吹脱法处理DMF废水的检测影响因素研究

Study on the influencing factors of DMF wastewater treatment by stripping method

研究了吹脱法处理DMF废水的检测影响因素。结果表明,5 mL DMF标准溶液(100 mg/L)中添加二甲胺,0~142 mg二甲胺添加量范围内,吸光度与二甲胺添加量呈现良好的线性关系,其线性方程为y=-0.0007 x+0.3112,相关系数(r)为0.9700。二甲胺添加量为178 mg时,产生红色沉淀。去除二甲胺影响后在不同加标水平下回收率为94.7%~97.9%,相对标准差(RSD)为3.79%~7.70%。

The factors influencing the detection of DMF wastewater by blow-off method were studied.The result showed that adding dimethylamine to 5 mL DMF standard solution(100 mg/L),the range of 0~142 mg dimethylamine added,the absorbance and dimethylamine addition showed a good linear relationship,the linear equation is y=-0.0007 x+0.3112,correlation coefficient(r)is 0.9700.When the amount of dimethylamine added was 178 mg,a red precipitate was produced.After removing the influence of dimethylamine,the recovery rate was 94.7%~97.9%and the relative standard deviation(RSD)was 3.79%~7.70%.