Surface-enhanced Raman and fluorescence a joint analysis of soil humic acids

被引：37

作者：

Corradob, G. ^{[2
]}

Sanchez-Cortes, S. ^{[1
]}

Frandoso, O. ^{[2
]}

Garcia-Ramos, J. V. ^{[1
]}

机构：

[1] CSIC, Inst Estructura Mat, E-28006 Madrid, Spain

[2] Univ Bologna, Dipartimento Sci & Tecnol Agroambientali, I-40126 Bologna, Italy

来源：

ANALYTICA CHIMICA ACTA | 2008年 / 616卷 / 01期

关键词：

surface-enhanced Raman; scattering; surface-enhanced fluorescence; humic acids; spectroscopic imaging;

D O I：

10.1016/j.aca.2008.04.019

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Surface-enhanced Raman scattering (SERS) and surface-enhanced fluorescence (SEF) combined emissions were used in this work to the analysis of humic acids (HA). This study examined HA structure at different pH and HA concentrations and assessed the structural differences taking place in HA as a result of various amendment trials. Raman and fluorescence emissions behave in opposite ways due to the effect of the metal surface on the aromatic groups responsible for these emissions. The information afforded by these techniques can be successfully employed in the structural and dynamic analysis of these important macromolecules. The surface-enhanced emission (SEE) spectra, that is the sum of the Raman and the fluorescence emissions, were acquired by using both Macro- and micro-experimental configurations in order to apply imaging and confocal Raman and fluorescence spectroscopy techniques on the analysis of HA. (C) 2008 Published by Elsevier B.V.

引用

页码：69 / 77

页数：9

共 66 条

[1] Influence of pH and ionic strength on removal processes of a sedimentary humic acid in a suspension of vermiculite [J].

Abate, G ;

Masini, JC .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2003, 226 (1-3) :25-34

[2]

[Anonymous], 1994, HUMUS CHEM GENESIS C

[3] FLUORESCENCE ENHANCEMENT FROM LANGMUIR-BLODGETT MONOLAYERS ON SILVER ISLAND FILMS [J].

AROCA, R ;

KOVACS, GJ ;

JENNINGS, CA ;

LOUTFY, RO ;

VINCETT, PS .

LANGMUIR, 1988, 4 (03) :518-521

[4]

Aroca R., 2006, Surface-Enhanced Vibrational Spectroscopy

[5] Atomic force microscopy of humic substances: Effects of pH and ionic strength [J].

Balnois, E ;

Wilkinson, KJ ;

Lead, JR ;

Buffle, J .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1999, 33 (21) :3911-3917

[6] Detection of PCBs in natural waters by front face fluorometry on solid sorbent on account of their fluorescence quantum yields and interaction with humic substances [J].

Belfatmi, R ;

Lamotte, M ;

Ait-Lyazidi, S ;

de Violet, PF .

CHEMOSPHERE, 2005, 61 (06) :761-769

[7] Comparative study of the morphology, aggregation, adherence to glass, and surface-enhanced Raman scattering activity of silver nanoparticles prepared by chemical reduction of Ag+ using citrate and hydroxylamine [J].

Cañamares, MV ;

Garcia-Ramos, JV ;

Gómez-Varga, JD ;

Domingo, C ;

Sanchez-Cortes, S .

LANGMUIR, 2005, 21 (18) :8546-8553

[8] FEASIBILITY STUDIES FOR THE DETECTION OF ORGANIC-SURFACE AND SUBSURFACE WATER CONTAMINANTS BY SURFACE-ENHANCED RAMAN-SPECTROSCOPY ON SILVER ELECTRODES [J].

CARRABBA, MM ;

EDMONDS, RB ;

RAUH, RD .

ANALYTICAL CHEMISTRY, 1987, 59 (21) :2559-2563

[9]

Constantino CJL, 2000, J RAMAN SPECTROSC, V31, P887, DOI 10.1002/1097-4555(200010)31:10<887::AID-JRS603>3.0.CO

[10]

2-V

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