A retrospective analysis of the assessment results of arsenide quality control in laboratories of national endemic diseases prevention and control institutions
10.3760/cma.j.cn231583-20200501-00108
- VernacularTitle:全国地方病防治机构实验室砷化物质量控制考核结果的回顾分析
- Author:
Xiaohong JI
;
Wei WANG
;
Lin GAO
;
Lijun ZHAO
;
Yanhui GAO
- From:
Chinese Journal of Endemiology
2021;40(1):63-67
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyse the quality control assessment results of arsenic testing laboratories of national endemic disease prevention and control institutions from 2006 to 2020, so as to further strengthen the quality control of arsenic determination in laboratories of national endemic disease prevention and control institutions, and to ensure the accuracy and reliability of national endemic arsenic poisoning monitoring data.Methods:The water arsenic and urinary arsenic test results of arsenic quality control laboratories from 2006 to 2020 were collected and evaluated by Z-ratio scoring method(│Z│≤2 was qualified, 2 < │Z│ < 3 was basically qualified, │Z│≥3 was unqualified), and the qualification rates of water arsenic and urinary arsenic in different years and different provinces were calculated.Results:From 2006 to 2020, the number of laboratories participating in water arsenic quality control in 14 provinces has increased from 25 to 167, and the number of laboratories participating in urinary arsenic quality control increased from 22 to 90. The standard deviation of laboratory assessment samples was relatively stable, all < 0.05 mg/L. The quality control assessment results from 2006 to 2020 were calculated according to │Z│ < 3, the qualified rate of water arsenic ranged from 64.0% to 100.0%, and that in urine was 54.5% to 100.0%. The quality control assessment results from 2009 to 2020 were calculated according to │Z│≤2, the qualified rate of water arsenic was 84.6% - 100.0%, and that in urine was 83.6% - 100.0%. Among the 13 water arsenic assessment results from 2009 to 2020, according to │Z│≤2, provincial laboratories reported all qualified years for 8 times, prefecture, city and county-level laboratories reported all qualified years for 2 times; there were 8 provinces with all qualified laboratories at province level and 3 provinces with all qualified laboratories at prefecture, city and county-level. Among the 13 assessment results of urinary arsenic from 2009 to 2020, according to │Z│≤2, the provincial laboratories reported all qualified years for 6 times, and the prefecture, city and county-level laboratories all qualified for 1 times; there were 6 provinces in which all provincial laboratories were qualified, and there were 6 provinces in which all prefecture, city and county-level laboratories were qualified.Conclusions:The quality control work of laboratories is improving day by day, but there are still some problems in individual links. Laboratories at all levels should continue to strengthen the construction of laboratories and the training of relevant personnel, further improve the theoretical and technical level of inspectors, and continuously improve the detection quality, to make the analysis data more reliable and comparable, so as to ensure the quality of arsenic poisoning prevention and monitoring work.
