ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Semiquantitative paper-chromatographic microdetermination of silica in the presence of phosphate, carbonate, sulfate, and arsenate

E. Malý

Institute of Industrial Hygiene and Accusational Medicine, in Bratislava, Czechoslovakia

Abstract: Sol. silicates derived from SiO₂, by alkali fusion were sepd. from a mixt. of phosphates, carbonate, sulfate and arsenate by 2 solvent systems. System A was composed of Whatman No. 2 paper, satd. aq. Sr(OH)₂ (ascending, 17 cm./15 hrs.) and system B, of Whatman 1 paper, 96% EtOH, satd. sq. Sr(OH)₂ soln. 23:25 (15 cm./5 hrs.). Faintly yellow-green fluorescing spots of Sr silicate were outlined in ultraviolet light and evaluated planimetrically. The av. areas of Sr silicate spots were 497,323,173, and 76 sq. mm. in system A, and 1052, 768, 461, and 159 sq. mm. in system B.

Full paper in Portable Document Format: 1511-12a918.pdf (in Slovak)

Chemical Papers 15 (11-12) 918–921 (1961)