Rapid test of heavy metal cadmium content in rice of some region by X-ray fluorescence spectrometer
10.7687/j.issn1003-8868.2017.06.118
- VernacularTitle:X线荧光光谱仪快速测定某地区大米中重金属镉含量的研究
- Author:
Xiaogong JIANG
;
Shunping DAI
;
Lixia YANG
;
Cheng CHEN
;
Linling LUO
;
Yamin CAI
;
Xiaojuan PENG
- Keywords:
X-ray fluorescence spectrometer;
rice;
cadmium;
quantitative detection;
food safety
- From:
Chinese Medical Equipment Journal
2017;38(6):118-120
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determinate the heavy metal cadmium content in rice to ensure food safety.Methods Several brands and batch numbers of rice were collected and divided into groups A and B.Group A contained 24 pieces of rice from the canteens,and group B involved in 22 pieces from the farm product markets.Cadmium content in rice was detected quantitatively with X-ray fluorescence spectrometer,and then evaluated according to GB 2762-2012 which determined rice was not qualified in case cadmium content was more than 0.2 mg/kg.Results Group A had cadmium content between 0.00 and 0.477 mg/kg,the times of ultra standard being 2.385 and the disqualification rate being 29.2％ (7/24),and group B had cadmium content between 0.065 and 0.619 mg/kg,the times of ultra standard being 3.095 and the disqualification rate being 68.2％ (15/22).Excessive cadmium content in rice occurred in both canteens and markets,while the canteens was better than the markets.Conclusion X-ray fluorescence spectrometer detects cadmium content in rice rapidly and simply,and is worthy promoting in elementary facilities.
