Research of the certified reference material of mecury in lyophilized bovine blood
10.3760/cma.j.cn121094-20200820-00483
- VernacularTitle:冻干牛血中汞标准物质的研制
- Author:
Fugang ZHANG
1
;
Wei ZHAO
;
Huifang YAN
Author Information
1. 100050 北京，中国疾病预防控制中心职业卫生与中毒控制所
- Keywords:
Certified reference material;
Mecury;
Bovine blood
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2021;39(9):685-688
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To develop a reference material for the analysis of mercury in freeze-dried bovine blood.Methods:The whole blood of the bovine was collected, mercury standard solution was added, After mixing, packaging and freeze-drying. Two concentration levels of reference materials were prepared. The homogeneity and stability were evaluated by t-test and F-test methods respectively. The uncertainty in preparation, long-term stability, short-term stability and fixed value were evaluated Evaluation and assignment of reference materials. The research products were fixed value and were analyzed by two methods and fixed value in 9 laboratories and the uncertainty during development was analyzed.Results:The reference material has good uniformity and can be kept stably for 12 months at -20 ℃; When transported at ≤35 ℃, the quantity value is stable within 7 days; After re dissolution, it can be stored at 4 ℃ for 5 days; The values are 9.4 respectively μg/L and 29.2 μg/L, and the uncertainty is ±1.1 respectively μg/L and ±2.3 μg/L ( k=2) . Conclusion:The indexes of reference materials for mercury composition analysis in freeze-dried bovine blood meet the requirements of technical specifications and have certain application value.
