摘要
采用二氯甲烷液-液萃取预处理,气相色谱-质谱谱库检索与标准品色谱保留时间相结合定性,确定了苯酚丙酮废水中的8种主要芳香族有机污染物.建立了各种物质同时测定的气相色谱外标法定量的分析方法.该方法分析时间短,各组分线性相关系数在0.995 1～0.999 9,各组分的检出限均＜0.05 mg/L,5次测定的相对标准偏差均＜3％,除2-苯基1,2-丙二醇外,各物质的回收率均大于90％.
The major aromatic pollutants in phenol-acetone production wastewater were determined by gas chromatography-mass spectrometry using chromatographic retention of the standards and library search..A quantitative methods was established by gas chromatography-FID detector while the sample is pretreated by liquid-liquid extraction using dichloromethane as the extractant.The correlation coefficient of the calibrations curves were 0.995 1 to 0.999 9.the detection limit and the relative standard deviations for all pollutants were less than 0.05 mg/L and 3％.The recovery percentages were more than 90％ except for 2-phenyl-1,2-propanediol.
出处
《化工科技》
CAS
2013年第4期35-38,共4页
Science & Technology in Chemical Industry
