Total Solids in Natural Brines

Abstract

workers omit determination of total solids in brines because it is obviously a difficult determination of questionable reliability. It is rather obvious, for instance, that the heat applied is likely to decompose some salts present or fail to dehydrate them.Sweeney and Withrow (S) state that "brines rich in calcium chloride require a rather high temperature, above 160°C ., to

Brine Purification The System Sodium Bicarbonate–Sodium Chloride–Magnesium Carbonate–Water

“…The end point in each case was matched with a reference solution. Magnesium was either determined gravimetrically, weighing as magnesium ammonium phosphate hexahydrate, or in some cases by a colorimetric method (11). A portion of the solution containing 0.02 to 0.04 mg. of magnesium was pipetted into a 50-cc.…”

Water of Crystallization in Total Solids of Water Analysis

“…The "Official Methods" (1) recommend drying at 100°or 180°C. Individual investigators differ widely in their practices; Howard (2), for example, prefers drying at 180°C ., and Zinzalian and Withrow (6) at 750°C. Discussion of Changes during Evaporation 1.…”

“…Since it was known that one milliequivalent of bicarbonate in solu-tion results in one milliequivalent of carbonate in the residue, the author used 30.0, the equivalent combining weight of C03 and 3.20, the concentration of HCOa, to calculate the corresponding p. p. m. The water of crystallization was calculated in accordance with the principles outlined in Table I. e Na and K are treated as a single factor for the sake of brevity and on account of the low concentration of K. 6 Probable partial decomposition of magnesium nitrate is disregarded.…”

Determination of Total Dissolved Solids in Water Analysis

“…to constant weight, although the loss in chloride is greater when the residue is heated from above. For highly concentrated waters that contain considerable calcium, magnesium, and sodium chlorides, such as brines from oil fields, Zinzalian and Withrow (9) recommend drying the residues at 750°C ., making a correction for the amount of calcium and magnesium chlorides in the residue on evaporation. For waters of high concentration Reistle and Lane (6) determined the specific gravity of a sample and used this determination as the basis of the choice of the size of sample to be analyzed.…”