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    甲醛濃度的定量方法及計算方式(甲醛釋放量環境測試艙)


    甲醛濃度的定量方法

         量取10ml乙酰丙酮(體積分數為0.4%)和10ML乙酸銨溶液(質量分數為2%)于50ML帶塞三角燒瓶中,再從結晶皿中移取10ML待測液到該燒瓶中,塞上瓶塞,搖勻,再放到(40±2)℃水槽中夾熱15min,然后把這種黃綠色的反應溶液凈置暗處,冷卻至室溫(18~28℃,約1H).在分光光度計時用蒸餾水代替反應溶液作空白試驗,確定空白值為AB    

    標準曲線的繪制

    GB/T17657-19994.11.5.5.2繪制標準曲線

    甲醛溶液的濃度計算,精確至0.1mg/L

                              C=Fx(AS-AB)   .........................(1)

    式中:

        C---甲醛濃度,單位為毫克每升(mg/L)

        F---標準曲線斜率,單位為毫克每升(mg/L)

        AS--反應溶液的吸光度

        AB----蒸餾水的吸光度

        環儀公司專業生產模擬環境類試驗箱,甲醛釋放量環境測試艙甲醛環境測試試驗室甲醛及VOC環境試驗箱等等。歡迎大家前來咨詢或了解。

     

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    環儀儀器人造板家具甲醛釋放環境測試艙文獻

     

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