Filters
Results 1 - 10 of 14
Results 1 - 10 of 14.
Search took: 0.026 seconds
| Sort by: date | relevance |
[en] A determination of iodide with catalytic oxidation of p-phenetidine is described. A dye is formed with a maximum of absorption at 490 nm. The law of Lambert-Beer is obeyed between 0.6 and 2.2 ppm. Some of the interferents are examined. (Author)
Journal
Mikrochimica Acta; ISSN 0026-3672; 
; v. 2(1-2); p. 5-8
; v. 2(1-2); p. 5-8
[en] A new method for the spectrophotometric determination of scandium by means of a coloured complex formed with salicylaldehyde and 2-aminobenzenearsonic acid is described. Lambert-Beer's law is followed in the range of 0.2 - 2.0 μg/ml of the final solution. The maximum amounts of 39 ions that may be present without interfering in the method are listed. (Author)
[pt]
Descreve-se um novo metodo espectrofotometrico para determinar o escandio por meio do complexo colorido formado com salicilaldeido e acido 2-aminobenzenoarsonico. A lei de Lambert-Beer e seguida entre 0,2 e 2,0 μg/ml na solucao final. Sao dadas as quantidades maximas de 39 ions que podem estar presentes sem interferir. (Autor)Journal
Quimica Nova; ISSN 0100-4042; ; v. 7(3); p. 180-184
; v. 7(3); p. 180-184
[en] A sensitive and selective method of spectrophotometric determination of vanadium with 2,7-diaminofluorene is described. Lambert-Beer's law is strictly obeyed between 0.1 and 1.4 ppm. 45 substances and ions concerning their interference are studied. A simple method for determination of vanadium in cast-iron and steels is described. (Author)
Journal
Mikrochimica Acta; ISSN 0026-3672; ; v. 2(5/4); p. 317-320
; v. 2(5/4); p. 317-320
No abstract available
Journal
Ciencia e Cultura; ISSN 0009-6725; ; v. 33(7); p. 330
; v. 33(7); p. 330
No abstract available
Journal
Ciencia e Cultura; ISSN 0009-6725; ; v. 33(7); p. 323-324
; v. 33(7); p. 323-324
| 1 | 2 | Next |