SURFACE-ENHANCED RAMAN-SPECTROSCOPY AT A SILVER ELECTRODE AS A REAL-TIME DETECTOR IN FLOWING STREAMS

被引：25

作者：

POTHIER, NJ ^{[1
]}

FORCE, RK ^{[1
]}

机构：

[1] UNIV RHODE ISL,DEPT CHEM,KINGSTON,RI 02881

来源：

APPLIED SPECTROSCOPY | 1992年 / 46卷 / 01期

关键词：

SURFACE-ENHANCED RAMAN SPECTROSCOPY; SILVER ELECTRODE; DNA BASES; FLOWING STREAMS;

D O I：

10.1366/0003702924444533

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

An analytical application for Surface-Enhanced Raman Spectroscopy at a silver electrode is described. Real-time SER spectra of adenine and cytosine have been recorded in a 10-mu-L spectroelectrochemical flow cell under flowing conditions. Charge-coupled-device detection allowed high-quality spectra spanning a approximately 1200 cm-1 region to be recorded with integration times of 4 seconds. A low-power He . Ne laser was used as a source. SERS at the silver electrode offers rapid time response to adsorption/desorption by appropriate potential modulation. The technique is extremely reproducible and insensitive to temperature and flow rate. The effects of incident photon energy and applied potential on the intensity of the Raman signal are discussed.

引用

页码：147 / 151

页数：5

共 25 条

[1] NEAR-INFRARED RAMAN-SPECTROSCOPY OF LIQUIDS AND SOLIDS WITH A FIBEROPTIC SAMPLER, DIODE-LASER, AND CCD DETECTOR [J].