摘要:

The application of a cupric ion-selective electrode with a membrane of mixed Ag2S-CuS to measure the activity of Hg(II) is presented. The linear electrode response curve which covers near three decades, from 10−5to 10−2mol dm−3, of mercuric concentration range was obtained, under background of acetate buffer.

ISSN:0003-2719    

DOI:10.1080/00032718108059809

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

A new type of all solid-state electrode with a silver sulphide sensor is described. The electrode is very easy to construct and is relatively inexpensive. Comparaison is made with a similar commercial electrode by direct potentiometry using cysteine solutions.

ISSN:0003-2719    

DOI:10.1080/00032718108059810

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Trace amounts of phosphorus in various low alloy steels were determined by ICP emission spectrometry. Coexisting copper, a spectroscopically interfering element, was removed by solvent extraction with DBDTC. The proposed method is simple and does not require a monochromator with high resolving power nor a vacuum system.

ISSN:0003-2719    

DOI:10.1080/00032718108059811

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Free bromine and bromamine analysis by the diethyl-p. phenyl-lene-diamine (DPD) colorimetric method requires some care when chloride and bromide are present at seawater concentration. If no particular problem is encountered in mono and dibromamine determination, on the contrary the analysis of either free bromine or that of a free bromine and tribromamine mixture can induce errors of at least twenty per cent in the total residual oxidant concentration due to halogen loss. In order to prevent that phenomenon, iodide addition into the phosphate buffer and DPD mixture is necessary before the sample introduction. In these conditions the results are in good agreement with those of the phenol red method.

ISSN:0003-2719    

DOI:10.1080/00032718108059812

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Some beverage and meat products are examined for the presence of N-nitrosodimethylamine by both Low- and High- Resolution Chemical Ionization Mass Spectrometry, compared with that by Electron Impact method to assess their reliability. All the data obtained from these MS methods have been treated by Statistical analysis, and the result obtained shows that the variances are not significant between each other, but the Low- Resolution Electron Impact MS with single ion monitoring gives rise to inconsistency among them.

ISSN:0003-2719    

DOI:10.1080/00032718108059813

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

An extremely simple, sensitive and selective microdetermination of polymer flocculants in mine water is feasible by measuring the laminar flow rate through membrane filter under vacuum.

ISSN:0003-2719    

DOI:10.1080/00032718108059814

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

A specific and non-destructive test for basic esters of benzilic and α-glycolic acids in water is described. The compounds are collected on a glass fiber filter as water insoluble complexes with sodium tetraphenylboron. The filter is dried and sprayed with a 2-diphenylacetyl-l, 3-indandione-l-imine derivative. A positive test is the visual observation of fluorescence.

ISSN:0003-2719    

DOI:10.1080/00032718108059815

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Reactions of two nitrides, an oxide (α-SiaNi, A1N and α-AI2O3) and bath metals (platinum, iron and tin) in graphite capsules were investigated in vacuum fusion analysis by measuring gas extraction curves with a quadrupole mass spectrometer which can simultaneously measure nitrogen and carbon monoxide from the furnace. From the characteristic gas extraction patterns of each bath metals, gas release reaction mechanisms and their temperatures were studied.

ISSN:0003-2719    

DOI:10.1080/00032718108059816

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0003-2719    

DOI:10.1080/00032718108059808

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor