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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Toxicity assessment of arsenic and cobalt in the presence of aquatic humic substances of different molecular sizes

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Author(s):
Watanabe, Claudia Hitomi ; Costa Monteiro, Adnivia Santos ; Jeunon Gontijo, Erik Sartori ; Lira, Vivian Silva ; Bueno, Carolina de Castro ; Kumar, Nirmal Tej ; Fracacio, Renata ; Rosa, Andre Henrique
Total Authors: 8
Document type: Journal article
Source: ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY; v. 139, p. 1-8, MAY 2017.
Web of Science Citations: 8
Abstract

using environmentally relevant concentrations of arsenic and cobalt were conducted both in the presence and absence of aquatic humic substances (AHS) and the fractions of different molecular sizes in the range of (< 5, 5-10;10-30; 30-100 and > 100kDa) using the microcrustacean Ceriodaphnia dubia. AHS together with arsenic reduced the toxicity, and the toxicity decreased in fractions of larger molecular size AHS. Despite the presence of cobalt, the reduction in toxicity was not observed and that depended on the molecular size of AHS. There was a trend of enhanced toxicity for Co in fractions of larger molecular sizes, opposed to that found for arsenic. Thus, the humic substances alter toxicity of trace elements, and this effect varies depending on the size of the humic substances (AU)

FAPESP's process: 14/20979-4 - Transport, availability and ecotoxicology of nanoparticles in the environment: interactions with natural organic matter in aquatic systems
Grantee:Cláudia Hitomi Watanabe
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 13/24168-8 - Sustainable agriculture: preparation and characterization of polymeric microspheres containing biochar for imobilization and slow release of phosphorus and promoting bacteria plant growth
Grantee:André Henrique Rosa
Support type: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 16/08215-4 - REUTILIZATION OF WASTE AND DETOXIFICATION OF WASTEWATER: EVALUATION OF THE POTENTIAL APPLICATION OF BIOCHAR FOR THE REMOVAL OF EMERGING CONTAMINANTS AND PONTENTIALLY TOXIC METALS
Grantee:André Henrique Rosa
Support type: Regular Research Grants