Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Herbert Greschonig"'
Publikováno v:
Applied Organometallic Chemistry. 12:873-876
Arsenic compounds were determined in 21 urine samples collected from a male volunteer. The volunteer was exposed to arsenic through either consumption of codfish or inhalation of small amounts of (CH3)3As present in the laboratory air. The arsenic co
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 362:218-223
Capillary zone electrophoresis was used to separate arsenite, arsenate, dimethylarsinic and diphenylarsinic acid, methanearsonic acid, phenyl- and p-aminophenyl arsonic acid, phenylarsineoxide and phenarsazinic acid. Anionic and uncharged species wer
Autor:
Herbert Greschonig, Kurt J. Irgolic
Publikováno v:
ChemInform. 24
The determination of total arsenic and of arsenic compounds in biological and inorganic samples is a task frequently encountered by analysts. Several elecrochemical methods have been developed for the determination of total arsenic (generally after m
Autor:
Herbert Greschonig, Kurt J. Irgolic
Publikováno v:
Applied Organometallic Chemistry. 6:565-577
The determination of total arsenic and of arsenic compounds in biological and inorganic samples is a task frequently encountered by analysts. Several elecrochemical methods have been developed for the determination of total arsenic (generally after m
Autor:
Kurt Kalcher, W. Ng, M. Weißenbacher, Herbert Greschonig, Wing Hong Chan, Anastasios Voulgaropoulos
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 344:87-92
Peroxodisulphate (“persulphate”) may be determined by direct current voltammetry (DCV) using carbon paste electrodes chemically modified with Prussian Blue, iron(III)-hexacyanoruthenate(II) or iron(III)-hexacyano-osmate(II). The determination is
Autor:
Herbert Greschonig
Publikováno v:
Electroanalysis. 10:1288-1290
Polarography and cyclic voltammetry were used to investigate the electrochemical behavior of trimethylarsine oxide (TMAO), an important product of the natural arsenic cycle. A differential pulse polarographic method is proposed for the determination
Publikováno v:
Fresenius' Zeitschrift für analytische Chemie. 327:513-517
Gold(III) kann aus saurer, chloridhaltiger Losung mit einer mit Tri-n-octylphosphinoxid (TOPO) oder Tri-n-butylphosphat (TBP) modifizierten Kohlepasteelektrode extraktiv angereichert werden. Als voltammetrische Bestimmung eignet sich fur quantitative
Autor:
Herbert Greschonig, Otto Glatter
Publikováno v:
Mikrochimica Acta. 89:389-399
Proportionally spaced cubicB-splines are an appropriate function system for the approximation of titration curves and other sigmoidal functions. They give a smooth weighted leastsquares fit without instability problems. The degree of smoothing depend
Autor:
Herbert Greschonig, Otto Glatter
Publikováno v:
Mikrochimica Acta. 89:401-409
The equivalence point of potentiometric titration curves coinciding with the point of inflection is calculated from the maximum of the first derivative or the zero of the second derivative. The approximation of the curve is carried out by means of cu
Publikováno v:
Computers & Chemistry. 12:43-63
A program system for continuous spectrophotometric monitoring of voltammetric measurements has been developed. It consists of the BASIC program SPELECTRO for the diode array spectrophotometer HP 8451A, which controls the recording of u.v./vis spectra