Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) Compound specific and enantioselective stable isotope analysis as tools to monitor transformation of hexachlorocyclohexane (HCH) in a complex aquifer system
Autor Liu, Y.; Bashir, S.; Stollberg, R.; Trabitzsch, R.; Weiß, H.; Paschke, H.; Nijenhuis, I.; Richnow, H.-H.;
Journal / Serie Environmental Science & Technology
Erscheinungsjahr 2017
Department ISOBIO; ANA; ENVINF;
Band/Volume 51
Heft 16
Sprache englisch;
POF III (gesamt) T41;
Supplements https://pubs.acs.org/doi/suppl/10.1021/acs.est.6b05632
UFZ Querschnittsthemen RU3;
Abstract Technical hexachlorocyclohexane (HCH) mixtures and Lindane (γ-HCH) have been produced in Bitterfeld-Wolfen, Germany, for about 30 years until 1982. In the vicinity of the former dump sites and production facilities, large plumes of HCHs persist within two aquifer systems. We studied the natural attenuation of HCH in these groundwater systems through a combination of enantiomeric and carbon isotope fractionation to characterize the degradation of α-HCH in the areas downstream of a former disposal and production site in Bitterfeld-Wolfen. The concentration and isotope composition of α-HCH from the Quaternary and Tertiary aquifers were analyzed. The carbon isotope compositions were compared to the source signal of waste deposits for the dumpsite and highly contaminated areas. The average value of δ13C at dumpsite was −29.7 ± 0.3 ‰ and −29.0 ± 0.1 ‰ for (−) and (+)α-HCH, respectively, while those for the β-, γ-, δ-HCH isomers were −29.0 ± 0.3 ‰, −29.5 ± 0.4 ‰, and −28.2 ± 0.2 ‰, respectively. In the plume, the enantiomer fraction shifted up to 0.35, from 0.50 at source area to 0.15 (well T1), and was found accompanied by a carbon isotope enrichment of 5 ‰ and 2.9 ‰ for (−) and (+)α-HCH, respectively. The established model for interpreting isotope and enantiomer fractionation patterns showed potential for analyzing the degradation process at a field site with a complex history with respect to contamination and fluctuating geochemical conditions.
ID 19181
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=19181
Liu, Y., Bashir, S., Stollberg, R., Trabitzsch, R., Weiß, H., Paschke, H., Nijenhuis, I., Richnow, H.-H. (2017):
Compound specific and enantioselective stable isotope analysis as tools to monitor transformation of hexachlorocyclohexane (HCH) in a complex aquifer system
Environ. Sci. Technol. 51 (16), 8909 - 8916