A Study on Ecotoxicological Effects of Nano-copper Oxide Particles to Portunus Trituberculatus.

Abstract:

:As an important nano-material, nano-copper oxide particles (CuO-ENPs) harbor a vast range of characteristics, including electronic correlation effect, thermal stability, catalytic activity, sterilization and other properties. At present, the mechanism of ecotoxicological effects of CuO-ENPs is not yet clear, and has been inconclusive. Therefore, we aimed to explore the ecotoxicological effects of nano-copper oxide particles (CuO-ENPs) to Portunus trituberculatus. The crabs were exposed in sea water contained different concentrations of CuO-ENPs to conduct the acute toxicity test and chronic accumulation test. Acute toxicity, metal accumulation and SOD activity in different tissues were determined. We found that lethal concentration of 50% 96 h LC50 of CuO-ENPs to Portunus trituberculatus belonged to low toxicity. The accumulation of CuO-ENPs in different tissues from high to low was: gill > haemolymph > muscle > hepatopancreas > heart and stomach, and decreased gradually with time after reached maximum. Subsequencely, it was in relative steady state after a certain period and showed an obvious concentration effect. With the increment of exposure time and concentration of CuO-ENPs, the SOD activities in different tissues were quite different. In conclusion, the 96 h LC50 of CuO-ENPs to Portunus trituberculatus was 49 mg/L, and its toxicity belonged to low toxicity. With the increment of exposure time and concentration of CuO-ENPs, the SOD activities in different tissues were quite different, which were increased remarkably in gill and hepatopancreas, but were suppressed at early stage of exposure in muscle and haemolymph.

journal_name

Curr Pharm Biotechnol

authors

Li T,Hu H,Yang C,Zhang B,Ma L

doi

10.2174/1389201021666201229111251

subject

Has Abstract

pub_date

2020-12-28 00:00:00

eissn

1389-2010

issn

1873-4316

pii

CPB-EPUB-112775

pub_type

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