The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 1981
Filed:
Jan. 12, 1981
Maurice R Smith, Cleveland, TN (US);
Harvey B Cochran, Englewood, TN (US);
Olin Corporation, New Haven, CT (US);
Abstract
A method for determining low level concentrations of alkaline earth metals in a concentrated aqueous alkali metal chloride brine containing alkaline earth metal ions comprises heating a sample of the brine to a temperature sufficient to remove water and form anhydrous alkali metal chloride. The anhydrous alkali metal chloride is then further heated to a temperature range in which the alkali metal chloride undergoes a change. The anhydrous alkali metal chloride is then vaporized and the alkaline earth metals atomized and passed through an analyzer where the concentration of alkaline earth metals are determined. Using the method of the present invention, alkaline earth metals such as calcium can be detected in concentrations as low as 1 part per billion, while magnesium can be detected in concentrations as low as 0.4 parts per billion.