乳粉中铅、铬、汞、砷含量测定的实验室间比对分析

doi:10.12160/j.issn.1672-5190.2023.05.014

Abstract

Abstract:

[Objective] This study aimed to evaluate the detection capability of the group laboratories by conducting an inter laboratory comparison analysis on the detection of lead, chromium, mercury, and arsenic contents in milk powder. [Method] Using the self-developed quality control samples of milk powder matrix containing lead, chromium, mercury, and arsenic as the experimental materials, following uniformity and stability verification, the laboratory detection capability of lead, chromium, mercury, and arsenic contents in milk powder were evaluated using Robust statistical method algorithm A. [Result] The uniformity and stability test results of the quality control samples met the requirements of the inter laboratory comparison plan. The satisfaction rates for the detection of lead, chromium, mercury, and arsenic contents in milk powder were 98.4%, 98.4%, 96.7%, and 95.2%, respectively. There were no unsatisfactory results, and the overall detection capability of the participating laboratories was good. [Conclusion] By conducting technical comparison analysis on the detection of heavy metal element contents in milk powder, a solid foundation has been laid for improving the detection capability and quality control level of the group laboratories.

Key words: milk powder, lead, chromium, mercury, arsenic, inter laboratory comparison, Robust statistical method

CLC Number:

TS252.7

DUAN Jianhua, WANG Xiujun, ZHAO Jing, LI Cuizhi, LYU Zhiyong. Inter Laboratory Comparison Analysis on the Detection of Lead, Chromium, Mercury and Arsenic Contents in Milk Powder[J]. Animal Husbandry and Feed Science, 2023, 44(5): 100-107.

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Inter Laboratory Comparison Analysis on the Detection of Lead, Chromium, Mercury and Arsenic Contents in Milk Powder

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