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Updated: Mar 17, 2026
Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae
Published on: July 10, 2015
Carbon and Metal Quantum Dots toxicity on the microalgae Chlorella pyrenoidosa
An Xiao1, Chao Wang2, Jiao Chen3
1School of Science, China Pharmaceutical University, Nanjing 210009, China; School of Science, Nanjing University of Science and Technology, Nanjing 211000, China.
Abstract:
In this report, we investigated the cytotoxicity of two types of quantum dots(QDs) (carbon quantum dots(CQDs): N, S doped CQDs, N doped CQDs, no doped CQDs; metal QDs(MQDs): CdTe QDs, CdS QDs, CuInS2/ZnS QDs) on Chlorella pyrenoidosa(C. Pyrenoidosa) at different concentrations. We compared the toxicity of different QDs on C. Pyrenoidosa through determination of the algal growth inhibition, acute toxicity tests (EC50), Chlorophyll a(Chla) contents, protein contents, the activity of enzymatic and metabolites contents. When C. Pyrenoidosa was treated by various concentrations of QDs, the Chla contents were consistent to the number of algae cells, showing a good dose-response relationship. At the 96h, the EC50 of N, S doped CQDs, N doped CQDs, no doped CQDs and CdTe QDs, CdS QDs, CuInS2/ZnS QDs were 38.56, 185.83, 232.47, 0.015, 4.88, 459.5mg/l, respectively. The toxicity order of them was: CuInS2/ZnS QDs
