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Title:

Carbon Nanoparticle Toxicity to marine algae Navicula longa and Isochrysis galbana

Date:

8/2012

Link to Journal Abstract

Abstract:

Present study reports cytotoxicity of Carbon Nanoparticles to Navicula and Isochrysis. Cytotoxicity was determined by morphological changes, cell density count, Acid Phosphatase and Lactate dehydrogenase assays. Carbon nanoparticles (CNPs) promote concentration as well as exposure dependent toxicity to Navicula & Isochrysis, which exhibited cell death, necrotic changes such as cell shrinkage and pycnosis of nucleus. Lactate Dehydrogenase (LDH) & Acid Phosphatase (ACP) activities elevated significantly, in both algae, in a dose and exposure dependant manner. In Navicula and Isochrysis, LDH activity was elevated by 42.3% and 60.7%, and 44.5% and 90.3%, on exposure to 0.05 mg/mL and 1 mg/mL CNPs for 10 days respectively. Similarly, ACP activity in both Navicula and Isochrysis was elevated by 34.6% and 55.4%, and 11.7% and 18.5%, on exposure to 0.05 mg/mL and 1 mg/mL of CNPs for 10 days respectively, as compared to the controls. The occurrence of tube like structures under the influence of CNPs in algae was also observed.

Non-technical Summary:

For this study, the cytotoxicity of Carbon Nanoparticles to Navicula and Isochrysis. Cytotoxicity was determined by morphological changes, cell density count, Acid Phosphatase and Lactate dehydrogenase assays.

Content Emphasis

Peer Reviewed Journal Article

Exposure Or Hazard Target

Aquatic Ecosystem

Exposure Pathway

Other/Unspecified

Method Of Study

Environmental Study

Paper Type

Environmental Fate and Transport

Particle Type

Carbon