HAOAHN生活饮用水中三氯甲烷和四氯化碳自动顶空测定毛细管柱HH-5

就自来水二氧化氯消毒控制三氯甲烷形成进行了试验研究，二氧化氯预消毒替代预氯化可以降低水中的三氯甲烷，预消毒处理后形成三氯甲烷的反应受温度和反应时间影响。使用二氧化氯与氯配制的混合消毒剂消毒时，随二氧化氯含量增加，水中的三氯甲烷将明显减少。二氧化氯预处理能降低水中总有机碳(TOC)，而且使水中三氯甲烷生成潜能(THMFP)下降，表明二氧化氯可与天然有机质发生氧化反应去除部分三氯甲烷前体物，在絮凝之前投加二氧化氯对三氯甲烷生成潜能的去除率高于在絮凝之后投加二氧化氯。自来水采用二氧化氯预消毒替代液氯可以控制水中三氯甲烷的形成。

浩瀚色谱（山东）应用技术开发有限公司建立了静态顶空毛细管柱气相色谱法测定生活饮用水中三氯甲烷和四氯化碳的方法。实验结果显示:三氯甲烷和四氯化碳在其测定范围内线性关系良好,相关系数为0.998～0.997,回收率为89.0%～107.0%。该方法简便、快速、可行。

名称：毛细管柱
固定相：5%苯基-95%甲基聚硅氧烷
规格：30m*0.32mm*0.25um
型号：HH-5
应用：《GBT 5750.8-2006 生活饮用水标准检验方法 有机物指标》

An experimental study was carried out on the control of chloroform formation by chlorine dioxide disinfection in tap water. Chlorine dioxide pre-disinfection instead of pre-chlorination can reduce chloroform in water. The reaction to form chloroform after pre-disinfection is affected by temperature and reaction time. When using a mixed disinfectant prepared with chlorine dioxide and chlorine for disinfection, with the increase of chlorine dioxide content, the chloroform in the water will be significantly reduced. Chlorine dioxide pretreatment can reduce the total organic carbon (TOC) in water and reduce the chloroform production potential (THMFP) in water, indicating that chlorine dioxide can react with natural organic matter to remove part of the chloroform precursors. The removal rate of the chloroform generation potential by adding chlorine dioxide before is higher than adding chlorine dioxide after flocculation. The use of chlorine dioxide pre-disinfection to replace liquid chlorine in tap water can control the formation of chloroform in water.

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has established a static headspace capillary column gas chromatography method for the determination of chloroform and carbon tetrachloride in drinking water. The experimental results show that the linear relationship between chloroform and carbon tetrachloride is good in the determination range, the correlation coefficient is 0.998～0.997, and the recovery rate is 89.0%～107.0%. The method is simple, fast and feasible.

Name: capillary column
Stationary Phase: 5% Phenyl-95% Methylpolysiloxane
Specifications: 30m*0.32mm*0.25um
Model: HH-5
Application: "GBT 5750.8-2006 Standard Test Method for Drinking Water-Organic Matter Index"