測試速度快：Cd精確測試10分鐘，Hg 、Pb、As、Cr、Ni、Cu、Zn精確測試為2分鐘；
射線防護(hù)優(yōu)于國標(biāo)《X射線衍射儀和熒光分析儀衛(wèi)生防護(hù)標(biāo)準(zhǔn)GBZ115-2002》 ；
配備樣品測試杯，可循環(huán)使用；
單塊電池續(xù)航時間8~10小時。

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.

NX-200S便攜式土壤重金屬檢測儀能有效應(yīng)對國標(biāo)GB15618《土壤環(huán)境質(zhì)量 農(nóng)用地土壤污染風(fēng)險(xiǎn)管控標(biāo)準(zhǔn)》限定的八種重金屬檢測需求，央企品牌，上市公司，品質(zhì)保證！

土壤重金屬檢測儀NX-200
NX-200可對土壤、水系沉積物等樣品類型中20多種重金屬元素進(jìn)行快速測試和篩查，儀器具有前處理簡單、操作簡便、便于攜帶，自帶鋰離子電池，可戶外作業(yè)等特點(diǎn)。