摘要:

For lack of space, methods for the determination of other types of aerotoxicants have not been discussed. For example, carbon monoxide-which has killed many individuals in confined areas and which is said to affect the central nervous system even at relatively low levels558-has been reviewed elsewhere.559Others like sulfur trioxide and nitrogen dioxide could be considered. Actually, long, thorough, and separate reviews on the analysis of each of the common air-pollutant gases would be invaluable.

ISSN:0007-8980    

DOI:10.1080/1040834ve08542737

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

摘要:

It is possible to bright-plate both Re and Tc metals from aqueous media in a reasonably quantitative fashion, but the deposit is not favorable for weighing. The (VII)-states in 4Mperchloric acid undergo initial 4- or 3-electron reduction-steps in polarography at the d.m.e. These waves are suitable for analyses of 10−3— 10−4Msolutions within ± 1% if necessary precautions are taken. The four-electron coulometric reduction of pertechnetate can probably be refined to better than ± 0.5%. Several usable amperometric techniques exist for the determination of rhenium. The direct chemical reduction of some technetium (VII) in aqueous acidic media by contact with mercury is an important consideration in many electrochemical techniques.

ISSN:0007-8980    

DOI:10.1080/1040834ve08542738

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

ISSN:0007-8980    

DOI:10.1080/1040834ve08542739

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor