SERS approach for Zn(II) detection in contaminated soil

• Authors: László Szabó , Loredana Leopold , Bogdan Cozar , Nicolae Leopold , Krisztian Herman , Vasile Chiş
• Languages of publication: EN

Abstracts

EN

Soil contamination by metals is a common problem encountered in many industrialized countries. In this work we present a new approach for heavy metals detection by using surface-enhanced Raman scattering (SERS) spectroscopy. Zn(II) can be clearly determined by SERS in contaminated soil by using 4-(2-pyridylazo) resorcinol (PAR) as chelating molecule for the metal ion. The SERS spectra of PAR, of its metal chelates and of the soil extract-PAR mixture were recorded using a hydroxylamine reduced silver colloid. An excellent match of the PAR-contaminated soil extracts SERS spectrum to the Zn(PAR)2 SERS spectrum can be observed, demonstrating the presence of Zn(II) in the soil probes. Density functional theory (DFT) based calculations were also performed for a reliable assignment of SERS spectra.

Keywords

EN

4-(2-pyridylazo) resorcinol; DFT; metal contamination; Raman; SERS

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2011
• Volume: 9
• Issue: 3
• Pages: 410-414

Dates

published

1 - 6 - 2011

online

22 - 3 - 2011

Contributors

author

László Szabó

• Babeş-Bolyai University

author

Loredana Leopold

• University of Agricultural Sciences and Veterinary Medicine

author

Bogdan Cozar

• Babeş-Bolyai University

author

Nicolae Leopold

• Babeş-Bolyai University

author

Krisztian Herman

• Babeş-Bolyai University

author

Vasile Chiş

• Babeş-Bolyai University

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Identifiers

DOI

10.2478/s11532-011-0019-5