簡要描述(shu)：電極介紹
pH電(dian)(dian)極(ji)測(ce)(ce)量(liang)的(de)核心理論是(shi)能斯特(te)方(fang)程(cheng)。電(dian)(dian)位分析法所用的(de)傳感器(qi)被稱為原電(dian)(dian)池(chi)。原電(dian)(dian)池(chi)是(shi)一(yi)個(ge)系統,它的(de)作用是(shi)使化學反應(ying)能量(liang)轉成為電(dian)(dian)能。此(ci)電(dian)(dian)池(chi)的(de)電(dian)(dian)壓被稱為電(dian)(dian)動勢(EMF)。此(ci)電(dian)(dian)動勢(EMF)由二(er)個(ge)半電(dian)(dian)池(chi)構成。其中一(yi)個(ge)半電(dian)(dian)池(chi)稱作測(ce)(ce)量(liang)傳感器(qi),它的(de)電(dian)(dian)位與特(te)定的(de)離子活度有關;另一(yi)個(ge)半電(dian)(dian)池(chi)為參(can)(can)比半電(dian)(dian)池(chi),通常稱作參(can)(can)比傳感器(qi),它一(yi)般是(shi)與測(ce)(ce)量(liang)溶(rong)液相(xiang)通,并(bing)且(qie)與測(ce)(ce)量(liang)儀表相(xiang)連(lian)。