色谱
色譜
색보
CHINESE JOURNAL OF CHROMATOGRAPHY
2014年
8期
837-842
,共6页
梁茜茜%陈创%王卫国%李海洋
樑茜茜%陳創%王衛國%李海洋
량천천%진창%왕위국%리해양
膜萃取装置%气相色谱/微分离子迁移谱%1,4-二恶烷%氯代烃%水
膜萃取裝置%氣相色譜/微分離子遷移譜%1,4-二噁烷%氯代烴%水
막췌취장치%기상색보/미분리자천이보%1,4-이악완%록대경%수
membrane extraction device%gas chromatography/differential mobility spectrome-try(GC/DMS)%1,4-dioxane%chlorinated hydrocarbons%water
利用膜萃取-气相色谱/微分离子迁移谱(ME-GC / DMS)对水中的1,4-二恶烷污染物进行了检测。考察了射频电压、采样流速、膜渗透时间、Trap 预富集时间等参数对检测二恶烷的影响规律。结果显示:在优化条件下,二恶烷的定量线性范围为2.0~20.0μg / L,检出限为0.67μg / L。实验证明,二恶烷与5种氯代烃的混合物在 ME-GC /DMS 的二维分离谱图中得到特异性响应,增加了识别的准确性。该研究为发展现场实时监测地下水中污染物的方法提供了重要参考。
利用膜萃取-氣相色譜/微分離子遷移譜(ME-GC / DMS)對水中的1,4-二噁烷汙染物進行瞭檢測。攷察瞭射頻電壓、採樣流速、膜滲透時間、Trap 預富集時間等參數對檢測二噁烷的影響規律。結果顯示:在優化條件下,二噁烷的定量線性範圍為2.0~20.0μg / L,檢齣限為0.67μg / L。實驗證明,二噁烷與5種氯代烴的混閤物在 ME-GC /DMS 的二維分離譜圖中得到特異性響應,增加瞭識彆的準確性。該研究為髮展現場實時鑑測地下水中汙染物的方法提供瞭重要參攷。
이용막췌취-기상색보/미분리자천이보(ME-GC / DMS)대수중적1,4-이악완오염물진행료검측。고찰료사빈전압、채양류속、막삼투시간、Trap 예부집시간등삼수대검측이악완적영향규률。결과현시:재우화조건하,이악완적정량선성범위위2.0~20.0μg / L,검출한위0.67μg / L。실험증명,이악완여5충록대경적혼합물재 ME-GC /DMS 적이유분리보도중득도특이성향응,증가료식별적준학성。해연구위발전현장실시감측지하수중오염물적방법제공료중요삼고。
The method of detecting trace 1,4-dioxane in water using membrane extraction cou-pled with gas chromatography / differential mobility spectrometry( GC / DMS)was developed. The parameters including radio frequency voltage,sampling flow rate,permeation time and trapping time were optimized to 1000 V,50 mL / min,30 min and 150 s,respectively. The linear range for dioxane was obtained from 2. 0 μg / L to 20. 0 μg / L. The LOD was found to be 0. 67μg / L. The specificity towards 1,4-dioxane in the presence of five chlorinated hydrocarbons was improved by using two-dimensional GC separation with optimized DMS compensation voltage. This method paves a way for developing field-deployable sensors for real-time monitoring con-taminants in groundwater.