Extraction of Sodium Chromate

Radioactive sodium chromate for the study of survival of red blood cells. I. The effect of radioactive sodium chromate on red cells.

Extraction of Carthamin from Carthamus Tinctorus and Investigating Its Dyeing of Wool Using Potassium DI-Chromate Mordant

Carthamin, the natural dye of carthamus tinctorius (Golrang) was separated by soxhlet extraction and further purified in good yields. Its mordant dyeing of wool, using potassium dichromate as mordant, showed a high washing fastness (above 4). Mordanting by "sweet chrome", "sour chrome", and "reduced chrome" proved that last one to be superior.

Valence states of plasma chromium in rats after intraperitoneal administration of sodium chromate.

It is well known that soluble chromates, when added to blood in vitro or in vivo, hardly interact with the plasma components and easily penetrate the erythrocytes, and that reduction to the trivalent species follows.1-3) However, in vitro reduction of chromium(VI) in human4) and rat5) plasma has been observed. Some problems of the fate of chromium(VI) in blood, especially in vivo remain unsolve...

The Effect of Chromic Mud Graining on the Technological Parameters of the Sodium Chromate Production Process

The most important solution in the new sodium chromate production process implemented in Alwernia Chemical Works is in-process recycling of chromic mud. This allows lessening the hazard to the natural environment resulting from released chromic waste. It also involves economical advantages. This paper presents studies on the optimisation of this process using of a fuzzy logic method. The influe...

Effect of Ascorbic Acid in Vivo on Labeling of Red Cells by Radioactive Sodium Chromate.

S INCE THE INITIAL work of Gray and Sterling,”2 the determination of red cell mass with radioactive sodium chromate has undergone several modifications. Read’ developed the technic of adding ascorbic acid in vitro to the blood-sodium chromate mixture to reduce chromate to trivalent chromium and prevent further uptake by red cells. The inhibition of chromium uptake by ascorbic acid supported the...