Relationships between organic matter, black carbon and persistent organic pollutants in European background soils: Implications for sources and environmental fate

详细信息    查看全文

• 作者：Jae Jak Nam ; Orjan Gustafsson ; Perihan Kurt-Karakus ; Knut Breivik ; Eiliv Steinnes ; Kevin C. Jones
• 关键词：Persistent organic pollutants ; Soil organic matter ; Black carbon ; Environmental fate
• 刊名：Environmental Pollution
• 出版年：2008
• 出版时间：December 2008
• 年：2008
• 卷：156
• 期：3
• 页码：809-817
• 全文大小：470 K

文摘

Black carbon (BC) and total organic carbon (TOC) contents of UK and Norwegian background soils were determined and their relationships with persistent organic pollutants (HCB, PAHs, PCBs, co-planar PCBs, PBDEs and PCDD/Fs) investigated by correlation and regression analyses, to assess their roles in influencing compound partitioning/retention in soils. The 52 soils used were high in TOC (range 54–460 mg/g (mean 256)), while BC only constituted 0.24–1.8 % (0.88 % ) of the TOC. TOC was strongly correlated (p < 0.001) with HCB, PCBs, co-PCBs and PBDEs, but less so with PCDD/Fs (p < 0.05) and PAHs. TOC explained variability in soil content, as follows: HCB, 80 % ; PCBs, 44 % ; co-PCBs, 40 % ; PBDEs, 27 % . BC also gave statistically significant correlations with PBDEs (p < 0.001), co-PCBs (p < 0.01) and PCBs, HCB, PCDD/F (p < 0.05); TOC and BC were correlated with each other (p < 0.01). Inferences are made about possible combustion-derived sources, atmospheric transport and air–surface exchange processes for these compounds.