Spatial distribution and bioaccumulation of polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) in snails (Bellamya aeruginosa) and sediments from Taihu Lake area, China

Yin, G; Zhou, YH; Strid, A; Zheng, ZY; Bignert, A; Ma, TW; Athanassiadis, I; Qiu, YL
2017 | Environ Sci Pollut Res | 24 (8) (7740-7751)
Taihu Lake area is one of the densest metropolitan areas in the world including diverse industrial activity. In the present study, the snail (Bellamya aeruginosa) and sediment were collected from the Taihu Lake area to investigate the contamination status, congener pattern, spatial distribution, and bioaccumulation effect of polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs). The samples underwent liquid extraction, lipid removal by sulfuric acid, and acidic silica gel column, and subsequently analyzed by gas chromatography-electron capture detector (GC-ECD) and gas chromatography-mass spectrometry (GC-MS). Concentration of S22PCBs ranged between 90 and 680 ng g(-1) lipid weight in the snails and between 0.018 and 0.82 ng g(-1) dry weight in the sediments. Concentration of S24PBDEs varied from 25 to 200 ng g(-1) lipid weight in the snails and from 0.62 to 67 ng g(-1) dry weight in the sediments. The levels of PCBs and PBDEs observed were in the medium to low range compared with other studies in the world. CB-153 was the predominant PCB congener in both snails and sediments whereas BDE-209 showed a low bioavailability in the snails, even if it contributed up to 70% of S24PBDEs in the sediments. The spatial distribution showed that the highest concentration of PCBs and PBDEs were detected in samples from Zhushan Lake. East Taihu Lake and Dianshan Lake showed lower concentration of PCBs and PBDEs than the other sampling sites. Biota-sediment accumulation was found between snails and sediments of most of PCB and PBDE congeners except for the highly brominated BDEs (i.e., BDE-209). Therefore, sediment is suggested to be an appropriate matrix to monitor BDE-209 while aquatic species such as the snail could be good for monitoring of PCBs and lower brominated BDE congeners. No significant correlation (Spearman correlation test, two-tailed) of CB-153 (r = 0.54, p = 0.27) or BDE-47 (r = 0.60, p = 0.21) was found between snails and sediments.

Brominated flame retardant exposure of aircraft personnel

Strid, A; Smedje, G; Athanassiadis, I; Lindgren, T; Lundgren, H; Jakobsson, K; Bergman, A
2014 | Chemosphere | 116 (83-90)
The use of brominated flame retardants (BFRs) such as polybrominated diphenyl ethers (PBDEs) in aircraft is the result of high fire safety demands. Personnel working in or with aircraft might therefore be exposed to several BFRs. Previous studies have reported PBDE exposure in flight attendants and in passengers. One other group that may be subjected to significant BFR exposure via inhalation, are the aircraft maintenance workers. Personnel exposure both during flights and maintenance of aircraft, are investigated in the present study. Several BFRs were present in air and dust sampled during both the exposure scenarios; PBDEs, hexabromocyclododecane (HBCDD), decabromodiphenyl ethane (DBDPE) and 1,2-bis (2,4,6-tribromophenoxy) ethane. PBDEs were also analyzed in serum from pilots/cabin crew, maintenance workers and from a control group of individuals without any occupational aircraft exposure. Significantly higher concentrations of PBDEs were found in maintenance workers compared to pilots/cabin crew and control subjects with median total PBDE concentrations of 19, 6.8 and 6.6 pmol g(-1) lipids, respectively. Pilots and cabin crew had similar concentrations of most PBDEs as the control group, except for BDE-153 and BDE-154 which were significantly higher. Results indicate higher concentrations among some of the pilots compared to the cabin crew. It is however, evident that the cabin personnel have lower BFR exposures compared to maintenance workers that are exposed to such a degree that their blood levels are significantly different from the control group. (C) 2014 Elsevier Ltd. All rights reserved.

NEUTRAL AND PHENOLIC BROMINATED ORGANIC COMPOUNDS OF NATURAL AND ANTHROPOGENIC ORIGIN IN NORTHEAST ATLANTIC GREENLAND SHARK (SOMNIOSUS MICROCEPHALUS)

Strid, A; Athanassiadis, I; Athanasiadou, M; Svavarsson, J; Papke, O; Bergman, A
2010 | Environ. Toxicol. Chem. | 29 (2653-2659)

Dioxins and PCBs in Greenland shark (Somniosus microcephalus) from the North-East Atlantic

Strid A; Jörundsdóttir H; Päpke O; Svavarsson J; Bergman Å;
2007 | Mar. Pollut. Bull. | 54

A retrospective study of PBDEs and PCBs in human milk from the Faroe Islands

Fängström B; Strid A; Grandjean P; Weihe P; Bergman Å;
2005 | Environ Health | 4

Analysis of PBDE and PCB in human milk from the Faroe Islands

2004

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