SERS detection of environmental pollutants in humic acid–gold nanoparticle composite materials

文献信息

发布日期 2007-09-24

DOI 10.1039/B711361G

影响因子 4.616

作者

Ramon A. Alvarez-Puebla, David S. dos Santos, Jr., Ricardo F. Aroca

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摘要

Humic acid (HA) solutions provide an unexpected medium for direct fabrication of gold nanoparticles (HA–AuNP) and a clear window for surface-enhanced Raman scattering (SERS) with many potential applications in the ultrasensitive chemical analysis of environmental pollutants. It is demonstrated that the HA–AuNP fabrication can be easily achieved in a wide range of pH (2 to 12). The background SERS spectra of HA is relatively weak in absolute intensity, allowing the detection of the enhanced Raman signal from trace amount of contaminants. An in-situ approach is illustrated where the HA–AuNP fabrication is carried out with a HA solution containing the target pollutant. The technique may allow for the direct detection of organic pollutants present in the humic fraction of soil.

期刊推荐

Current Medicinal Chemistry

Construction and Building Materials

Bio-Medical Materials and Engineering

Computational Materials Science

Cement and Concrete Composites

Advanced Powder Technology

Chirality

Main Group Metal Chemistry

Heterocyclic Communications

Journal of Computer-Aided Molecular Design

来源期刊

Analyst

CiteScore: 7.8

自引率: 5.6%

年发文量: 653

Analyst publishes analytical and bioanalytical research that reports premier fundamental discoveries and inventions, and the applications of those discoveries, unconfined by traditional discipline barriers.

SERS detection of environmental pollutants in humic acid–gold nanoparticle composite materials

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