Linked Life Data

21611650

Source:http://linkedlifedata.com/resource/pubmed/id/21611650

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
13
pubmed:dateCreated
2011-6-15
pubmed:abstractText
A new approach for the detection of Hg(2+) is reported based on color changes from which gold nanoparticles (Au NPs) are surrounded by a layer of HgS quantum dots to form in situ Au@HgS core-shell nanostructures. The surface plasmon resonance (SPR) absorption of the gold core was changed due to a shell layer of HgS formed on the surface of the Au NPs, which brings the colour change of the aqueous solution. Therefore, Hg(2+) can be recognized by visualizing the colour change of the Au@HgS core-shell nanostructures, and can be detected quantitatively by measurement of the UV-vis spectra. Some effects on the detection of Hg(2+) were investigated in detail. This method was used to detect Hg(2+) with excellent selectivity and high sensitivity. In our method, the lowest detected concentrations for mercury ions were 5.0 × 10(-6) M observed by the naked eye and 0.486 nM as measured by UV-vis spectra. At the range from 8.0 × 10(-5) to 1.0 × 10(-8) M of Hg(2+), this method was shown to have a good linear relationship.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1364-5528
pubmed:author
pubmed:issnType
Electronic
pubmed:day
7
pubmed:volume
136
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2825-30
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
A one-step colorimetric method of analysis detection of Hg2+ based on an in situ formation of Au@HgS core-shell structures.
pubmed:affiliation
Anhui Key Laboratory of Chemo-biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't