引用本文:陈林昌,许峰,王飞,胡雅琴,康涛.自动顶空进样气相色谱法测定饮用水水源中低质量浓度苯系物[J].环境监控与预警,2023,15(3):54-57
CHEN Linchang,XU Feng,WANG Fei,HU Yaqin,KANG Tao.Determination of Low Concentration Benzene Homologues in Drinking Water Source by GC with Automatic Headspace Injection[J].Environmental Monitoring and Forewarning,2023,15(3):54-57
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 2497次   下载 575 本文二维码信息
码上扫一扫!
分享到: 微信 更多
自动顶空进样气相色谱法测定饮用水水源中低质量浓度苯系物
陈林昌,许峰,王飞,胡雅琴,康涛1,2,3
1.安徽省滁州生态环境监测中心,安徽 滁州 239000;2.滁州市生态环境局,安徽 滁州 239000;3.安徽省生态环境监测中心,安徽 合肥 230071
摘要:
以《水质 苯系物的测定 顶空/气相色谱法》(HJ 1067—2019)为基础,通过选取最优的顶空加热平衡温度和优化色谱柱升温程序,建立了自动顶空进样气相色谱法测定饮用水水源中低质量浓度苯系物的方法。该方法能够实现苯系物组分分离清晰,有效提高了检测效率。采用低质量浓度的苯系物系列溶液绘制校准曲线,在0.10~2.00 μg/mL范围内获得较好的线性关系,相关系数(r)为 0.999 4~0.999 9,检出限为0.001~0.002 μg/mL,相对标准偏差为1.5%~4.5%,加标回收率为880%~980%。该方法能够满足对饮用水水源中低质量浓度苯系物准确、高效的测定要求。
关键词:  自动顶空进样  饮用水  低浓度  苯系物  气相色谱法
DOI:
分类号:X832
基金项目:滁州市农业与社会发展类课题:沙河集水库饮用水安全评估体系的构建及应用(2021ZN004)
Determination of Low Concentration Benzene Homologues in Drinking Water Source by GC with Automatic Headspace Injection
CHEN Linchang,XU Feng,WANG Fei,HU Yaqin,KANG Tao1,2,3
1. Ecological Environment Monitoring Center of Chuzhou Anhui, Chuzhou, Anhui 239000,China;2. Chuzhou Ecological Environment Bureau, Chuzhou, Anhui 239000, China;3. Ecological Environment Monitoring Center of Anhui, Hefei, Anhui 230071, China
Abstract:
Based on the “Determination of Benzene Related Compounds in Water Quality Headspace/Gas Chromatography Method” (HJ 1067—2019), by selecting the optimal headspace equilibrium temperature and optimizing the chromatographic temperature program, the baseline separation of eight components of benzene homologues was obtained, which effectively improves the detection efficiency. At the same time, the low concentration is used as the calibration point of the curve, and a good linear relationship was obtained at 0.10~2.00μg/mL. The correlation coefficients was between 0.9994 and 0.9999, the detection limits was 0.001~0.002μg/mL,the relative standard deviation ranged from 1.5% to 4.5%, and the recovery rates of standard addition were 88.0%~98.0%. It meets the requirements of accurate and efficient determination of low concentration benzene homologues in drinking water sources.
Key words:  Automatic headspace injection  Drinking water  Low concentration  Benzene homologues  GC