Estimation du diamètre des micelles d'une suspension colloïdale de sélénium par spectrophotométrie

✍ Scribed by A. Watillon; F. van Grunderbeeck

• Publisher: Wiley (John Wiley & Sons)
• Year: 2010
• Weight: 379 KB
• Volume: 65
• Category: Article
• ISSN: 0037-9646
• DOI: 10.1002/bscb.19560650704

✦ Synopsis

Estimatioii c h i diarn6trc cles micellps d 'une suspension rolloitlale de s C 1 C n i u m par spectrophoto-P K1611aicl Par A. WATILLON e t F. VAN GRUNDERBEECK (*) (Bruxelles)

S u n MARY

In a preceding paper, we proposed a counting method permitting the precise determination of particle sizes in lyophobic colloids. Results obtained by this method in the case of Selenium hydrosols were controlled by electron-microscopy. The latter technique was also used in verifying isodispersity of the suspensions.

In the present paper, we propose a simple spectrophotornetric method calibrated by above mentioned absolute techniquesfor discriminating between isodispersed and poly dispersed Selenium Sols and for rapid estiniation of the average siLe of the Seleniniurn particles. (*) Titulaire d'une bourse de recherches de 1'1. R. S. I. A. ( l ) A. WATILLON et F. VAN GRVNDERBEECK, Bull. SOC. Chim. Belg., 63, 115-132 (1954).

(2) G. MIE, Ann. Phys., (4) 35, 377 (1908). (3) F. B. GRIBNAU, Kolloid Z . , 77, 289 (1936); 82, 15 (1938). (*) R. s. KRISnNAN, P T O C . 1;ndian &ad. SCi., 5, 407 (1937).