The spectrophotometric determination of scandium with eriochrome brilliant violet B
β Scribed by Katsuya Uesugi
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- English
- Weight
- 319 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0003-2670
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## Abstract Copper has been determined by a modified dualβwavelength spectrophotometric (DWS) method, using the reaction of Cu^II^ with eriochrome blue black R (EBBR) at pH 12, which is sensitive and selective in the presence of both pentadecyltrimethylammonium bromide (PTMAB) and ascorbic acid. Th
Equilibria in the Al 3f-H+-eriochrome cyanine R (ECR) system were studied by potentiometry and spectrophotometry in 0.10 M KC1 at 25Β°C and p[H+] 2.5-6.5.
A flow-injection system is proposed for the rapid determination of trace amounts of formaldehyde based on its inhibition of the Brilliant Green-suiphite reaction at pI1 7. Formaldehyde in the range 40-3000 ng ml-' can be determined at a rate of 35 f 5 samples h -I. The limit of detection was 20 ng m