INSITU DETECTION OF MONOVALENT COPPER IN AEROSOLS BY PHOTOEMISSION

被引:6
作者
AMMANN, M
HAUERT, R
BURTSCHER, H
机构
[1] SWISS FED INST TECHNOL,CH-8093 ZURICH,SWITZERLAND
[2] SWISS FED LABS MAT TESTING & RES,CH-8600 DUBENDORF,SWITZERLAND
来源
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1992年 / 343卷 / 06期
关键词
D O I
10.1007/BF00322156
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
In situ information on nanoparticle surface chemistry and modes of particle growth is obtained in gas suspension by the technique of photoelectric charging of particles (PCP) which depends on the surface chemical compositon as well as the electronic structure of the particles via the spectral dependence of the photoelectric yield. With CuCl particles, photoelectric charging is about 100 times more efficient compared to other divalent transition metal compounds. Therefore, particles containing monovalent Cu can be detected with extremely high sensitivity of below 10 ng/m3. In atmospheric aerosols emitted from volcanoes, the relation of solid state oxidation/reduction in Fe1-xCuxCl2 resulting in monovalent Cu for x < 0.4 is important. As an example of the PCP technique this relation is monitored in laboratory generated aerosols. The nanoparticles are also precipitated onto a substrate where their surface chemical composition is analyzed by XPS which is important for the interpretation of the results obtained by photoelectric charging.
引用
收藏
页码:491 / 496
页数:6
相关论文
共 19 条
[1]   CHARACTERIZATION OF ULTRAFINE AEROSOL-PARTICLES IN MT-ETNA EMISSIONS [J].
AMMANN, M ;
BURTSCHER, H .
BULLETIN OF VOLCANOLOGY, 1990, 52 (08) :577-583
[2]  
AMMANN M, 1991, UNPUB J GEOPHYS RES
[3]  
Bailar J. C., 1973, COMPREHENSIVE INORGA
[4]  
BRIGGS D, 1990, PRACTICAL SURFACE AN
[5]   PROBING AEROSOLS BY PHOTOELECTRIC CHARGING [J].
BURTSCHER, H ;
SCHERRER, L ;
SIEGMANN, HC ;
SCHMIDTOTT, A ;
FEDERER, B .
JOURNAL OF APPLIED PHYSICS, 1982, 53 (05) :3787-3791
[6]  
BURTSCHER H, 1986, J AEROSOL SCI, V17, P669
[7]   PHOTOELECTRON-SPECTROSCOPY INDUCED BY X-RAYS AND THE DISTRIBUTION OF CU+ AND CU2+ COPPER IONS IN COPPER FERRITES [J].
DHUYSSER, A ;
LEREBOURSHANNOYER, B ;
LENGLET, M ;
BONNELLE, JP .
JOURNAL OF SOLID STATE CHEMISTRY, 1981, 39 (02) :246-256
[8]   DENSITY OF VALENCE STATES OF CUCL, CUBR, CUI, AND AGI [J].
GOLDMANN, A ;
TEJEDA, J ;
SHEVCHIK, NJ ;
CARDONA, M .
PHYSICAL REVIEW B, 1974, 10 (10) :4388-4402
[9]  
GOLDMANN A, 1974, PHYS STATUS SOLIDI, V81, P9
[10]  
Hidy G., 2012, AEROSOLS IND ENV SCI