𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Flow spectrophotometric method for determination of hydrogen peroxide using a cation exchanger for preconcentration

✍ Scribed by A.M. Almuaibed; A. Townshend


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
418 KB
Volume
295
Category
Article
ISSN
0003-2670

No coin nor oath required. For personal study only.

✦ Synopsis


A flow spectrophotometric method for the preconcentration and determination of hydrogen peroxide is developed. It is based on the formation of the titanium(IV) peroxo complex and its retention on a minicolumn cation exchanger, elution with sulphuric acid and spectrophotometric detection at 410 nm. The calibration graph is linear over the range 4 x 10e6-6 x 10m5 M. The 2a detection limit is 1 X 10e6 M (34 ng ml-' and the exchange capacity is 1.1 mmol H,O, g-' dry weight.


πŸ“œ SIMILAR VOLUMES


A nonenzymatic method for determination
✍ Robert Ebermann; Armin Couperus πŸ“‚ Article πŸ“… 1987 πŸ› Elsevier Science 🌐 English βš– 402 KB

Reduction of hydrogen peroxide and organic peroxides (t-butyl hydroperoxide and linoleic acid hydroperoxide) was achieved with homovanillic acid as hydrogen donor in the presence of the triethylenetetramine-Fe3+ complex. By the catalytic action of this complex, homovanillic acid is oxidized to its f

Spectrophotometric flow-injection method
✍ A. Rivero Molina; E. Vereda Alonso; M. T. Siles Cordero; A. GarcΓ­a de Torres; J. πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 121 KB πŸ‘ 2 views

A simple, rapid, and accurate spectrophotometric flow-injection method was developed for the determination of sorbic acid in wines based on the oxidation of sorbic acid with K 2 Cr 2 O 7 /H 2 SO 4 at 100ЊC, followed by reaction of the resulting malonaldehyde with thiobarbituric acid, also at 100ЊC,