| 彭洪柳,杨周生,赵婕,宋硙,周通,李柱,胡鹏杰,王朝阳,葛延妍,何鸿浮,黄建宁,吕豪,孙剑,吴龙华.高精度便携式X射线荧光光谱仪在污染农田土壤重金属速测中的应用研究[J].农业环境科学学报,2018,37(7):1386-1395. |
| 高精度便携式X射线荧光光谱仪在污染农田土壤重金属速测中的应用研究 |
| Use of high-precision portable X-ray fluorescence spectrometer on the heavy metal rapid determination for contaminated agricultural soils |
| 投稿时间：2018-04-29 |
| DOI：10.11654/jaes.2018-0568 |
| 中文关键词: 高精度便携式X射线荧光光谱法 重金属 农田土壤 快速测定 |
| 英文关键词: high precision portable X-ray fluorescence (HDXRF) heavy metals agricultural soils rapid detection |
| 基金项目:国家自然科学基金项目（41325003）；中国科学院南京土壤研究所"一三五"计划和领域前沿项目（ISSASIP1613） |
| 作者 | 单位 | E-mail | | 彭洪柳 | 安徽师范大学环境科学与工程学院, 安徽 芜湖 241002
中国科学院南京土壤研究所土壤环境与污染修复重点实验室, 南京 210008 | | | 杨周生 | 安徽师范大学环境科学与工程学院, 安徽 芜湖 241002 | | | 赵婕 | 中国科学院南京土壤研究所土壤环境与污染修复重点实验室, 南京 210008 | | | 宋硙 | XOS公司, 上海 200335 | | | 周通 | 中国科学院南京土壤研究所土壤环境与污染修复重点实验室, 南京 210008 | | | 李柱 | 中国科学院南京土壤研究所土壤环境与污染修复重点实验室, 南京 210008 | | | 胡鹏杰 | 中国科学院南京土壤研究所土壤环境与污染修复重点实验室, 南京 210008 | | | 王朝阳 | 中国科学院南京土壤研究所土壤环境与污染修复重点实验室, 南京 210008 | | | 葛延妍 | 中国科学院南京土壤研究所土壤环境与污染修复重点实验室, 南京 210008 | | | 何鸿浮 | 钦州学院资源与环境学院, 广西 钦州 535000 | | | 黄建宁 | 钦州学院资源与环境学院, 广西 钦州 535000 | | | 吕豪 | 钦州学院资源与环境学院, 广西 钦州 535000 | | | 孙剑 | 钦州学院资源与环境学院, 广西 钦州 535000 | | | 吴龙华 | 中国科学院南京土壤研究所土壤环境与污染修复重点实验室, 南京 210008
钦州学院资源与环境学院, 广西 钦州 535000 | lhwu@issas.ac.cn |
|
| 摘要点击次数: 2773 |
| 全文下载次数: 2415 |
| 中文摘要: |
| 针对便携式X射线荧光光谱（PXRF）法中的高精度便携式X射线荧光光谱（HDXRF）法进行检出限（Cd元素）、稳定性和土壤标准物质准确性的测试，同时对农田土壤中主要重金属元素Cu、Zn、Pb、Cd和类金属As进行快速测定，并将测定结果分别与原子吸收光谱（AAS）法、原子荧光光谱（AFS）法及电感耦合等离子体发射光谱（ICP-AES）法的测定结果建立线性回归方程，以期分析土壤粒径、水分、有机质及土壤类型对测定结果的影响。结果表明：HDXRF法测定土壤中重金属的稳定性高、准确度高、检测限低，对Cd元素的检测下限为0.27 mg·kg-1。颗粒粒径对土壤重金属浓度测定结果有一定影响，样品过100目筛时的测定结果较理想；土壤含水量对HDXRF法的测定结果影响较大，应保证测试土壤样品干燥；有机质对HDXRF法的测定结果存在影响，但可通过调整方程的常数进行校准。HDXRF法测定值更接近实验室ICP-AES法的测定结果，Cu、Zn、Pb和Cd的决定系数分别为0.997 5、0.996 7、0.961 4和0.995 4；HDXRF法与实验室AFS法测定As的决定系数最高可达0.979 8。相比于实验室测定方法，HDXRF法只需简单的前处理，如风干、研磨等，且HDXRF法测定范围宽，适用于土壤中重金属Cu、Zn、Pb、Cd和类金属As的快速测定，是一种简单、快速、准确、可靠的分析方法。 |
| 英文摘要: |
| In this paper, the detection limit(cadmium), stability and the accuracy of reference material of soil were tested by high precision portable X-ray fluorescence(HDXRF) spectrometer in PXRF and HDXRF spectrometer was used to detect the main heavy metal or metalloid elements include copper, zinc, lead, cadmium and arsenic in agricultural soils and linear regressions were established for the determination results of HDXRF spectrometry with atomic absorption spectrometry(AAS), atomic fluorescence spectrometry(AFS) and inductively coupled plasma atomic emission spectrometry(ICP-AES) respectively. Furthermore, the effects of soil particle size, moisture content, organic matter content and soil type on the determination results were also investigated. The results show that:HDXRF spectrometry has high stability,high accuracy and low detection limit for heavy metals and the lower detection limit for cadmium(Cd) is 0.27 mg·kg-1. The particle size of soil samples affected HDXRF performance and 150 μm is a better choice. The moisture content of the soil samples had a significant influence on the results of HDXRF spectrometry, so samples should be kept dry. The soil organic matter content has an influence on the determination of HDXRF spectrometry, but it can be calibrated by adjusting the constant of equation. The determination results of HDXRF spectrometry are more close to the results by ICP-AES method and the determination coefficients of copper(Cu), zinc(Zn), lead (Pb) and Cd are 0.997 5, 0.996 7, 0.961 4 and 0.995 4, respectively. The determination coefficients of As determined by HDXRF spectrometry and traditional laboratory AFS is 0.979 8. Compared with the traditional laboratory measurement methods, the soil samples can be analyzed HDXRF spectrometry just only after simple pretreatment, such as air dried and grinded. Therefore, HDXRF spectrometry is a simple, fast, accurate and reliable analysis method which can be widely used in the determination of heavy metal Cu, Zn, Pb, Cd and As in soil. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
|
|
|
