定氮儀產(chǎn)品及廠家
化學(xué)發(fā)光定氮儀采用氧化裂解一化學(xué)發(fā)光的原理。當(dāng)樣品被引入高溫裂解反應(yīng)室，在此與來自臭氧發(fā)生器的o3發(fā)生反應(yīng)產(chǎn)生激發(fā)態(tài)的so2＊，當(dāng)so2＊返回到基態(tài)時，發(fā)出光子，發(fā)出的光由光電倍增管接收并由微電流放大器放大，數(shù)據(jù)處理系統(tǒng)轉(zhuǎn)換顯示出于發(fā)光強(qiáng)度成正比的信號，通過測量化學(xué)發(fā)光的強(qiáng)度即可求出樣品的總氮含量。
更新時間:2025-06-06
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