DEPTH PROFILING ANALYSIS OF ADSORBED SPECIES ON A SINGLE MICROPARTICLE WITH PHOTOACOUSTIC-SPECTROSCOPY

被引：11

作者：

HSUEH, YM ^{[1
]}

HARATA, A ^{[1
]}

KITAMORI, T ^{[1
]}

SAWADA, T ^{[1
]}

机构：

[1] UNIV TOKYO,FAC ENGN,DEPT MOLEC BIOL,TOKYO 113,JAPAN

来源：

ANALYTICAL SCIENCES | 1990年 / 6卷 / 01期

关键词：

depth profiling; metal-oxine chelate; Photoacoustic spectroscopy; single microparticle; solid adsorbent;

D O I：

10.2116/analsci.6.71

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel nondestructive evaluation method for the adsorption layer thickness of a single microparticle using the frequency characteristics of the photoacoustic signal magnitude and phase is proposed. The adsorption thickness of metal 8-quinolinol chelates on an Amberlite XAD-2 microparticle of about 300 um in diameter was estimated by the proposed method. Measurements were performed with a single particle, and adsorption thicknesses of 100 - 101 µm could be examined. A good agreement between the photoacoustic and microscopic determinations was obtained when the thermal diffusion length was longer than the adsorption thickness. The application range with respect to the relation between the thermal diffusion length and the adsorption thickness is discussed qualitatively on the basis of the experimental results of the frequency characteristics of the signal magnitude. © 1990, The Japan Society for Analytical Chemistry. All rights reserved.

引用

页码：71 / 75

页数：5

共 14 条

[1] THERMAL-DIFFUSIVITY AND THICKNESS MEASUREMENTS FOR SOLID SAMPLES UTILIZING OPTOACOUSTIC EFFECT [J].