Polychlorinated biphenyls (PCBs) and polybrominated biphenyl ethers (PBDEs) in environmental samples from Ny-Ålesund and London Island, Svalbard, the Arctic

Occurrence of chiral organochlorine compounds in the environmental matrices from King George Island and Ardley Island, west Antarctica

“…There was no report involving chiral PCBs measurement in Antarctica as far as we know. While our recent study 22 in Svalbard, Arctic, showed that chiral PCBs (PCB-95, -136, -149, -174 and -176) could be detected in all the analyzed matrices (soil, reindeer dung and six plant species) except for PCB-174 in reindeer dung and PCB-176 in one of the plant species ( D. octopetala ). Comparable to the low level of chiral PCBs in Arctic, the present results revealed a global background level of these contaminants in the west Antarctica.…”

“…Chiral OCs was previously reported in some remote areas, including Arctic and Antarctica 15 16 18 21 22 23 24 . However, the observations were mostly focused on biota samples where relatively higher concentrations could be measured, and limited data could only be obtained in the environmental matrices in Arctic and nearby areas 22 23 . Antarctica is a pristine area with limited human activities.…”

(Persistent) Organic pollutants in Germany: results from a pilot study within the 2015 moss survey

“…With a dominance of BDE 209 and major contributions of BDE 47 and BDE 99, PBDE profiles were similar to German moss samples. The presence of PBDE in mosses at very remote locations was shown by Wang et al [ 59 ] (Σ12PBDE w/o BDE 209: 0.122 ng g −1 dw, mainly BDE 47, BDE 28 and BDE 99) and Zhu et al [ 63 ] (Σ13PBDE w/o BDE 209: 0.119 ng g −1 dw, mainly BDE 47, BDE 99, BDE 183; Drepanocladus aduncus ) at Svalbard, by Zhu et al [ 64 ] at the Tibetan plateau (Σ13PBDE: 0.16 ng g −1 dw, mainly BDE 183; Pottiaceae , Hypnaceae ) and by Kim et al [ 29 ] at the south Shetland Islands, Antarctica (Σ19PBDE: 0.003–0.07 ng g −1 dw; mainly BDE 47, BDE 99; Sanionia uncinata , Andreaea depressinervis ).…”

“…Similar to our results, concentrations of marker PCB (0.19–0.84 ng g −1 dw, mainly PCB 101, PCB 153) were mostly close to or below the MQL in Swedish moss ( Pleurozium schreberi or Hylocomium splendens ) [ 8 ]. Levels for Σ25 PCB observed in moss ( Drepanocladus aduncus ) from Svalbard were in the same order (0.43–1.16 ng g −1 ) with Mono- to HexaCB being the dominant homologues [ 63 ]. Thüns [ 53 ] observed ndl-PCB in Sphagnum -dominated peat bogs of Eastern Canada; however, significant post depositional mobility of PCB on longer time scales was described which hampered the use of these peatlands as PCB deposition archives.…”

Avaliações toxicológicas das alterações genotóxicas e epigenóticas induzidas por Aroclor 1254 em testí­culo, espermatozóides, fí­gado e rim de camundongos

“…compostos foram usados na produção de transformadores, capacitores elétricos, como trocadores de calor, em fluidos hidráulicos, na composição de tintas e lacas, em papéis de cópia sem carbono, como óleos lubrificantes, organoclorados, resinas plastificantes, tintas de impressão, bombas a vácuo e capeamento(NOGUEIRA et al, 1987;VALADARES;PFEILSTICKER, 2012). A sua produção foi banida na década de 1970 devido à persistência no ambiente e efeitos adversos à saúde humana e aos ecossistemas(ZHU, C. et al, 2015).…”