摘要:

Methodology for the analysis of compounds in seawater has developed rapidly during recent years, together with a markedly increased interest in chemical data to characterize the marine environment. Flow injection analysis (FIA) can play a significant role in laboratory automation for many traditional wet chemical methods, and can serve as the basis for new methods which have no conventional analog. The FIA technique permits the analysis of a great number of samples, rapidly and reliably. This review discusses the present status and potential applications of FIA in the determination of anions and organic species in seawater analysis.

ISSN:1040-8347    

DOI:10.1080/10408349108051638

出版商:Taylor & Francis Group    

年代:1991

数据来源: Taylor

摘要:

If rapid quantitative electrochemical analysis was to evolve, the charging current that plagues electrochemical measurements had to be minimized. These currents occur when rapidly changing potentials are applied to an electrode solution interface. This initated the research of modified potential waveforms such as those used in pulse and square wave polarography. These methods have been shown to filter out much of the effect of charging current and are used extensively in routine analysis. Similarly, pulse methods coupled with cyclic voltammetry also reduce noise and analysis times and in addition provide more qualitative information. A historical review of the various techniques that reject charging current is discussed with emphasis placed on recent studies with modified cyclic voltammetry waveforms.

ISSN:1040-8347    

DOI:10.1080/10408349108051639

出版商:Taylor & Francis Group    

年代:1991

数据来源: Taylor

摘要:

Thiosemicarbazones (TSC) and semicarbazones (SC) are a class of compounds obtained by condensing thiosemicarbazide or semicarbazide with suitable aldehydes or ketones. The active grouping for chelation is shown in Structure I.

ISSN:1040-8347    

DOI:10.1080/10408349108051640

出版商:Taylor & Francis Group    

年代:1991

数据来源: Taylor

摘要:

Inverse gas chromatography is presented as a method of characterization of polymers, fibers, silicas, surfactants, and other materials. Theoretical background, parameters used for description of material's properties, data reduction process, preparation of columns, as well as reported results from 145 references are reviewed and discussed.

ISSN:1040-8347    

DOI:10.1080/10408349108051641

出版商:Taylor & Francis Group    

年代:1991

数据来源: Taylor

ISSN:1040-8347    

DOI:10.1080/10408349108051637

出版商:Taylor & Francis Group    

年代:1991

数据来源: Taylor