原子吸收分光光度法測定水中鋅的不確定度評定

原子吸收分光光度法測定水中鋅的不確定度評定

陶文魯 桂烈勇太倉市環(huán)境監(jiān)測站,江蘇太倉215400摘　要:參照JJF1059-1999《測量不確定度評定與表示》的技術規(guī)范，通過對原子吸收分光光度法測定水質(zhì)Zn標準樣品過程的分析．闡明了Zn測量不確定度的評定步驟和評定方法，歸納提出了影響水樣中Zn測量不確定度的主要因素和不確定度分量的主要來源，并給出了相對標準不確定度分量，得出了該Zn標準樣品測量不確定度的評定結(jié)果：擴展不確定度為U=0．012mg／L，或相對不確定度為3．5％。結(jié)論：評定程序和方法符合技術規(guī)范要求，操作簡便、結(jié)果可靠，有較高的應用價值。[著者文摘]

關鍵詞:鋅 測量不確定度 原子吸收分光光度法
分類號:　X824[免標]文獻標識碼：A文章編號：1673-1212（2006）05-0161-03欄目信息：監(jiān)測與分析
相關文獻:主題相關

Detecting the Nondeterministic Degree of Zinc in Water with Atomic Absorption Spectrophotometric MethodTAO Wen - lu, GUI Lie - yong Taicang City Environmental Monitoring Station, Taicang 215400, ChinaAbstract:According to JJF1059 - 1999 Evaluation and Expression of Uncertainty in Measurement, the nondeterministie degree of zinc in water with atomic absorption spectrophotometfic method is analysized by nondeterministic degree evaluation and indicate theory. The evaluation step and its method of nondeterministic degree were explained to get the evaluation results. Results The uncertainty of the result of zinc in water tested by atomic absorption spectrometry is 0.012mg/L as absolute value and 3.5% as relative value. Conclusion The method for determining zinc from water by atomic absorption spectrometry is clearand adequate and without repeated procedure. This method has high application value.[著者文摘]

Key words:Zinc; nondeterminisfic degree; atomic absorption spectrophotometric method