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。
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.
参考文献
| [1] | NIST Standard Reference Database Number 69.【2014-04-23】. http://webbook.nist.gov/chemistry/,2014. |
| [2] | Wells G,Schroth W,Brauch H,et al. Clin Nephrol,2009, 71(6):708,2009. |
| [3] | Grimmett P E,Munch J W. J Chromatogr Sci,2009,47(1):31,2009. |
| [4] | Draper W M,Dhoot J S,Remoy J W,et al. Analyst,2000, 125(8):1403,2000. |
| [5] | Isaacson C,Mohr T K G,Field J A. Environ Sci Technol, 2006,40(23):7305,2006. |
| [6] | Epstein P S,Mauer T,Wagner M,et al. Anal Chem,1987, 59(15):1987,1987. |
| [7] | Kawata K,Ibaraki T,Tanabe A,et al. J Chromatogr A, 2001,911(1):75,2001. |
| [8] | Shirey R E,Linton C M. J Chromatogr Sci,2006,44(7):444,2006. |
| [9] | Shin H-S,Lim H-H. Chromatographia,2011,73(11/12):1233,2011. |
| [10] | Jochmann M A,Kmiecik M P,Schmidt T C. J Chromatogr A,2006,1115(1):208,2006. |
| [11] | Du Y,Zhang W,Whitten W,et al. Anal Chem,2010,82 (10):4089,2010. |
| [12] | Shvartsburg A A. Differential Ion Mobility Spectrometry:Nonlinear Ion Transport and Fundamentals of FAIMS. Boca Raton,FL:CRC Press,2009,2009. |
| [13] | Zhang J,Li L F,Guo D P,et al. Chinese Journal of Analyt-ical Chemistry(张洁,李灵锋,郭大鹏,等. 分析化学), 2013,41(7):986,2013. |
| [14] | Wang J C,Xiong L,Zhang H J,et al. Chinese Journal of Chromatography(王金成,熊力,张海军,等. 色谱),2013, 31(2):139,2013. |
| [15] | Telgheder U,Malinowski M,Jochmann M A. Int J Ion Mo-bil Spec,2009,12(4):123,2009. |
| [16] | Li M,Conlon P,Fiorenza S,et al. Ground Water Monit Remediat,2011,31:70,2011. |
| [17] | Nakamura S,Daishima S. Anal Chim Acta,2005,548:79,2005. |
| [18] | Kennedy R A,Mayhew C A,Thomas R,et al. Int J Mass Spectrom,2003,223/224:627,2003. |
| [19] | Nicoletti A,Paradisi C,Scorrano G. Rapid Commun Mass Spectrom,2001,15(20):1904,2001. |
| [20] | Mayhew C A,Thomas R,Watts P. Int J Mass Spectrom, 2003,223/224:91,2003. |
| [21] | Dotremont C,Goethaert S,Vandecasteele C. Desalination, 1993,91(2):177,1993. |
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