Rapid determination of cadmium in rice by portable dielectric barrier discharge-atomic emission spectrometer

Jie Jiang; Zhaojie Li; Yingying Wang; Xiangnan Zhang; Kai Yu; Hong Zhang; Jing Zhang; Jing Gao; Xiangyu Liu; Hengnan Zhang; Wenhai Wu; Na Li

doi:10.1016/j.foodchem.2019.125824

Rapid determination of cadmium in rice by portable dielectric barrier discharge-atomic emission spectrometer

Food Chem. 2020 Apr 25:310:125824. doi: 10.1016/j.foodchem.2019.125824. Epub 2019 Nov 7.

Authors

Jie Jiang¹, Zhaojie Li², Yingying Wang³, Xiangnan Zhang¹, Kai Yu¹, Hong Zhang¹, Jing Zhang¹, Jing Gao¹, Xiangyu Liu¹, Hengnan Zhang¹, Wenhai Wu¹, Na Li⁴

Affiliations

¹ School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, PR China.
² College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, PR China.
³ Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, PR China.
⁴ School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, PR China; School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, PR China. Electronic address: dreamerlina@163.com.

PMID: 31732245
DOI: 10.1016/j.foodchem.2019.125824

Abstract

In this work, a home-made portable dielectric barrier discharge-atomic emission spectrometer (DBD-AES) was explored to the determination of heavy metal in foodstuffs. A rapid and simple method was developed for Cd determination in rice based on this instrument. Rice was pretreated with diluted acid dissolution without complex operations and apparatus. The detection time by DBD-AES is about 3 min and the total analysis time for rice sample is within 11 min. The effects of some key experiment parameters were investigated. The limit of detection was 11.9 μg kg^-1 for Cd in rice, much lower than the maximum allowable level established by EC (200 μg kg^-1). The practical performance of this method was demonstrated by analyzing real and CRM rice samples. With the portability of DBD-AES, the method is suitable for rapid and in-field analysis of Cd in rice. It will be a useful tool for the routine analysis of rice.

Keywords: Cadmium; Dielectric barrier discharge-atomic emission spectrometry; Rapid determination; Rice.

MeSH terms

Cadmium / analysis*
Food Analysis / instrumentation*
Food Analysis / methods
Food Contamination / analysis*
Limit of Detection
Oryza / chemistry*
Spectrophotometry, Atomic / instrumentation*
Spectrophotometry, Atomic / methods
Time Factors

Substances

Cadmium