The DOI matches its Crossref record; 15 of the 15 references it cites were found in a registry or an index.
Selective Detection of Mercury (II) Ion Using Nonlinear Optical Properties of Gold Nanoparticles
Open accessAbstract
Contamination of the environment with heavy metal ions has been an important concern throughout the world for decades. Driven by the need to detect trace amounts of mercury in environmental samples, this article demonstrates for the first time that nonlinear optical (NLO) properties of MPA-HCys-PDCA-modified gold nanoparticles can be used for rapid, easy and reliable screening of Hg(II) ions in aqueous solution, with high sensitivity (5 ppb) and selectivity over competing analytes. The hyper Rayleigh scattering (HRS) intensity increases 10 times after the addition of 20 ppm Hg(2+) ions to modified gold nanoparticle solution. The mechanism for HRS intensity change has been discussed in detail using particle size-dependent NLO properties as well as a two-state model. Our results show that the HRS assay for monitoring Hg(II) ions using MPA-HCys-PDCA-modified gold nanoparticles has excellent selectivity over alkali, alkaline earth (Li(+), Na(+), K(+), Mg(2+), Ca(2+)), and transition heavy metal ions (Pb(2+), Pb(+), Mn(2+), Fe(2+), Cu(2+), Ni(2+), Zn(2+), Cd(2+)).
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Cites
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Self-citationGold Nanoparticle Based FRET Asssay for the Detection of DNA Cleavage
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Self-citation3 nm-Scale Molecular Switching between Fluorescent Coordination Capsule and Nonfluorescent Cage
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Cited by
Toxicity and Environmental Risks of Nanomaterials: Challenges and Future Needs
RAY, P. C., YU, H., & FU, P. P. (2009) · Journal of Environmental Science and Health, Part C · doi:10.1080/10590500802708267 · Cited by 936
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Detection and Spatial Mapping of Mercury Contamination in Water Samples Using a Smart-Phone
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Metadata
- Authors
- Darbha, G. K., Singh, A. K., Rai, U. S., Yu, E., Yu, H., & Chandra Ray, P.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-06-01
- Volume
- 130
- Issue
- 25
- Pages
- 8038-8043
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2086463981
- Cited by
- 434
- References
- 15
- FWCI
- 16.72
- Type
- journal article
- Language
- en
- Open access
- green
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