Linked Life Data

21239047

Source:http://linkedlifedata.com/resource/pubmed/id/21239047

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2011-2-8
pubmed:abstractText
Due to the active development and application of nanotechnology, engineered nanomaterials (ENMs) are becoming a new class of environmental pollutants that may significantly impact the environment and human health. While many toxicity investigations have been conducted, there is little information about the synergistic effect of ENMs and other toxic compounds in the environment. In order to extend this knowledge, the combined effect of TiO? nanoparticles (n-TiO?) and As(V) were investigated. High concentrations of As(V) can accumulate on the n-TiO? surface. Cultured Ceriodaphnia dubia (C. dubia) species were used to examine the synergistic toxic effect through exposure to 1) n-TiO? suspensions, 2) As(V) solutions, and 3) mixtures of n-TiO? and As(V) suspensions. Results showed that n-TiO? alone was not toxic when the concentration was less than 400 mg/L and that the 24-hour median lethal concentration (LC??) of As(V) alone was 3.68±0.22mg/L. However, in the presence of low concentrations of n-TiO?, the toxicity of As(V) increased significantly. At the same initial As(V) concentration, the toxicity of n-TiO? first increased, reached a maximum, and then decreased with an increase in n-TiO? concentration. Hydrodynamic size and sorption capacity were most important parameters for toxicity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1879-1026
pubmed:author
pubmed:copyrightInfo
Copyright © 2010 Elsevier B.V. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
1
pubmed:volume
409
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1351-6
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Synergistic toxic effect of nano-TiO and As(V) on Ceriodaphnia dubia.
pubmed:affiliation
Department of Civil, Architectural and Environmental Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA. wangjia@mst.edu
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't