Estimating dry deposition and gas/particle partition coefficients of neutral poly-/perfluoroalkyl substances in northern German coast
Estimating dry deposition and gas/particle partition coefficients of neutral poly-/perfluoroalkyl substances in northern German coast
复制标题
估算德国北部海岸中性聚/全氟烷基物质的干沉积和气体/颗粒分配系数
DOI：
10.1016/j.envpol.2015.03.029
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发表时间：
2015
影响因子：
8.9
通讯作者：
Ralf Ebinghaus
中科院分区：
文献类型：
--
作者：
Zhen Wang;Zhiyong Xie;Axel Möller;Wenying Mi;Hendrik Wolschke;Ralf Ebinghaus
采用多参数线性自由能关系（PP-LFERs）估算了德国北方海岸Büsum 12种中性多氟烷基物质（PFASs）的干沉降通量，并预测了其气粒分配系数。12个PFAS采样期间的气体沉降通量、颗粒沉降通量和总（气体+颗粒）通量分别为1088 ± 611、189 ± 75和1277 ± 627 pg/（m2 d）。PFASs在海洋生态系统中的沉积过程中，其气体沉积起着关键作用。敏感性分析表明，风速是最敏感的参数的气体沉积通量。PFASs的气粒分配实验数据与PP-LFERs模型预测的分配系数吻合较好（在1个对数单位内），表明该模型能够可靠地预测大气中性PFASs的气粒分配行为.
Dry deposition fluxes of 12 neutral poly-/perfluoroalkyl substances (PFASs) were estimated at Büsum located in northern German coast, and their gas/particle partition coefficients were predicted by employing the polyparameter linear free energy relationships (PP-LFERs). The gas deposition flux, particle deposition flux and total (gas + particle) flux of the 12 PFASs during sampling periods were 1088 ± 611, 189 ± 75 and 1277 ± 627 pg/(m2d), respectively. The gas deposition of PFASs played a key role during deposition to marine ecosystem. Sensitivity analysis showed that wind speed was the most sensitive parameter for gas deposition fluxes. Good agreements (within 1 log unit) were observed between the measured gas/particle partitioning data of PFASs and the predicted partition coefficients using PP-LFERs, indicating the model can reliably predict the gas/particle partitioning behaviors of atmospheric neutral PFASs.