caa a22 4500 445878258 CHVBK 20180317145534.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s11030-010-9250-9 doi (NATIONALLICENCE)springer-10.1007/s11030-010-9250-9 Estimating persistence of brominated and chlorinated organic pollutants in air, water, soil, and sediments with the QSPR-based classification scheme [Elektronische Daten] [T. Puzyn, M. Haranczyk, N. Suzuki, T. Sakurai] We have estimated degradation half-lives of both brominated and chlorinated dibenzo-p-dioxins (PBDDs and PCDDs), furans (PBDFs and PCDFs), biphenyls (PBBs and PCBs), naphthalenes (PBNs and PCNs), diphenyl ethers (PBDEs and PCDEs) as well as selected unsubstituted polycyclic aromatic hydrocarbons (PAHs) in air, surface water, surface soil, and sediments (in total of 1,431 compounds in four compartments). Next, we compared the persistence between chloro- (relatively well-studied) and bromo- (less studied) analogs. The predictions have been performed based on the quantitative structure-property relationship (QSPR) scheme with use of k-nearest neighbors (kNN) classifier and the semi-quantitative system of persistence classes. The classification models utilized principal components derived from the principal component analysis of a set of 24 constitutional and quantum mechanical descriptors as input variables. Accuracies of classification (based on an external validation) were 86, 85, 87, and 75% for air, surface water, surface soil, and sediments, respectively. The persistence of all chlorinated species increased with increasing halogenation degree. In the case of brominated organic pollutants (Br-OPs), the trend was the same for air and sediments. However, we noticed that the opposite trend for persistence in surface water and soil. The results suggest that, due to high photoreactivity of C-Br chemical bonds, photolytic processes occurring in surface water and soil are able to play significant role in transforming and removing Br-OPs from these compartments. This contribution is the first attempt of classifying together Br-OPs and Cl-OPs according to their persistence, in particular, environmental compartments. Springer Science+Business Media B.V., 2010 Brominated organic pollutants nationallicence Half-lives nationallicence QSPR nationallicence kNN nationallicence Class of persistence nationallicence Puzyn T. Faculty of Chemistry, Laboratory of Environmental Chemometrics, University of Gdańsk, ul. Sobieskiego 18, 80-952, Gdańsk, Poland aut Haranczyk M. Computational Research Division, Lawrence Berkeley National Laboratory, 94720, Berkeley, CA, USA aut Suzuki N. National Institute for Environmental Studies, Research Center for Environmental Risk, Exposure Assessment Research Section, 16-2 Onogawa, 305-8506, Tsukuba, Ibaraki, Japan aut Sakurai T. National Institute for Environmental Studies, Research Center for Environmental Risk, Exposure Assessment Research Section, 16-2 Onogawa, 305-8506, Tsukuba, Ibaraki, Japan aut Molecular Diversity Springer Netherlands 15/1(2011-02-01), 173-188 1381-1991 15:1<173 2011 15 11030 https://doi.org/10.1007/s11030-010-9250-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11030-010-9250-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Puzyn T. Faculty of Chemistry, Laboratory of Environmental Chemometrics, University of Gdańsk, ul. Sobieskiego 18, 80-952, Gdańsk, Poland aut NATIONALLICENCE 700 1- Haranczyk M. Computational Research Division, Lawrence Berkeley National Laboratory, 94720, Berkeley, CA, USA aut NATIONALLICENCE 700 1- Suzuki N. National Institute for Environmental Studies, Research Center for Environmental Risk, Exposure Assessment Research Section, 16-2 Onogawa, 305-8506, Tsukuba, Ibaraki, Japan aut NATIONALLICENCE 700 1- Sakurai T. National Institute for Environmental Studies, Research Center for Environmental Risk, Exposure Assessment Research Section, 16-2 Onogawa, 305-8506, Tsukuba, Ibaraki, Japan aut NATIONALLICENCE 773 0- Molecular Diversity Springer Netherlands 15/1(2011-02-01), 173-188 1381-1991 15:1<173 2011 15 11030 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer