飞鹰伦理影院

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得利特（北京）科技有限公司

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測量石油産品酸值應該注意哪些？

发表时间：2019-12-25 17:37作者：得利特

(1) 測量石油産品酸值所用乙醇的純度要符合要求，必要時應加以提純處理。以除去所含的酸、醛和其它幹擾物。

(2)測量石油産品酸值滴定时动作要迅速，尽量缩短滴定时间，以减少二氧化化碳对测定的影响。

(3)測量石油産品酸值各次测定所加的指示剂的量要相同，不能太多，以免引起滴定误差。

(4)測量石油産品酸值滴定至終點附近時，應逐漸加入堿液，在估計差一兩滴就要到達終點時，改爲半滴半滴加，以減少滴定誤差。

(5)測量石油産品酸值爲了便于觀察指示劑的變色，可在錐形瓶下面襯以白紙或鋪有白色瓷板，使滴定在白色背景下進行。

(6)油品顔色很深時，應改爲電位滴定或其它方法確定終點。

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