摘要:

Iron (III) was rapidly extracted as its ternary complex with tributyl phosphate and N-phenly1-2-furylacrylohydroxamic acid (PFHA) from weakly acidic (pH 1.0-1.5) solutions into isobutyl methyl ketone and was determined atomic absorption spectrometrically. The method tolerated the presences of a large number of anions and cations commonly associated with iron, and was successfully tested with certified samples of coal fly ash, alloys, and plant tissues. It was also applied to the analysis of animal tissues, natural waters, and wastewaters; validating it by standard addition technique. PFHA was selected from nine new hydroxamic acids.

ISSN:0003-2719    

DOI:10.1080/00032718808066340

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

A simple, rapid, reliable method for detection of aflatoxins in food and feeds by Pressure Minicolumn has been developed. The technique employs commonly available glass syringes which are tightly packed with certain adsorbants. The presence of aflatoxins is observed as a compact bluish fluorescent hand under long range UV light. Further, chemical confirmatory tests have also been incorporated in the same and the combination of trifluoroacetic acid-sulphuric acid was found to be the best. The technique has been successfully put to use for detecting contaminated samples of food and feed.

ISSN:0003-2719    

DOI:10.1080/00032718808066341

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

Retention data are presented for homovanillic acid, vanillic acid, phenylacetic acid, benzoic acid, p-hydroxyphenylacetic acid and 3,4-dihydroxyphenylacetic acid on reversed phase C18columns with methanolic-acetic acid buffers. These data are fitted to a model and window diagrams are constructed from calculated model parameters. The different window diagrams obtained for the different percentage methanol solvents are shown. The retention data is then fit to a two factor reponse surface model (% methanol and pH).

ISSN:0003-2719    

DOI:10.1080/00032718808066342

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

A new preconcentration procedure using inclusion of the metal dithiocarbamate complexes into a thin polystyrene film is developed. The method is applied for determination of Cd,Co,Cu,Fe,Ni,Pb and Zn in high purity KI,LINO3, BaCl2and Y2O3by arc-source AES. The relative standard deviation is 5-12% at concentration range 5.10−5-5.10−6%. The method permits the determination of 2.10−6% Pb and Cd, 5.10−6% Co,Cu,Fe,Ni,Zn.

ISSN:0003-2719    

DOI:10.1080/00032718808066343

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

ISSN:0003-2719    

DOI:10.1080/00032718808066344

出版商:Taylor & Francis Group    

年代:1988

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:10.1080/00032718808066329

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor