SOURCES OF DIOXINS TO THE BALTIC SEA–IDENTIFICATION AND APPORTIONMENT USING PATTERN ANALYSIS AND RECEPTOR MODELING
Multivariate pattern analysis techniques and receptor modeling were used to trace and apportion PCDD/F sources in the Baltic Sea. The data set consisted of all tetra- to octa-chlorinated PCDD/Fs analyzed in nearly 150 samples of surface sediments. The source tracing analyses suggested that atmospheric deposition, tetrachlorophenol use and other wood related industry are responsible for the pollution. Atmospheric deposition was suggested as the most important source to offshore areas, thus supporting earlier estimates. However, spatial differences indicated a larger fraction of local/regional atmospheric sources, characterized by higher fraction of PCDFs, in the south. This was indicated by the identification of several patterns of atmospheric origin. In coastal areas, the influence of direct emission sources was larger, and among these, chlorophenol used for wood preservation and emissions from pulp/paper production and other wood related industry appeared to be most important. The historic emissions connected to processes involving chemical reactions with chlorine (e.g. pulp bleaching) were found to be of less importance.
Sundqvist K L Tysklind M Geladi P Hopke P K Wiberg K
Department of Chemistry,Ume(a) University,SE-90187 Ume(a) Sweden Unit of Biomass Technology and Chemistry,Swedish University of Agricultural Sciences,SE-90183 Ume(a) Department of Chemical and Biomolecular Engineering and Center for Air Resources Engineering and Sci
国际会议
北京
英文
1-4
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）