摘要:

A technique for low cell constant conductivity measurements is described. The technique is based on a four terminal inductive voltage/ current divider bridge, operated at 100 Kc, which enables:

ISSN:1073-9149    

DOI:10.1080/10739147508543388

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

An apparatus is described for measuring the evolution rate of gas arising from an electrochemical or chemical reaction. The main feature of the apparatus is that the time of measurement is short and that the results are recorded electrically. Hence, both the gas evolution rate and its change can be followed, and the measurements can be automated. The apparatus can be used in corrosion testing and many electrochemical and chemical kinetics studies.

ISSN:1073-9149    

DOI:10.1080/10739147508543389

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

A potentiostat employing digital selection of sweep range, sweep rate, and cell current measurement time has been built for use in staircase voltammetry, square wave polarography and voltammetry, and tast polarography. The use of these techniques enables background current reduction and therefore provides high sensitivity. The method of cell potential generation and control allows very high measurement precision. The instrument can be operated either manually or under complete computer control.

ISSN:1073-9149    

DOI:10.1080/10739147508543390

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

A system for dynamical measurement of Seebeck coefficients materials with resistivities-cm is described, with particular attention given to the instrumentation problem. Results are presented which show the system's performance on NiO and VgO.

ISSN:1073-9149    

DOI:10.1080/10739147508543391

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

An easily-constructed interface is described that permits acquisition and processing of data by a programmable calculator from a semi-automated atomic absorption spectrophotometer used in trace metal analysis.

ISSN:1073-9149    

DOI:10.1080/10739147508543392

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

The use of a Wang 600 calculator, interfaced to a digital transient recorder in fast reaction studies, is described. Results for first-order reactions are given and the application to second-order cases is discussed.

ISSN:1073-9149    

DOI:10.1080/10739147508543393

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

In electrochemical studies of low level environmental contaminants at the National Water Quality Laboratory, a versatile polarographic instrument with the stability, sensitivity, and low-noise characteristic of instruments with solid-state amplifiers was desired. Such instruments are now commercially available, at prices ranging from approximately $2,500 to over $10,000. In the lower price ranges some loss of versatility is suffered because of design limitations on scan rates, current sensitivity, switching, and external connections to the operational amplifiers, for use with pulse techniques.

ISSN:1073-9149    

DOI:10.1080/10739147508543394

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

ISSN:1073-9149    

DOI:10.1080/10739147508543395

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

ISSN:1073-9149    

DOI:10.1080/10739147508543396

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

ISSN:1073-9149    

DOI:10.1080/10739147508543397

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor