A1 Journal article (refereed)
POPs and organic polysulfides in sediments of Lake Ladoga (2007)

Särkkä, J., Hynynen, J., Mäntykoski, K., Herve, S., Lahtiperä, M., & Paasivirta, J. (2007). POPs and organic polysulfides in sediments of Lake Ladoga. Chemosphere, 67 (3), 435-438. https://doi.org/10.1016/j.chemosphere.2006.09.061

JYU authors or editors

Publication details

All authors or editors: Särkkä, Jukka; Hynynen, Juhani; Mäntykoski, Keijo; Herve, Sirpa; Lahtiperä, Mirja; Paasivirta, Jaakko

Journal or series: Chemosphere

ISSN: 0045-6535

eISSN: 1879-1298

Publication year: 2007

Volume: 67

Issue number: 3

Pages range: 435-438

Publisher: Elsevier

Publication country: Germany

Publication language: English

DOI: https://doi.org/10.1016/j.chemosphere.2006.09.061

Persistent website address: https://doi.org/10.1016/j.chemosphere.2006.09.061

Publication open access: Not open

Publication channel open access:


The study included one station close to a pollution source (depth 59 m) and another far from polluted areas (depth 40 m). Samples were analysed for organic chlorine, bromine and sulfur compounds. Samples taken with a corer were sliced to the layers of 0–1, 1–4, 4–7 cm etc. down to the depth of 34 cm. The dating was made with two independent methods, the 210Po method and with the soot particle counting method. The analyses were made with a multiresidue method. Gas chromatography was connected to low resolution mass spectrometry (LRMS) or to high resolution mass spectrometry (HRMS). A different extraction was applied to screen the possible occurrence of polysulfides. Typical chlorophenol and chlorohydrocarbon traces from chlorobleaching of pulp were non-detectable. Also PCDDs, PCDFs, PCBs and various organochloride pesticides, fire retardant residues PBDEs, PBDDs and PBDFs and polychlorinated phenyl salicylates were not detected. Instead, methylated dibenzothiophenes Me-DBTs and Di-Me-DBTs, typical traces of oil based defoamers used in e.g. paper mills were found in the surface layers of the polluted site. Polysulfides were analyzed from layers representing years 1955–1970 from the polluted site. The structures of five congeners were according to GC/MS dimethyl trisulfide, 1,2,3,4-tetrathiepane, pentathiane, 1,2,3,4-tetrathiane and 1,2,4,5-tetrathiepane. Many of the analyzed pollutants have not been reported earlier from Lake Ladoga. The only positive observations were from oil-based defoamers used in paper mills, and from polysulfides, which are either of natural origin or indicate a discharge in the 1950s and 1960s. Owing to the large spreadout and dilution, the concentrations are low even at moderate distances from the pollution centers.

Keywords: chlorophenols

Free keywords: Chlorohydrocarbons; Dibenzothiophenes; Polysulfides

Contributing organizations

Ministry reporting: Yes

Preliminary JUFO rating: Not rated

Last updated on 2021-08-07 at 17:37