国产便携式土壤重金属光谱分析仪厂家

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）。

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.

■ 操作简便，一键傻瓜式测试；
■ 方便携带，可实现普通轿车车载运输；
■ NX-200土壤重金属分析仪可以对土壤中的重金属元素进行测试；
■ 前处理简单，可直接对土壤样品进行检测；
■ NX-200土壤重金属分析仪无需任何耗材；
■ 批量检测，可以与多达 84 位的自动进样器联用。