环境监控与预警
環境鑑控與預警
배경감공여예경
Environmental Monitoring and Forewarning
2015年
5期
42-44
,共3页
废水%总氰化物%测定干扰
廢水%總氰化物%測定榦擾
폐수%총청화물%측정간우
Wastewater%Total cyanide%Measurement interference
为解决测定受有机物污染的城镇污水原水中氰化物含量过程中出现的总氰化物未检出，进出水总氰化物浓度倒大等问题，采取增加石油醚（90～120℃）萃取或银盐沉淀预处理的步骤，实现对干扰的消除，方法相对标准偏差在4．8％～26．5％之间，加标回收率在84％～90％之间。
為解決測定受有機物汙染的城鎮汙水原水中氰化物含量過程中齣現的總氰化物未檢齣，進齣水總氰化物濃度倒大等問題，採取增加石油醚（90～120℃）萃取或銀鹽沉澱預處理的步驟，實現對榦擾的消除，方法相對標準偏差在4．8％～26．5％之間，加標迴收率在84％～90％之間。
위해결측정수유궤물오염적성진오수원수중청화물함량과정중출현적총청화물미검출，진출수총청화물농도도대등문제，채취증가석유미（90～120℃）췌취혹은염침정예처리적보취，실현대간우적소제，방법상대표준편차재4．8％～26．5％지간，가표회수솔재84％～90％지간。
It was found that during the determination of cyanide in urban wastewater and raw water that contained organic pollutants, total cyanide was not detected,and the concentration of total cyanide in effluent was higher than that of the influent.In order to solve the problem and eliminate the interferences,petroleum ether (90~120 ℃) extraction or silver precipitation were used as the pre-treatment methods.The results showed that the relative standard deviation was in the range of 4.8%~26.5%,and the recovery was in the range of 84%~90%.
