ISSN:
0377-0486
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
In view of the reported extreme sensitivity of surface enhanced Raman spectroscopy, the potential of colloidal silver and gold sols for the purpose of semi-quantitative trace analysis of organic molecules was investigated. High irreproducibility in Raman intensities is reported regarding most of the variables that come into play when preparing the sols, e.g. stirring rate, addition time of chloride ions and ageing. Experimental enhancement factors differ by orders of magnitude even for sols prepared from the same recipe. The value of colloidal SERS for analytical purposes, in particular when employing silver sols, therefore seems to be limited to qualitative analysis.
Additional Material:
10 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jrs.1250240910
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