摘要
采用先不加硫酸银,只加重铬酸钾和浓硫酸,加热0.5小时后取出,冷却5min后加入0.3g硫酸银,继续加热回流1.5小时,测定总的表观COD,经氯离子表观COD校正后测定COD的方法,测定高氯离子废水低浓度COD。该法能较准确地反映水样的COD值,且结果重复性好,无污染,成本低,是值得推广的清洁分析方法。
It uses the method that only dichromate and dense sulfuric acid, heating 0.5 hour, cooling 5 minutes and then joins 0.3g silver sulfate, goes on heating 1.5 hour, to measure the total apparent COD, rectified by the apparent COD of chloride to measure COD, to measure the low COD in high chloride water samples. This method can accurate to response the COD of water sample with high duplicate, it has no pollution and low costs, so it is a cleaning analysis and worth to be popularized.
出处
《中国环境监测》
CAS
CSCD
北大核心
2006年第2期4-6,共3页
Environmental Monitoring in China
