有機液(ye)體化(hua)學(xue)試劑(ji)餾程測定(ding)時溫度計的(de)使用

溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)的選擇和使(shi)用(yong)對餾程測(ce)定結果(guo)的影響至關(guan)重(zhong)要,溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)的分(fen)度(du)(du)(du)(du)(du)和范(fan)圍需符合標準的規定有(you)兩種溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)可供選擇,即(ji)全浸(jin)式(shi)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)和局浸(jin)式(shi)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)"使(shi)用(yong)全浸(jin)式(shi)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)時,需進行溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)外露部(bu)分(fen)的溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)校(xiao)正即(ji)露莖(jing)校(xiao)正"使(shi)用(yong)局浸(jin)式(shi)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)時應(ying)保(bao)證測(ce)定時的浸(jin)入深度(du)(du)(du)(du)(du)和校(xiao)準時的浸(jin)入深度(du)(du)(du)(du)(du)大致(zhi)相(xiang)同"另外,溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)的位置(zhi)要適當(dang),應(ying)保(bao)證溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)的感溫(wen)(wen)(wen)泡全被樣品蒸氣所包圍"溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)在(zai)倒置(zhi)、磕(ke)碰(peng)或(huo)遇到劇烈(lie)震動時,其水(shui)銀柱(zhu)容(rong)易出現(xian)脫(tuo)(tuo)節(jie)現(xian)象"使(shi)用(yong)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)前(qian)應(ying)檢(jian)查其水(shui)銀柱(zhu)是否有(you)脫(tuo)(tuo)節(jie)現(xian)象發生(sheng),如有(you),可輕(qing)輕(qing)適度(du)(du)(du)(du)(du)甩動溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)使(shi)水(shui)銀柱(zhu)復位,或(huo)將溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)浸(jin)入溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)低于溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)zui低刻度(du)(du)(du)(du)(du)的水(shui)中,使(shi)脫(tuo)(tuo)節(jie)的水(shui)銀柱(zhu)回到溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)計(ji)(ji)的感溫(wen)(wen)(wen)泡中"。