植物油過(guò)氧化值測(cè)定儀產(chǎn)品及廠家
th-2001h型化學(xué)發(fā)光法氮氧化物分析儀基本工作原理為：no和o3發(fā)生反應(yīng)生成帶有能量的no2，帶有能量的no2釋放能量時(shí)產(chǎn)生特定波長(zhǎng)的熒光，這種熒光的強(qiáng)度與no的濃度成線性關(guān)系，光電管將光信號(hào)轉(zhuǎn)變成電信號(hào)，測(cè)出no的濃度。樣氣檢測(cè)方法為：樣氣中的nox進(jìn)入儀器分成二路，一路樣氣進(jìn)入反應(yīng)室，樣氣中no與o3發(fā)生反應(yīng)，測(cè)出no的濃度，另一路樣氣進(jìn)入轉(zhuǎn)換爐將樣氣中的no2轉(zhuǎn)換成no，再進(jìn)入反應(yīng)室與o3發(fā)生反應(yīng)，測(cè)出的就是no2+no=nox，用nox濃度減去no濃度就是 no2的濃度。
更新時(shí)間:2025-08-30
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