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北极星环保网
6 年
5种COD测定方法 快速又简单(附常见问题)
经典标准方法,再现性好,准确可靠。 不足之处:回流装置占的实验空间大,水、电消耗较大,试剂用量大,操作不便,难以大批量快速测定。 测定原理:在硫酸酸性介质中,以重铬酸钾为氧化剂,硫酸银为催化剂,硫酸汞为氯离子的掩蔽剂,消解反应液硫酸 ...
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