焦化废水中痕量苯并(a)芘的固相萃取和GC-MS检测方法

侯嫔; 张瑜; 彭莲; 赵俊慧; 卜庆伟; 王建兵; 贲伟伟; 强志民

doi:DOI:10.13205/j.hjgc.202207023

焦化废水中痕量苯并(a)芘的固相萃取和GC-MS检测方法

doi: DOI:10.13205/j.hjgc.202207023

1. 中国矿业大学(北京) 化学与环境工程学院, 北京 100083;
2. 中国科学院生态环境研究中心饮用水科学与技术重点实验室, 北京 100085

基金项目:

国家重点研发计划(2018YFC0406404)

中科院开放基金(18K05KLDWST)

中央高校越崎青年学者"资助计划"(2020QN09)

详细信息

作者简介:
侯嫔(1985-),女,副教授,主要研究方向为水污染控制技术。phou.beijing@cumtb.edu.cn

通讯作者:
侯嫔(1985-),女,副教授,主要研究方向为水污染控制技术。phou.beijing@cumtb.edu.cn

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- 文章访问数: 146
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- 被引次数: 0
出版历程
- 收稿日期: 2021-03-16
- 网络出版日期: 2022-09-02

A DETECTION METHOD FOR TRACE BENZO (a) PYRENE IN COKING WASTEWATER BY SOLID-PHASE EXTRACTION AND GC-MS ANALYSIS

1. School of Chemical & Environmental Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China;
2. Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

摘要

摘要: 基于固相萃取(SPE)和气相色谱/质谱联用技术(GC-MS),建立了一种焦化废水中痕量苯并(a)芘(BaP)的定量分析方法。BaP水样添加甲醇改性后经SPE富集净化、二氯甲烷洗脱、氮吹浓缩、二氯甲烷或乙腈定容后采用GC-MS进行定量分析。结果表明:在优化的样品前处理和分析条件下,BaP标准曲线的线性相关系数R²>0.99,方法回收率为79.6%~85.5%,方法检出限和定量限分别为4.33 ng/L和14.45 ng/L。该方法应用于内蒙古某焦化厂二级生化出水加标样品中BaP的测定,得到BaP的回收率为83.3%~89.3%,表明其灵敏度高、选择性好,适用于焦化废水中痕量BaP的定量检测。
- 苯并(a)芘 /
- 固相萃取 /
- 气相色谱-质谱 /
- 焦化废水 /
- 定量检测
Abstract: Based on solid phase extraction (SPE) and gas chromatography/mass spectrometry (GC-MS),the study herein established a quantitative analysis method for trace benzo (a) pyrene (BaP) in coking wastewater.The BaP-containing water samples were enriched and purified by SPE after being modified by methanol,then eluted by dichloromethane,concentrated by nitrogen blowing,and quantified by GC-MS after constant volume of dichloromethane or acetonitrile.The results showed that,after the optimization of sample pretreatment and under the analysis conditions,the linear correlation coefficient (R²) of BaP standard curve was greater than 0.99,the recovery rate was in the range of 79.6%~85.5%,the detection limit and quantitative limit were 4.33 ng/L and 14.45 ng/L,respectively.This method was then applied to the determination of BaP in the secondary effluent of a coking plant in Inner Mongolia.The recoveries of spiked BaP samples were in the range of 83.3%~89.3%,indicating that this method presented high sensitivity and good selectivity.It is suitable for the quantitative determination of trace BaP in coking wastewater.
- benzo (a) pyrene /
- solid phase extraction /
- gas chromatography-mass spectrometry /
- coking wastewater /
- quantitative testing

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