摘要
采用液液萃取-气相色谱-质谱法同时测定环境水体中的24种半挥发性有机物。水样经二氯甲烷萃取，萃取液经浓缩定容后在DB-5MS毛细管色谱柱上分离，质谱中选择电喷雾离子源-选择离子监测模式，以菲-D10为内标物进行定量。24种化合物的质量浓度在一定范围内与其峰面积呈线性关系，检出限为0．03～0．28μg·L-1。加标回收率在70．1％～128％之间，测定值的相对标准偏差（n=6）小于6％。实际样品分析结果表明，某地地表水和化工区水样中均检出硝基苯类、氯代苯酚类、酞酸酯类等化合物。
The method of GC-MS combined with liquid-liquid extraction was used for the determinaiton of on of 2 4 semi-volatile organic compounds（ SVOCs） in environmental water. The sample was extracted with dichloromethane. The extracted solution was concentrated and re-dissolved and then separated on a DB-5 MS capillary column. EI-SIM was adopted in MS. The linear relationship was found between the peak area and the mass concentration of the 2 4 SVOCs was in a certain range,with detection limits in the range of 0. 0 3- 0. 2 8 μg·L- 1. The recovery rates measured by standard addition method were in the range of 7 0. 1 %- 1 2 8 %,with RSD was less than 6 %. The actual sample analysis results showed that those SVOCs such as the nitrochlorobenzenes,chlorophenols and phthalate esters were detected in the water samples of surface water and chemical wastewater somewhere.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2015年第6期782-786,共5页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
