数显型电热板加热法在河流高锰酸盐指数应急监测中的应用研究

高锰酸盐指数常被作为地表水体受有机污染物和还原性无机物质污染程度的综合指标.采用数显型电热板加热法测定水中高锰酸盐指数,通过实验确定了加热时间和加热温度.并分别采用水浴法和电热板加热法对应急样品进行了高锰酸盐指数的测定,两种测定方法的比对研究结果表明,应急监测时采用数显型电热板加热法测定耗时更短,检测结果与国标法测定没有显著差异,是可行且有效的应急监测替代方法.

Discussion on Rapid Determination of COD Mn by Using Direct Heating Method of Electric Heating Plate

This paper determines permanganate index in water by using direct heating method of the electric heating plate. The heating time and heating temperature were determined through experiments. Comparison was done between the water bathing method and the direct heating method of the electric heating plate with experiment on emergency samples. The results suggested that the two analytical methods have no significant differences. Direct heating method of the electric heating plate is a feasible and effective of emergency monitoring.