Effects of LaCoO₃ perovskite nanoparticle on Daphnia magna: accumulation, distribution and biomarker responses

Abstract

The instability of PNMs in water is of environmental concern. This study shows that in daphnids over 48 h, the mode of action of a representative PNM LaCoO3 is dependent on Co species, which results in the differences in uptake, accumulation, distribution and toxicity.

Determination of the distribution of rare earth elements La and Gd in Daphnia magna via micro and nano-SXRF imaging

“…32 However, concentrations measured in whole organisms do not necessarily mean that contaminant-receptor interactions are occurring, and further information is needed on the site of accumulation and whether the contaminants are undergoing active metabolism and affecting the physiology of the animal. 11 showed the potential of synchrotron XRF imaging for studying biodistribution of Ln in daphnids. This multi-element analysis offers high spatial resolution 2D mapping and is capable of detecting very low metal concentrations within a complete organism.…”

“…Zhou et al 11 showed the potential of synchrotron XRF imaging for studying biodistribution of Ln in daphnids. This multi-element analysis offers high spatial resolution 2D mapping and is capable of detecting very low metal concentrations within a complete organism.…”

“…Synchrotron micro X-ray fluorescence spectroscopy showed for example for LaCoO 3 perovskite nanoparticles that aggregates were taken up with food and found in the gut of D. magna . 11 With increasing LaCoO 3 concentration, the dissolved La accumulated in the thoracic limbs. 11 Oxidative stress was induced regardless the nominal concentration, and the highest dose altered the Na + /K + -ATPase activity.…”

“…11 With increasing LaCoO 3 concentration, the dissolved La accumulated in the thoracic limbs. 11 Oxidative stress was induced regardless the nominal concentration, and the highest dose altered the Na + / K + -ATPase activity. With Gd based contrast agents (GdCA), accumulation in D. magna was studied by laser ablation inductively coupled plasma mass spectrometry.…”

Sustainable Green Process for Environmentally Viable Perovskite Solar Cells

“…In the past few years, only 12 studies have provided experimental data on the biological impacts of PSC-related chemicals (Table and Figure ). Two fishes (zebrafish and Japanese medaka), ,− a water flea, ,,− a phytoplankton, a chironomus, a nematode, , and bacteria were selected as test species. Three soil plants and soil bacteria , were investigated to evaluate the soil ecotoxicology, and five human cell lines (A549 cell, SH-SY5Y cell, Caco-2/TC7 cell, Beas2B cell, and HepG2 cell) and mouse neurons were assessed via in vitro assay. ,, Even though the aquatic toxicity data accumulated were more than those on soil toxicity and cytotoxicity, the number of reports is still very limited.…”