Toxicological effects of tire rubber-derived 6PPD-quinone, a species-specific toxicant, and dithiobisbenzanilide (DTBBA) in the marine rotifer Brachionus koreanus

被引：12

作者：

Maji, Usha Jyoti ^{[1
]}

Kim, Kyuhyeong ^{[1
]}

Yeo, In-Cheol ^{[1
]}

Shim, Kyu-Young ^{[1
]}

Jeong, Chang-Bum ^{[1
]}

机构：

[1] Incheon Natl Univ, Coll Nat Sci, Dept Marine Sci, Incheon 22012, South Korea

来源：

MARINE POLLUTION BULLETIN | 2023年 / 192卷

关键词：

Tire rubber; Tire wear particles; Tire additives; DTBBA; 6PPD-Q; Rotifer; ECOTOXICOLOGY;

D O I：

10.1016/j.marpolbul.2023.115002

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The ingredients of tire-rubber products include a complex range of chemicals additives, most of which are leached into surrounding water as unmeasured toxicants with unexplored ecotoxicological impacts. The present study summarizes the reported species-specific acute toxicity of N-(1,3-dimethylbutyl)-N '-phenyl-p-phenylenediamine-quinone (6PPD-Q), the ozonation product of anti-oxidant 6PPD used in tire rubber. Also, chronic toxicity and oxidative response of 6PPD-Q and another tire-rubber derivative, 2 ',2 '''-dithiobisbenzanilide (DTBBA), in rotifer Brachionus koreanus were investigated. Although 6PPD-Q has been reported to be highly toxic to several species of salmonids, only moderate chronic toxicity was observed in B. koreanus. In contrast, DTBBA significantly retarded the population growth and fecundity. The varying toxicity of 6PPD-Q and DTBBA was linked to the level of reactive oxygen species in which DTBBA exposure caused a significant concentrationdependent increase. Our results imply unanticipated risks to aquatic species posed by chemical additives in tire-rubber which may be considered emerging contaminants of toxicological concern.

引用

页数：6