以硫酸锰作催化剂无汞快速测定COD

Rapid Determination of COD Without Mercury with The Catalyzer of Manganese Sulfate

在硫酸、磷酸混合液中以MnSO4作催化剂无汞快速测定水的化学需氧量(COD)。通过实验,该法的最佳测定条件为:MnSO4 0.2 g,H2SO4-H3PO4 20 mL(H2SO4∶H3PO4= 5∶1体积比),回流时间15 min。

It is reported that COD is determined rapidly with the catalyzer of manganese sulfate in the mixture of sulfuric acid and phosphoric acid. Through experiments,the best determining conditions of this method are 0.2 g MnSO4,20 mL H2SO4-H3PO4,(H2SO4∶H3PO4 = 5∶1)and circumfluence time 15 min.