Liquid core waveguide-based optical spectrometry for field estimation of dissolved BTEX compounds in groundwater - A feasibility study
Liquid core waveguide-based optical spectrometry for field estimation of dissolved BTEX compounds in groundwater - A feasibility study
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DOI：
10.1016/s0003-2670(03)00423-9
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发表时间：
2003-06-06
影响因子：
6.2
通讯作者：
Dasgupta, PK
中科院分区：
文献类型：
--
作者：
Larsson, H;Dasgupta, PK
检查了液芯波导 (LCW) 系统作为水中苯、甲苯、乙苯、二甲苯 (BTEX) 等化合物的哨兵监测器的实用性。制造了基于 Teflon AF 2400 管的适用于长光程吸收光谱的蒸汽渗透 LCW。使用基于光纤的闪光灯-光电二极管阵列 (PDA) 组合以及己烷作为波导芯中的溶剂进行近紫外多波长光谱分析。使用多组分校准，在 10 分钟的采样周期后，可以对混合物中的亚 mg l(-1) 水平的苯和甲苯进行定量，精确度可达 6+/-5%。 (C) 2003 Elsevier Science B.V. 保留所有权利。
The utility of a liquid core waveguide (LCW) system for acting as a sentry monitor for compounds such as benzene, toluene, ethylbenzene, xylene (BTEX) in water was examined. A vapor-permeable LCW suitable for long path length absorbance spectroscopy based on a Teflon AF 2400 tube was fabricated. Multiwavelength spectroscopy in the near-UV was carried out using a fiber optic-based flashlamp-photodiode array (PDA) combination with hexane as the solvent in the waveguide core. Using multicomponent calibration, quantitation of benzene and toluene accurate to 6+/-5% could be conducted at sub-mg l(-1) levels in mixtures after a sampling period of 10 min. (C) 2003 Elsevier Science B.V. All rights reserved.