■ 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*任何耗材； ■ 批量检测，可以与多达 84 位的自动进样器联用。 钢研纳克 NX-200土壤重金属分析仪 土壤重金属检测仪技术参数 硬件参数： X射线光管：70kV一体化端窗小型X射线管 探测器：原装进口一体封装，分辨率可达125eV（5.889keV） 前处理装置（选配）：干燥装置、研钵、筛网 电池模块：DC12V 充电器：AC220V 仪器尺寸：205Wx414Lx263H（mm） 工作环境：-20~40℃ 性能参数： 测试速度快：Cd测试10分钟，Hg 、Pb、As、Cr、Ni、Cu、Zn测试为2分钟； 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； 单块电池续航时间8~10小时。 X 射线光管：65kV 风冷侧窗 X 射线管 ■ 高压电源：65kV/100W 高精度数字控制 ■ 探测器：原装进口一体封装，分辨率可达 125eV（5.889keV） ■ 电源：AC（220±22）V，50/60Hz，1.0A ■ 仪器尺寸：450Wx500Lx380H（mm） ■ 工作环境：-20~40℃ ■ 自动进样（选配）：84 位 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.
