二硫化碳萃取—气相色谱法同时测定含盐酸废水中的甲苯、邻氯甲苯、对氯甲苯和氯化苄.pdf

化工环保
2014年第34卷第6期
ENVIRONMENTAL PROTECTION OF CHEMICAL INDUSTRY
二硫化碳萃取一气相色谱法同时测定含盐酸废水
中的甲苯、邻氯甲苯、对氯甲苯和氯化苄
邵燕,张炎,何亮亮,黄春梅
(1.江苏南大环保科技有限公司,江苏南京210046;2.百育(南京)化工有限公司,江苏南京210000
[摘要]建立了二硫化碳萃取一气相色谱法同时测定含盐酸废水中甲苯、邻氯甲苯、对氯甲苯和氯化芊的方法,并应用于实际
水样的测定。采用二硫化碳萃取含盐酸废水中的甲苯、邻氯甲苯、对氯甲苯、氯化苄,待测物质经30QC3/AC20(30mx0.32
mmx0.50um)毛细管柱气相分离。采用保留时间定性,外标法定量。实验结果表明,甲苯、邻氯甲萃、对氯甲苯和氯化苄的
质量浓度在0,2~1000mgL范围内与对应的峰面积呈良好的线性关系,检出限分别为009,0.12,0.13,0.10mgL。该方法的精
密度和准确度较高,相对标准偏差小于2%,加标回收率在9.4%~101.0%之间。
关键词」气相色谱;含盐酸废水;甲苯;邻氯甲苯;对氯甲苯;氯化苄
中图分类号X132[文献标志码」A[文章编号1006-1878(2014)06-0599-04
Simultaneous Determination of Toluene o-chlorotoluene.
p-chlorotoluene and Benzyl Chloride in Hydrochloric Acid Containin
Wastewater by Carbon Disulfide Extraction-gas Chromatography
Shao Yan, Zhang Yan, He Liangliang, Huang Chunmei
(1. Jiangsu NJU Environmental Technology Co Ltd, Nanjing Jiangsu 210046, China;
2. FA and FAR(Nanjing)Chemical Co., Ltd, Nanjing Jiangsu 210000, China)
Abstract: A method for simultaneous determination of toluene, o-chlorotoluene, p-chlorotoluene
benzyl chloride in hydrochloric acid containing wastewater was established by carbon disulfide extraction-gas
chromatography, and was used to detect the actual sample. Toluene, o-chlorotoluene, p-chlorotoluene
benzyl chloride in the hydrochloric acid containing wastewater were extracted with carbon disulfide and
then separated in gaseous phase through a 30QC3/AC20 (30 m x 0.32 mm 0.50 um)capillary column
he qualitative analysis was based on retention time method, the quantitative analysis was on external
standard method. The experimental results show that the mass concentrations of toluene, o-chlorotoluene
p-chlorotoluene, benzyl chloride have a good linear relationship with the peak areas in the range of 0.2
100.0 mg/L, their detection limits are 0.09, 0.12, 0.13, 0.10 mg/L respectively. The precision and
accuracy of the method are high, the relative standard deviation is less than%, and the recovery of
standard addition is 96.4%-101.0%
Key words: gas chromatography; hydrochloric acid containing wastewater; toluene; o-chlorotoluene
p-chlorotoluene; benzyl chloride
在氯化苄的生产过程中,会产生大量的含盐大。因此,研究含盐酸废水中甲苯、邻氯甲苯、对
酸废水。该废水中含有甲苯、邻氯甲苯、对氯
甲苯和氯化苄等有机物,如不能有效检测并加以控[收稀日期】204--10:倍订日期204-08-1
制,势必会影响废水副产盐酸的品质。且这些有机
[作者简介]邵態(1982-),女,江苏省南京市人,大专,工程师
主要从事工业废水中各种有机物含量的色谱分析方法研究。电话
物具有毒性和致癌性,对环境及人体健康危害极
13776362,电邮yanl982@126.com。