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| Use of high-precision portable X-ray fluorescence spectrometer on the heavy metal rapid determination for contaminated agricultural soils |
| Received:April 29, 2018 |
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| KeyWord:high precision portable X-ray fluorescence (HDXRF);heavy metals;agricultural soils;rapid detection |
| Author Name | Affiliation | E-mail | | PENG Hong-liu | College of Environmental Science and Engineering, Anhui Normal University, Wuhu 241002, China
Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | YANG Zhou-sheng | College of Environmental Science and Engineering, Anhui Normal University, Wuhu 241002, China | | | ZHAO Jie | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | SONG Wei | XOS, Shanghai 200335, China | | | ZHOU Tong | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | LI Zhu | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | HU Peng-jie | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | WANG Zhao-yang | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | GE Yan-yan | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | HE Hong-fu | College of Resources and Environment, Qinzhou University, Qinzhou 535000, China | | | HUANG Jian-ning | College of Resources and Environment, Qinzhou University, Qinzhou 535000, China | | | LÜ Hao | College of Resources and Environment, Qinzhou University, Qinzhou 535000, China | | | SUN Jian | College of Resources and Environment, Qinzhou University, Qinzhou 535000, China | | | WU Long-hua | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
College of Resources and Environment, Qinzhou University, Qinzhou 535000, China | lhwu@issas.ac.cn |
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| Abstract: |
| 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. |
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