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
■ 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。
■ 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；
■ NX-200土壤重金属分析仪*任何耗材；
■ 批量，可以与多达 84 位的自动进样器联用。
钢研纳克转型得益于“应用”基因
这一阵，钢研纳克技术有限公司（以下简称“钢研纳克”）重金属仪生产线忙得不可开交。“今天早晨我们还在开会，研究扩大重金属仪的产能。” 钢研纳克技术有限公司副总经理陈吉文说。今年开始，随着土壤普查项目的启动，第三方对土壤重金属仪的需求迅速升温，体现在了钢研纳克的供不应求。“在环境领域，我们的重点是重金属和VOCs监测。”陈吉文说。
对于土壤，因为其工作量大，对效率的要求较高，对可现场操作、方便迅捷的快检设备需求在也升温。尽管没有进入**下达的土壤普查技术文档，但无须对样品进行前处理的XRF因其便于使用的优势，快速进入了土壤领域。钢研纳克的XRF产品土壤重金属仪就是其代表之一。钢研纳克NX-200系列土壤重金属仪。
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.
http://xjr003.cn.b2b168.com
