ABSTRACT

This study report the presence of polybrominated biphenyls (PBBs), polybrominated diphenyl ethers (PBDEs) and novel brominated flame-retardants (NBFRs) in muscle tissues of Labeo capensis (mudfish), Labeo umbratus (moggel), Cyprinus carpio (carp) and Clarias gariepinus (catfish) from Vaal River, South Africa. The concentrations (in ng g⁻¹ wet weight (ww)) of these contaminants ranged from LOQ to 12.8 ng g⁻¹ ww in catfish, with lowest concentrations found for mudfish ranging from <LOQ to 3.4 ng g⁻¹ ww. This variation was attributed to species-specific ecological status such as feeding habit and trophic level with BDE209 and BB209 as a major congeners among PBDEs and PBBs, respectively, and decabromodiphenyl ethane (DBDPE) as a major flame retardants among the NBFRs. The hazard quotients of these contaminants were very low indicating that these contaminants do not pose health risk to South Africans via fish consumption.

摘要

本研究报告了Labeo capensis（泥鱼）、Labeo umbratus（moggel）、Cyprinus carpio（鲤鱼）和Clarias的肌肉组织中存在多溴联苯 (PBB)、多溴二苯醚 (PBDE) 和新型溴化阻燃剂 (NBFR)来自南非瓦尔河的鲶鱼（鲶鱼）。这些污染物在鲶鱼中的浓度（以 ng g ^-1湿重 (ww) 为单位）范围为 LOQ 至 12.8 ng g ^-1 ww，泥鱼的最低浓度范围为 <LOQ 至 3.4 ng g ^-1万维网。这种变化归因于物种特定的生态状况，例如摄食习惯和营养水平，其中 BDE209 和 BB209 分别是 PBDEs 和 PBBs 中的主要同源物，十溴二苯乙烷 (DBDPE) 作为 NBFRs 中的主要阻燃剂。这些污染物的危害系数非常低，表明这些污染物不会通过食用鱼类对南非人造成健康风险。