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    2021.03.04
    什么是cod检测仪
    什么是cod检测仪COD检测仪就是检测水质化学需氧量COD含量的一种水质检测仪器,根据国标检测规定的要求,一般有重铬酸钾检测方法和高锰酸钾检测方法。
     
    COD的国家标准方法是采用回流消解滴定法,该方法消解时间长(2小时)、耗能大、试剂成本高、检测效率低,是常困扰实际操作者的主要因素。现COD检测仪更多执行快速消解分光光度法来检测COD,其检测原理为重铬酸钾溶液在强酸的介质中,以硫酸银作为催化剂,经高温消解后,用分光光度法测定COD值。当试样中COD值为100mg/L1000mg/L,600nm±20nm波长处测定重铬酸钾被还原产生的Cr3+的吸光度,试样中COD值于Cr3+的吸光度的增加值成正比例关系,将三价铬Cr3+的吸光度换算成试样COD的值。该仪器是根据我国水质情况及国家标准水质分光光度法要求而研发的一款同时具备高、低两个量程的智能型COD测定仪。
     
    COD检测仪从类型上来分的话,主要分为便携式COD检测仪、台式COD检测仪和在线COD检测仪三大类,选用时应当根据自身需求及现场工况情况来进行划分。
     
     
    赢润环保研发、生产的台式水质化学需氧量COD测定仪ERUN-ST-COD700是利用密封催化消解,然后进行比色法测量。仪器采用先进的冷光源、窄带干涉技术及微电脑自动处理数据,广泛应用于环境监测、污水处理及大专院校、科研单位等部门。
     
    以上就是关于什么是cod检测仪的介绍,相关阅读推荐:《COD在线水质分析仪表选型》、《COD是什么意思》、《COD
    在线分析仪的工作原理》。
     
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