土壤重金属测定仪 粉末冶金检测 江苏土壤重金属检测仪
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关 键 词：江苏土壤重金属检测仪
行 业：仪器仪表 分析仪器 元素分析仪器
发布时间：2022-01-14
土壤重金属测定仪是一款土壤重金属快速检测仪器。该土壤重金属测定仪可以检测土壤中的多种重金属元素，如Pb、Cd、Hg、As、Cu、Cr6+、Al、Zn等金属元素，还具有检测速度快，检测准确度高等特点。主要用于土壤中重金属元素检测工作，在土壤污染调研、研究中有着重要的应用。
Multi-elemental Analysis by NCS NX-200 Energy Dispersion X-ray Fluorescence Spectrometry and Its Application on the Traceability of Soybean
Origin
a College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
b Institute of Quality Standard and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, and Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
Accepted:
Feb. 6, 2020; Published: Feb. 25, 2020.
Considering the lower analytical sensitivity, numerous ED-XRF manufacturers are committed to improve the instrumental performance.37 For example, the NX-100S ED-XRF from NCS Testing Technology Co., Ltd.(Beijing, China) have been reported to detect Cd in soil and food samples as low as < 0.1 mg kg-1. These ED-XRF instruments can be attached to a car or be loaded into a special suitcase for on-site use with a battery.
Therefore, in this work, a miniaturized ED-XRF was used for the multi-elemental analysis of soybean samples from five main producing areas in northern China (the
Heilongjiang, Liaoning, Inner Mongolia, Xinjiang, and Henan provinces) after establishing instrumental optimization and calibration. To analyze the analytical
results, the multi-layer perceptron belonging to artificial neural network was carefully studied and utilized to establish a provenance model. The ED-XRF proved to be
effective and efficient to measure micro and trace multi-elements for the fast identification of soybean origin.
钢研纳克 NX-200土壤重金属分析仪能量色散Ｘ射线荧光光谱法测定土壤
１．１ 主要仪器与样品
能量色散Ｘ射线荧光光谱仪（钢研纳克检测技术有限公司）：铑靶光管（功率５０Ｗ，１．５ｍＡ），ＦａｓｔＳＤＤ探测器（在５．８８９ｋｅＶ 处分辨率是１２８ｅＶ）；
ＸＲＦ样品杯（高度２２ｍｍ，直径２４ｍｍ，ＣｈｅｍｐｌｅｘＩｎｄｕｓｔｒｉｅｓ）；玛瑙研钵；标准筛。
土壤成分分析标准物质：ＧＳＳ２（ＧＢＷ０７４０２）、
ＧＳＳ３（ＧＢＷ０７４０３）、ＧＳＳ４（ＧＢＷ０７４０４）、ＧＳＳ５
（ＧＢＷ０７４０５ ）、ＧＳＳ６ （ＧＢＷ０７４０６ ）、ＧＳＳ７
（ＧＢＷ０７４０７）、ＧＳＳ８ （ＧＢＷ０７４０８）、ＧＳＳ１２
（ＧＢＷ０７４１２）；水系沉积物成分分析标准物质：
ＧＳＤ－３ａ（ＧＢＷ０７３０３ａ）、ＧＳＤ－５ａ（ＧＢＷ０７３０５ａ）、
ＧＳＤ－８ａ（ＧＢＷ０７３０８ａ）、ＧＳＤ－１０（ＧＢＷ０７３１０）、ＧＳＤ－１１（ＧＢＷ０７３１１）、ＧＳＤ－１２（ＧＢＷ０７３１２）；岩石成分分
析标准物质：ＧＳＲ－５（ＧＢＷ０７１０７）。
钢研纳克 NX-200土壤重金属分析仪能量色散Ｘ射线荧光光谱法测定土壤
１．１ 主要仪器与样品
能量色散Ｘ射线荧光光谱仪（钢研纳克检测技术股份有限公司）；岩石成分分析标准物质：ＧＳＲ－５（ＧＢＷ０７１０７）。
１．２ 土壤样品处理
将采集的土壤样品混匀后用四分法缩分至约１００ｇ。缩分后的土样经风干后，除去土样样品中石子和动物残体等异物，之后将采集的土壤样品自然风干，用玛瑙研钵研压，使样品通过１０目（１ ５００μｍ）的筛，除去砂砾，混匀。之后用玛瑙研钵研磨样品使之全部通过１００目（１５０μｍ）筛，混匀后，称取３ｇ样品，放入样品杯中备用。
