品牌钢研纳克
型号NX200s
仪器类型便携式
元素28种
分析时间3min
为解决土壤重金属快检难题，钢研纳克X荧光土壤重金属分析仪NX-100S，NX-100S土壤重金属分析仪能有效应对国标GB15618《土壤环境质量 农用地土壤污染风险管控标准》限定的八种重金属需求，短三分钟可26种元素。
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）。
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.
■ 测析方法：能量色散 X 荧光分析方法；
■ 对象：固体、粉末、液体；
■ 测量元素含量范围：ppm-99.99%；
■ 检出限：检出限小于 1ppm；
■ 时间：1-60 秒（一秒可显示结果）；
■ 射线防护优于国标《X 射线衍射仪和荧光分析仪卫生防护标准 GBZ115-2002》 ；
■ 配备样品测试杯，可循环使用；
■ 可选配 84 位自动进样系统。
http://xjr003.cn.b2b168.com
