浩瀚色譜（山東）應用技術開發(fā)有限公司建立自動頂空氣相色譜法測定飲用水中三氯甲烷和四氯化碳的方法。方法:飲用水樣在頂空自動進樣裝置上加熱,平衡后進樣,經(jīng)15%DC-550/Chromosorb W AW填充柱分離,微池電子捕獲檢測器檢測。結果:三氯甲烷在0μg/L～33.92μg/L濃度范圍、四氯化碳在0μg/L～1.60μg/L濃度范圍內(nèi)呈良好線性關系,其相關系數(shù)分別為0.9998和0.9997,三氯甲烷的最低檢出濃度為0.06μg/L、四氯化碳的最低檢出濃度為0.01μg/L,回收率為92.9%～105.0%,相對標準偏差為0.77%～2.28%。結論:該方法操作簡便、靈敏、準確、重現(xiàn)性好,適用于飲用水中三氯甲烷和四氯化碳的測定。
名稱：填充柱
型號：15%DC-550/Chromosorb W AW填充柱
規(guī)格：2m*3mm
最高使用溫度：220°C
貨號：20230223001
Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. has established an automatic headspace gas chromatography method for the determination of chloroform and carbon tetrachloride in drinking water. Methods: The drinking water sample was heated on the headspace automatic sampling device, balanced and injected, separated by a 15% DC-550/Chromosorb W AW packed column, and detected by a microcell electron capture detector. Result: Trichloromethane at 0 μ g/L～33.92 μ G/L concentration range, carbon tetrachloride at 0 μ g/L～1.60 μ There is a good linear relationship within the range of g/L concentration, and its correlation coefficients are 0.9998 and 0.9997 respectively, and the lowest detectable concentration of trichloromethane is 0.06 μ G/L, the lowest detectable concentration of carbon tetrachloride is 0.01 μ G/L, the recovery rate is 92.9%~105.0%, and the relative standard deviation is 0.77%~2.28%. Conclusion: The method is simple, sensitive, accurate and reproducible, and suitable for the determination of chloroform and carbon tetrachloride in drinking water.
Name: Filled Column
Model: 15% DC-550/Chromosorb W AW filled column
Specification: 2m * 3mm
Maximum service temperature: 220 ° C
Article No.: 20230223001
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