2011—2020年农产品重金属检测能力验证结果及质量控制关键点分析

Analysis of proficiency testing results and key points of quality control for heavy metal detection of agricultural products from 2011 to 2020

中文关键词:  农产品  重金属  能力验证  结果分析  质量控制

英文关键词:agricultural products  heavy metals  proficiency testing  result analysis  quality control

中文摘要:

      目的 总结分析2011—2020年农产品重金属检测能力验证结果及质量控制关键点。方法 对2011—2020年农产品重金属能力验证总体情况、存在问题以及发展趋势进行了总结分析, 并对其关键控制点和技术要点进行了探讨。结果 2011—2020年参加单位逐年增加, 2011年参加单位51家, 到2020年增加至210家, 年均增加31.2%。一次性合格率总体提升, 2011年合格率为54.9%, 2020年为77.1%, 提升了22.2个百分点。检测数据的极端值偏离度在2016年最高为120.8% (镉), 变异系数在2015年最大为5.08% (镉), 之后逐渐降低。在样品消解、仪器性能确认、标准曲线质量以及数据质量控制等方面还存在一些问题, 需要进行改进。结论 本研究所提及的关于参加能力验证的质量控制关键点可为农产品重金属检验检测机构提供借鉴。

英文摘要:

      Objective To summarize and analyze the proficiency testing results of heavy metal detection ability and key points of quality control of agricultural products from 2011 to 2020. Methods The overall situation, existing problems and development trend of heavy metal proficiency testing of agricultural products from 2011 to 2020 were summarized and analyzed, and the key control points and technical points were discussed. Results From 2011 to 2020, the number of participating units increased year by year, from 51 in 2011 to 210 in 2020, with an average annual increase of 31.2%. Overall, the one-time pass rate increased, from 54.9% in 2011 to 77.1% in 2020, with an increase of 22.2 percentage points. The maximum deviation of extreme value of test data was 120.80% (Cd) in 2016, and the maximum coefficient of variation was 5.08% in 2015 (Cd), and then gradually decreased. There were still some problems in sample digestion, instrument performance confirmation, standard curve quality and data quality control, which needed to be improved. Conclusion The key points of quality control for participating in proficiency testing mentioned in this study can provide references for for heavy metal inspection and detection institutions of agricultural products.