Empa, Swiss Federal Laboratories for Materials Testing and Research, Laboratory for Analytical Chemistry, Uberlandstrasse 129, CH-8600 Dübendorf, Switzerland.
Environ Pollut. 2009 Dec;157(12):3218-24. doi: 10.1016/j.envpol.2009.06.033. Epub 2009 Jul 24.
Conifer needles are used for the monitoring of atmospheric persistent organic pollutants. The objective of the present study was to develop a method for the detection of airborne chlorinated paraffins (CPs) using spruce needles as a passive sampler. The method is based on liquid extraction of the cuticular wax layer followed by chromatographic fractionation and detection of CPs using two different GCMS techniques. Total CP concentrations (sum of short (SCCP), medium (MCCP) and long chain CPs (LCCP)) were determined by EI-MS/MS. SCCP and MCCP levels as well as congener group patterns (n-alkane chain length, chlorine content) could be evaluated using ECNI-LRMS. For the first time, data on environmental airborne CPs on spruce needles taken within the Monitoring Network in the Alpine Region for Persistent and other Organic Pollutants (MONARPOP) are presented providing evidence that spruce needles are a suitable passive sampling system for the monitoring of atmospheric CPs.
针叶用于监测大气持久性有机污染物。本研究的目的是开发一种使用云杉针作为被动采样器来检测空气中氯化石蜡 (CPs) 的方法。该方法基于对表皮蜡层进行液液萃取，然后进行色谱分离，并使用两种不同的 GC-MS 技术检测 CPs。总 CP 浓度（短链 (SCCP)、中链 (MCCP) 和长链 CPs (LCCP) 的总和）通过 EI-MS/MS 确定。使用 ECNI-LRMS 可以评估 SCCP 和 MCCP 水平以及同系物组模式（正烷烃链长、氯含量）。首次提供了在阿尔卑斯地区持久性和其他有机污染物监测网络（MONARPOP）内采集的云杉针上环境空气 CPs 的数据，证明了云杉针是监测大气 CPs 的一种合适的被动采样系统。
