Abstract
Nanotoxicology is argued and considered one of the emerging topics. In this study, polyaniline (PANI)/2-acrylamido-2-methylpropanesulfonic acid (AMPSA) capped silver nanoparticles (NPs)/graphene oxide (GO) quantum dots (QDs) nanocomposite (PANI/Ag (AMPSA)/GO QDs NC) as a nanoadsorbent has a potential for removal of toxic hexavalent chromium (Cr(VI)) ions from water. The acute toxicity of this NC was evaluated on Artemia salina and freshwater Ostracods (Cypridopsis vidua) larvae for 48 h. The measurements were made at 24 and 48 h with 3 repetitions. The 50% effective concentration (EC50) values of the NC were determined after the exposure of these organisms. According to the results of the optical microscope, it was found that both experimental organisms intake the NC. In the toxicity results of Ostracods, the NC had a highly toxic effect only at 250 mg/L after 48 h and the EC50 value was 157.6 ± 6.4 mg/L. For Artemia salina individuals, it was noted that they were less sensitive than the Ostracods and EC50 value was 476 ± 25.1 mg/L after 48 h. These results indicated that PANI/Ag (AMPSA)/GO QDs NC has low toxicity towards both investigated organisms.
Highlights
Nanotoxicology is argued and considered one of the emerging topics
Ibarra et al confirmed that the 50% lethal concentration (LC50) values of PANI NPs dispersed in polyvinylpyrrolidone and polyN-isopropylacrilamide on the larvae of Rhinella arenarum were 1500 mg/L and 1170 mg/L, r espectively[34]
graphene oxide (GO) quantum dots (QDs) were synthesized by direct glucose (BDH Prolabo Chemicals) pyrolysis and dodecylbenzene sulfonic acid (El-Gomhoria Chemical Company, Egypt) doped PANI was synthesized by chemical oxidative polymerization method, respectively
Summary
Nanotoxicology is argued and considered one of the emerging topics. In this study, polyaniline (PANI)/2-acrylamido-2-methylpropanesulfonic acid (AMPSA) capped silver nanoparticles (NPs)/ graphene oxide (GO) quantum dots (QDs) nanocomposite (PANI/Ag (AMPSA)/GO QDs NC) as a nanoadsorbent has a potential for removal of toxic hexavalent chromium (Cr(VI)) ions from water. For Artemia salina individuals, it was noted that they were less sensitive than the Ostracods and EC50 value was 476 ± 25.1 mg/L after 48 h These results indicated that PANI/Ag (AMPSA)/GO QDs NC has low toxicity towards both investigated organisms. This field has widely studied since some of the engineered nanoparticles reach water r esources[7] Carbon nanostructures such as graphene, graphene oxide and carbon nanotubes have unique physical and chemical properties with wide potential applications in various fields[8,9,10,11,12,13,14]. Graphene oxide quantum dots (GO QDs) with a particle size ranging from 2 to 20 nm are attracted due to their chemical inertness, low toxicity, biocompatibility, eco-friendly, and good s olubility[18]. Ibarra et al confirmed that the 50% lethal concentration (LC50) values of PANI NPs dispersed in polyvinylpyrrolidone and polyN-isopropylacrilamide on the larvae of Rhinella arenarum were 1500 mg/L and 1170 mg/L, r espectively[34]
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