重鉻酸鉀法測定化學需氧量的不確定度評估

重鉻酸鉀法測定化學需氧量的不確定度評估
白曉琳沈陽工業(yè)大學石油化工學院,遼寧遼陽111003摘　要:重鉻酸鉀法測定化學需氧量是常用的測定化學需氧量的方法,也是國家標準GB11914-89中規(guī)定的方法,但對該方法的不確定度的計算尚未見報道.為此,用不確定度這一概念對重鉻酸鉀法測定化學需氧量中不確定度的來源進行了鑒別和分析,并針對一次測定結(jié)果對不確定度的大小進行了定量.[著者文摘]

關鍵詞:重鉻酸鉀法 測定 化學需氧量 不確定度 評估
分類號:　X830.3[免標]文獻標識碼：A文章編號：1672-4410（2006）02-0120-04欄目信息：
相關文獻:主題相關

Evaluation of uncertainty in determination of chemical oxygen demand-dichromate methodBAI Xiao-lin School of Petrochemical Engineering, Shenyang University of Technology, Shcnyang 111003, ChinaAbstract:Dichromate method is a common method to determine chemical oxyen demand, which is also the stipulated method in state standard GB11914-89,but the calculation of its uncertainty was never reported. Thereforce, the concept of uncertainty was used to identify and analyze the sources of uncertainty in dichromate method of determining chemical oxyen demand. Aimed at one determination result, the uncertainty scale was quantified.[著者文摘]

Key words:dichromate method ; determination ; COD; uncertainty ; evaluation