X射线荧光光谱法测定土壤和沉积物中的锰[J].岩矿测试,2020,39(5):777-784. |
| 作者姓名： | 陈春霏 洪欣 王晓飞 苏荣 梁晓曦 何宇 卢秋 田艳 |
| 作者单位： | 广西壮族自治区生态环境监测中心, 广西 南宁 530028;湖北理工学院环境科学与工程学院, 湖北 黄石 435003 |
| 基金项目： | 广西自然科学基金项目“基于砷、镉污染农田安全利用的生态修复研究”（2015GXNSFEA139001）；广西自然科学基金项目“西江流域水环境重金属污染机制与调控”（2013GXNSFEA053001）；广西土壤污染与生态修复人才小高地项目 |
| 摘 要： | X射线荧光光谱法(XRF)是测定土壤和沉积物中锰的重要方法,具有制样简单、非破坏性测定、检测速度快等优点。目前用于建立工作曲线的土壤和沉积物标准物质的锰含量最高为2490mg/kg,采用XRF法测定受污染土壤和沉积物中的锰含量时易超出工作曲线测定范围。本文将锰标准溶液定量加入到土壤标准物质中,制备锰含量更高的校准样品,工作曲线的测定上限范围由2490mg/kg提高至3780mg/kg。该方法测定不同含量标准物质中锰含量的结果均在认定值范围内,实际样品的加标回收率为97.8%～108.3%,高含量锰的实际样品测定值与电感耦合等离子体发射光谱法测定值的相对偏差小于5.7%,相对标准偏差(RSD)小于0.4%(n=7)。实验结果表明该法测定锰含量高的土壤和沉积物的准确度和精密度良好。 |
| 关 键 词： | X射线荧光光谱法|加标回收|锰|土壤|沉积物 |
| 收稿时间： | 2019/5/30 0:00:00 |
| 修稿时间： | 2019/9/30 0:00:00 |
Determination of Manganese Content in Soils and Sediments by X-ray Fluorescence Spectrometry |
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| CHEN Chun-fei,HONG Xin,WANG Xiao-fei,SU Rong,LIANG Xiao-xi,HE Yu,LU Qiu,TIAN Yan.Determination of Manganese Content in Soils and Sediments by X-ray Fluorescence Spectrometry[J].Rock and Mineral Analysis,2020,39(5):777-784. | |
| Authors: | CHEN Chun-fei HONG Xin WANG Xiao-fei SU Rong LIANG Xiao-xi HE Yu LU Qiu TIAN Yan |
| Institution: | Guangxi Zhuang Autonomous Region Ecological and Environmental Monitoring Centre, Nanning 530028, China;School of Environmental Science and Engineering, Hubei Polytechnic University, Huangshi 435003, China |
| Abstract: | BACKGROUND: Due to the advantages of simple sample preparation, non-destructive determination, and rapid detection, the X-ray fluorescence spectrometry technique has become a robust method for determination of manganese in soil or sediment. Manganese in soil and sediment standard material has the maximum content of 2490mg/kg, thus the traditional X-ray fluorescence spectrometry (XRF) can easily suffer from the drawbacks of standard curve measurement range due to the limited manganese content in standard soil or sediment samples. OBJECTIVES: To develop a good method for the determination of manganese in polluted soil or sediment. METHODS: To address this major concern, manganese solutions were added to the commercially available soil standards in a quantitative manner to give a series of new soil standards with higher manganese content. The content of manganese can be determined by X-ray fluorescence spectrometry. RESULTS: The establishment of a novel standard curve by taking advantage of these new soil standards could significantly promote the upper limit of manganese measurement from 2490mg/kg to 3780mg/kg. The analytical results of manganese were consistent with the reference value and a recovery of 97.8%-108.3%. The results of high-manganese samples were consistent with the values acquired by inductively coupled plasma-optical emission spectrometry, with the relative deviation less than 5.7% and the relative standard deviation lower than 0.4% (n=7). CONCLUSIONS: Results show good accuracy and precision in the determination of high-manganese soils and sediments. |
| Keywords: | X-ray fluorescence spectrometry|spiked recovery test|manganese|soil|sediment |
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