CAJ | 학술논문

建立在线蒸馏–连续流动分析仪检测含油废水中氰化物的分析方法。水样在pH＞12的碱性条件下，以正己烷为萃取溶剂两次萃取净化，去除废水中的油类干扰物。氰化物的质量浓度在0.005～0.500 mg／L范围内与响应峰高呈良好的线性，线性相关系数大于0.999，检出限为0.0009 mg／L；对水样进行4个质量浓度水平的加标回收试验，回收率在85.0%～110.0%之间，测定结果的相对标准偏差为2.3%～5.6%(n=6)。该方法样品前处理简单、重现性好、检出限低，适用于含油废水中氰化物的测定。
건립재선증류–련속류동분석의검측함유폐수중청화물적분석방법。수양재pH＞12적감성조건하，이정기완위췌취용제량차췌취정화，거제폐수중적유류간우물。청화물적질량농도재0.005～0.500 mg／L범위내여향응봉고정량호적선성，선성상관계수대우0.999，검출한위0.0009 mg／L；대수양진행4개질량농도수평적가표회수시험，회수솔재85.0%～110.0%지간，측정결과적상대표준편차위2.3%～5.6%(n=6)。해방법양품전처리간단、중현성호、검출한저，괄용우함유폐수중청화물적측정。
The distillation on-line continuous flow spectrophotometric method for the determination of cyanide in oily wastewater was established. Under the condition of pH>12,the wastewater samples were extracted with hexane twice and cyanide from aqueous phase was measured by continuous flow analyzer. The mass concentration of cyanide was linear with corresponding peak height in the range of 0.005–0.500 mg/L,the correlation coefficient was more than 0.999. The detection limit of the method (LOD) was 0.000 9 mg/L. The recoveries of the target compound ranged from 85.0%to 110.0%and the relative standard deviations was 2.3%–5.6%(n=6). The method has good reproducibility, lower detection limit, the pretreatment is simple,so it is suitable for the determination of cyanide in oily wastewater.