岩矿测试

中文核心期刊

中国科技核心期刊

CSCD来源期刊

文章摘要
顾华,单晓锋,崔君,张强,余肖峰,朱鸽.应用连续流动分析法测定高盐地下水中的挥发酚[J].岩矿测试,2019,38(5):518-523
GU Hua,SHAN Xiao-feng,CUI Jun,ZHANG Qiang,YU Xiao-feng,ZHU Ge.Determination of Phenol in Hypersaline Groundwater by Continuous Flow Analysis Method[J].Rock and Mineral Analysis,2019,38(5):518-523.DOI:10.15898/j.cnki.11-2131/td.201902210024
应用连续流动分析法测定高盐地下水中的挥发酚
HTML   下载全文   EndNote   BibTeX   查看/发表评论  下载PDF阅读器
Determination of Phenol in Hypersaline Groundwater by Continuous Flow Analysis Method
投稿时间:2019-02-21  修订日期:2019-05-10
DOI:10.15898/j.cnki.11-2131/td.201902210024
中文关键词: 地下水  挥发酚  连续流动分析法  含盐量  硝酸盐  酸度
英文关键词: groundwater  phenol  continuous flow analysis  sality  nitrate  acity
基金项目:“上海市地面沉降及地质环境长期监测(2018)”项目
作者单位
顾华 上海市地质调查研究院, 上海 200072
国土资源部上海资源环境监督检测中心, 上海 200072 
单晓锋 上海市地质调查研究院, 上海 200072
国土资源部上海资源环境监督检测中心, 上海 200072 
崔君 上海市地质调查研究院, 上海 200072
国土资源部上海资源环境监督检测中心, 上海 200072 
张强 上海市地质调查研究院, 上海 200072
国土资源部上海资源环境监督检测中心, 上海 200072 
余肖峰 上海市地质调查研究院, 上海 200072
国土资源部上海资源环境监督检测中心, 上海 200072 
朱鸽 上海市地质调查研究院, 上海 200072
国土资源部上海资源环境监督检测中心, 上海 200072 
摘要点击次数: 647
全文下载次数: 194
中文摘要:
      应用连续流动分析法测定氯化物或硝酸盐含量高于0.4g/L的地下水样品中的挥发酚,存在较为严重的基质干扰,在线蒸馏过程中生成了大量的氯化氢和二氧化氮气体,导致冷凝后的馏出液酸性强,造成缓冲溶液失效。另外,当水中含盐量超过0.15%时,蒸馏器管路易堵塞,使该方法无法得到广泛的应用。本文采用3%磷酸二氢钾和3%柠檬酸作为蒸馏试剂,可消除20g/L氯化物和1g/L硝酸盐的干扰。同时采用50%甘油水溶液作为蒸馏试剂溶剂,能够缓解蒸馏器系统管路堵塞的问题,可以测定含盐量低于40g/L的地下水。该方法测定地下水中的挥发酚在0.002~0.100mg/L浓度范围内线性关系良好,相关系数达到0.9999,实际样品的加标回收率为95.2%~104.6%,相对标准偏差(RSD,n=6)<5%,方法检出限为0.001mg/L,适用于批量测定地下水样中的挥发酚。
英文摘要:
      BACKGROUND:Determination of phenol by the continuous flow analysis method is seriously compromised if the contents of chlorides or nitrates are greater than 0.4g/L in groundwater. Large amounts of HCl and NO2 during in situ distillation increase the acidity of product after condensation and cause the failure of buffer solution. In addition, distiller pipes can be easily blocked when the salt content is greater than 0.15% in groundwater. Current methods cannot be widely used because of these limitations.
OBJECTIVES:To establish an easy and convenient way to detect phenol, especially in groundwater samples with high salt content.
METHODS:Using 3% KH2PO4 and 3% citric acid solution as distillation solvents eliminated the interferences caused by chlorides (≤ 20g/L) and nitrates (≤ 1g/L). 50% glycerol used as the solvent of distillation reagent alleviated the pipeline blockage in the distiller. This method can be applied to determine groundwater samples with a salinity content of less than 40g/L.
RESULTS:The calibration curve showed good linearity with the correlation coefficient higher than 0.9999 in the range of 0.002-0.100mg/L. The recoveries obtained by adding phenol standards to samples ranged from 95.2% to 104.6%. The relative standard deviation (n=6) was less than 5%. The method detection limit was 0.001mg/L.
CONCLUSIONS:The method is suitable for the determination of phenol in high salt groundwater samples.
主管单位: 中国科学技术协会
主办单位: 中国地质学会岩矿测试技术专业委员会
国家地质实验测试中心

通讯地址:北京市西城区百万庄大街26号

工作邮箱:ykcs_zazhi@163.comykcs@cags.ac.cn

办公电话:010-68999562