Relaxed eddy accumulation, a new technique for measuring emission and deposition fluxes of volatile organic compounds by capillary gas chromatography and mass spectrometry
Relaxed eddy accumulation, a new technique for measuring emission and deposition fluxes of volatile organic compounds by capillary gas chromatography and mass spectrometry
复制标题
DOI：
10.1016/s0021-9673(02)01731-4
复制
发表时间：
2003-01-24
影响因子：
4.1
通讯作者：
Valentini, R
中科院分区：
文献类型：
--
作者：
Ciccioli, P;Brancaleoni, E;Valentini, R
本文将介绍一种新的松弛涡积系统在用色谱技术测定挥发性有机化合物（VOCs）排放和沉积通量方面所提供的可能性。该系统，特别是设计来限制采样文物，使用吸附阱填充固体吸附剂作为水库的挥发性有机化合物收集。富集的化合物进行了分析，通过毛细管气相色谱和积极的鉴定和定量洗脱的化合物通过质谱检测。该方法已被用来量化的排放和沉积的生物和人为的挥发性有机化合物在地中海森林生态系统位于意大利中部。将首次报告人为和生物源VOCs的每日和季节趋势。将测试单萜通量与基于主要植被物种挥发性有机化合物排放知识的预测的一致性。数据已被用来开发一种新的算法来预测从森林生态系统的生物排放的季节性。(C)2002 Elsevier Science B.V.保留所有权利。
The possibility afforded by a new relaxed eddy accumulation system in the determination of emission and deposition fluxes of volatile organic compounds (VOCs) by chromatographic techniques will be presented. The system, especially designed to limit sampling artifacts, uses adsorption traps filled with solid sorbents as reservoirs for VOC collection. Enriched compounds were analyzed by capillary GC and positive identification and quantification of eluted compounds was achieved by mass-spectrometric detection. The method has been used to quantify the emission and deposition of both biogenic and anthropogenic VOCs over a Mediterranean forest ecosystem located in Central Italy. For the first time, both daily and seasonal trends of anthropogenic and biogenic VOCs will be reported. The consistency of monoterpene fluxes with predictions based on the knowledge of VOC emission from the dominant vegetation species will be tested. Data have been used to develop a novel algorithm to predict the seasonality of biogenic emission from the forest ecosystem. (C) 2002 Elsevier Science B.V. All rights reserved.