九十九年包裝飲用水重金屬檢驗之能力試驗

Results of Proficiency Testing in 2010: Heavy Metals in Drinking Water

江爾蕓(Erh-Yun Chiang) ； 白美娟(Mei-Chuan Po) ； 李婉媜(Wan-Chen Lee) ； 李明鑫(Ming-Shin Lee) ； 陳惠芳(Hwei-Fang Cheng)

《食品藥物研究年報》 2期 (2011/12) Pp. 8-21

https://doi.org/10.6945/ARFDR.201112.0010

摘要

A proficiency testing was held in 2010 in order to understand the analytical competence of the joined laboratories for heavy metals in drinking water. Given drinking water was used as the testing materials that showed consistent and effective in terms of homogeneity and stability. A total of 26 laboratories participated in the test, including 4 and 22 laboratories from local health bureaus and private sectors, respectively. The analytical results were analyzed using Robust-Z statistics into three grading categories as follows: |Z-score| ≦ 2 as ‘satisfactory’, 2 ＜ |Z-score| ＜ 3 as ‘acceptable’ and |Z-score| ≧ 3 as ‘unsatisfactory’. Among the laboratories evaluated, the satisfactory percentage were in the range of 82.3-93.8%, 81.3-87.5%, 82.3-100%, 82.4-88.2%, 81.3-85.7%, 87.5-93.3% for lead, zinc, copper, cadmium, mercury and arsenic, respectively. Laboratories graded in the category of ‘unsatisfactory’ were mandated to provide a report of correction, as well as were requested to take the second test. Laboratories are expected to consistently improve their quality control system through this proficiency testing.

關鍵字

能力試驗 ； 包裝飲用水 ； 重金屬 ； 鉛 ； 鋅 ； 銅 ； 鎘 ； 汞 ； 砷

並列摘要

A proficiency testing was held in 2010 in order to understand the analytical competence of the joined laboratories for heavy metals in drinking water. Given drinking water was used as the testing materials that showed consistent and effective in terms of homogeneity and stability. A total of 26 laboratories participated in the test, including 4 and 22 laboratories from local health bureaus and private sectors, respectively. The analytical results were analyzed using Robust-Z statistics into three grading categories as follows: |Z-score| ≦ 2 as ‘satisfactory’, 2 ＜ |Z-score| ＜ 3 as ‘acceptable’ and |Z-score| ≧ 3 as ‘unsatisfactory’. Among the laboratories evaluated, the satisfactory percentage were in the range of 82.3-93.8%, 81.3-87.5%, 82.3-100%, 82.4-88.2%, 81.3-85.7%, 87.5-93.3% for lead, zinc, copper, cadmium, mercury and arsenic, respectively. Laboratories graded in the category of ‘unsatisfactory’ were mandated to provide a report of correction, as well as were requested to take the second test. Laboratories are expected to consistently improve their quality control system through this proficiency testing.

並列關鍵字

proficiency testing ； drinking water ； heavy metals ； lead ； zinc ； copper ； cadmium ； mercury ； arsenic