Inside-sediment partitioning of PAH, PCB and organochlorine compounds and inferences on sampling and normalization methods
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In: Environmental Pollution, Vol. 159, No. 4, 04.2011, p. 924-931.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Inside-sediment partitioning of PAH, PCB and organochlorine compounds and inferences on sampling and normalization methods
AU - Opel, Oliver
AU - Palm, Wolf-Ulrich
AU - Steffen, Dieter
AU - Ruck, Wolfgang
N1 - Issue 4, April 2011
PY - 2011/4
Y1 - 2011/4
N2 - Comparability of sediment analyses for semivolatile organic substances is still low. Neither screening of the sediments nor organic-carbon based normalization is sufficient to obtain comparable results. We are showing the interdependency of grain-size effects with inside-sediment organic-matter distribution for PAH, PCB and organochlorine compounds. Surface sediment samples collected by Van-Veen grab were sieved and analyzed for 16 PAH, 6 PCB and 18 organochlorine pesticides (OCP) as well as organic-matter content. Since bulk concentrations are influenced by grain-size effects themselves, we used a novel normalization method based on the sum of concentrations in the separate grain-size fractions of the sediments. By calculating relative normalized concentrations, it was possible to clearly show underlying mechanisms throughout a heterogeneous set of samples. Furthermore, we were able to show that, for comparability, screening at <125 μm is best suited and can be further improved by additional organic-carbon normalization.
AB - Comparability of sediment analyses for semivolatile organic substances is still low. Neither screening of the sediments nor organic-carbon based normalization is sufficient to obtain comparable results. We are showing the interdependency of grain-size effects with inside-sediment organic-matter distribution for PAH, PCB and organochlorine compounds. Surface sediment samples collected by Van-Veen grab were sieved and analyzed for 16 PAH, 6 PCB and 18 organochlorine pesticides (OCP) as well as organic-matter content. Since bulk concentrations are influenced by grain-size effects themselves, we used a novel normalization method based on the sum of concentrations in the separate grain-size fractions of the sediments. By calculating relative normalized concentrations, it was possible to clearly show underlying mechanisms throughout a heterogeneous set of samples. Furthermore, we were able to show that, for comparability, screening at <125 μm is best suited and can be further improved by additional organic-carbon normalization.
KW - Chemistry
KW - Organic pullutants
KW - Grain-size partitioning
KW - Organic carbon
KW - Sediment
KW - Normalization
KW - Grain-size partitioning
KW - Normalization
KW - Organic carbon
KW - Organic pollutants
KW - Sediment
UR - http://www.scopus.com/inward/record.url?scp=79951512193&partnerID=8YFLogxK
U2 - 10.1016/j.envpol.2010.12.014
DO - 10.1016/j.envpol.2010.12.014
M3 - Journal articles
VL - 159
SP - 924
EP - 931
JO - Environmental Pollution
JF - Environmental Pollution
SN - 0269-7491
IS - 4
ER -