关于重铬酸盐法测定化学需氧量消解时间的研究  

Study on Determination of Digestion Time of Chemical Oxygen Demand by Dichromate Method

作　　者：苏丽萍 Su Liping(Quanzhou Yongchun Environmental Monitoring Station,Quanzhou 350525,China)

机构地区：[1]泉州市永春环境监测站,福建泉州350525

出　　处：《皮革制作与环保科技》2023年第18期6-9,共4页Leather Manufacture and Environmental Technology

摘　　要：通过对重铬酸盐法测定化学需氧量的消解时间进行研究,得出采用《水质化学需氧量的测定重铬酸盐法》(HJ 828-2017)对地表水、生活污水及成分较简单的工业废水进行监测时,在其他测定条件保持不变的情况下,将消解时间由120 min调整为60 min时,所测定结果的精密度及准确度均符合方法要求。The digestion time for determination of chemical oxygen demand by dichromate method was studied,and it was concluded that when the dichromate method for Determination of Chemical Oxygen Demand of Water Quality(HJ 828-2017)was used for determination of surface water,domestic sewage and industrial wastewater with relatively simple composition,under the condition that other determination conditions remained unchanged,the digestion time was adjusted from 120 min to 60 min,and the precision and accuracy of the measured results were in line with the requirements of the method.

关 键 词：化学需氧量 重铬酸盐法 消解时间 

分 类 号：TS5[轻工技术与工程—皮革化学与工程]