微波密封消解快速测定化学需氧量

Determining COD Cr by Sealed Elimination Reaction with Microwave

用微波密封快速法测定ＣＯＤＣｒ并与国标回流法比较和进行抗干扰实验，结果表明：两种方法的线性相关系数ｒ００１，８＞０９９９，且微波密封快速测定法消解时间（０２５ｈ）比国际法（２ｈ）短。建议尽快将微波密封快速法纳入国家标准。

The sealed elimination reaction with microwave(SERM) was used to detect chemical oxygen demand (COD Cr ) of polluted water ,and compared with national standard reflux method and went through anti disturbing test .The result showed that the two methods had a high linear correlation coefficient (r 0 01,8 >0 999), and the eliminating time of SERM (0 25 h) was less than reflux method (2 h). It is suggested that the method should be accepted and involved in the national standard.