## Abstract Aqueous formaldehyde solutions of mole fraction from 0.05 to 0.20 were studied by Raman spectroscopy at temperatures up to 180 Β°C. The previously unreported Raman spectrum of formaldehyde under its nonβhydrated form H~2~CO has been identified, in addition to the already known bands from
Polarographic measurement of H2 in aqueous solutions
β Scribed by William J. Sweet; Jeffrey P. Houchins; Paul R. Rosen; Daniel J. Arp
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 256 KB
- Volume
- 107
- Category
- Article
- ISSN
- 0003-2697
No coin nor oath required. For personal study only.
β¦ Synopsis
An inexpensive circuit designed for polarographic measurement of dissolved H, over a wide concentration range is described. Examples of its application to measurements of hydrogenase and nitrogenase activities are presented.
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## Electrochemical behavior of 4-amino-2-methyl-1-naphthol hydrochloride (VK,) has been studied by dc and ac polarography in order to determine the applicability of these methods to the determination of VK, in aqueous solution. VK, exhibits two well-defined anodic waves on dc polarograms, one of w
A method i s described f o r the preparation of [ 01-hydrogen peroxide i n an aqueous solvent of natural isotopic abundance through the autoxidation of 2-ethyl anthrahydroquinol w i t h gaseous I8O2.
## 2. 4-Dinitrophenol (DNP) is polarographically reduced in aqueous buffered solutions along The height of the first-wave is two or three diffusion-controlled waves depending on the pH. practically independent of pH. hydroxylamine stage. steps which manifest the presence of bonded and non bonded st