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Personal Errors in Reading Stain Lengths of Direct Reading Colorimetric Indicators

直讀式檢知管之判讀誤差

摘要


直讀式檢知管因為使用方便,被廣泛應用於偵測空氣中之污染物,廠商甚至宣稱生手亦可應用自如。事實上,我國現階段以檢知管偵測有機蒸氣之普遍性彷彿勝於標準活性炭管採樣法。過份沈溺於檢知管的方便性而忽略判讀時所伴隨之誤差,結果常造成錯誤的環境印象。於是本研究以國內普遍使用之日製檢知管採集標準正己燒蒸氣而由生手及經初步訓練之人員判讀,發現以檢知管判讀濃度之準確度為22%,訓練會改善判讀之準確度,但對精密度的改善沒有顯著之影響。據此,建議只使用檢知管做初步偵測,發現濃度近似值與濃度範圍,而不便做過度延伸。

關鍵字

無資料

並列摘要


The colorimetric indicator tubes for n-hexane are rapid convenient and relatively less-expensive methods for determining the vapor of n-hexane in ambient air. However, this method only can be used for determining concentration- range and approximation in concentration. Although the training through group discussion is likely to reduce the personal error in reading stain length, the accuracy is in the order of plus or minus 22%.

並列關鍵字

n-hexane accuracy indicator tubes

延伸閱讀