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CF-Ⅱ氟離子測定儀的特点与原理

发布时间：2012-05-10 点击次数：1213次

1、特點

CF--Ⅱ氟離子測定儀采用电子控温，实时控制升温电流，温度控制精确。采用管式高温炉为燃烧炉，长寿命硅碳管加热器件，外填充铝和硅酸铝保温棉以过到良好的保温性能和充分长度的恒温区。该仪器集控温、搅拌及蒸汽量控制于一体，体积小，是目前实验室理想的测氟仪器。

2、原理

煤樣在氧氣和水蒸汽混合氣流中燃燒和水解，煤中氟全部轉化爲揮發性氟化物（siF₄及HF）並定量地溶于水中。以氟離子選擇性電極爲指示電極，飽和甘汞電極爲參比電極，用標准加入法測定樣品，溶液中氟離子濃度，計算出煤中總氟量。

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