103年度水產品中重金屬(鉛及鎘)檢驗之能力試驗

Results of Proficiency Testing in 2014: Heavy Metals Lead and Cadmium in Seafood

廖彩汝(Cai-Ru Liao)；江爾蕓(Erh-Yun Chiang)；吳正寧(Zheng-Ning Wu)；李婉媜(Wan-Chen Lee)；林雪如(Xue-Ru Lin)；李明鑫(Ming-Shin Lee)；蔡淑貞(Shu-Jean Tsai)

能力試驗 ； 重金屬 ； 水產品 ； 鉛 ； 鎘 ； proficiency testing ； heavy metals ； seafood ； lead ； cadmium

食品藥物研究年報

6期（2015 / 12 / 01）

308 - 314

繁體中文

103年度食品藥物管理署(下稱食藥署)舉辦檢驗機構對於水產品中重金屬(鉛及鎘)檢驗能力試驗，測試樣品係以蟹肉為基質，參與測試之檢驗機構有20家，包括1縣市衛生局及19家民間檢驗機構，2項重金屬判定標準係以Robust-Z或測試值之合格範圍擇優者為評定結果。評列為「滿意」有15家，佔75.0%，「應注意」有1家，佔5.0%，「不滿意」有4家檢驗機構，佔20.0%。本次參加之檢驗機構為食藥署認證項目者共計11家，僅1家評列為「不滿意」，其須提供改善報告外，並予以複測，其餘檢驗機構皆呈滿意結果。透過本次能力試驗，可知檢驗機構對水產品中重金屬(鉛及鎘)之檢驗能力表現大致良好，且提供檢驗機構間檢驗技術能力比對之機會。能力試驗結果可作為檢驗機構持續改進其品質管理系統之參考，以及食藥署監控認證檢驗機構之檢驗品質依據之一。

A proficiency test was held in 2014 in order to understand the analytical competency of laboratories in testing for heavy metals in seafood. Crab meat was used as the testing material and was shown to be consistent and effective in terms of homogeneity and stability. A total of 20 laboratories participated in the test, including 1 local health bureau and 19 private laboratories. The analytical results were analyzed using Robust-Z and categorized as follows: |Z| score ≦ 2 was “satisfactory”, 2 ＜ |Z| ＜ 3 was “acceptable” and |Z| ≧ 3 was “unsatisfactory”. The amounts of lead and cadmium in the testing samples should be in the range of 0.027-0.071 ppm and 4.230-7.000 ppm, respectively. The better of the two results was used. Among the 20 laboratories, 15, 1 and 4 laboratories were graded as satisfactory, acceptable and unsatisfactory, respectively. An accredited laboratory was graded as unsatisfactory and was requested to provide a corrective action report and take a second test. The other 10 accredited laboratories were graded as satisfactory. This proficiency test revealed that most laboratories were competent in testing for heavy metals in seafood. It also provided the opportunity for laboratories to assess their performance in relation to other laboratories and make necessary improvements to their quality system.