Published July 22, 1980
| Version v1
Patent
Open
Determination of chromate ion in drilling mud filtrates
Creators
Description
A method of determining the amount of chromate ion in an aqueous drilling mud filtrate containing organic color bodies such as lignosulfate wherein the method comprises: (A) treating the aqueous filtrate with an effective amount of hydrogen peroxide to destroy said color bodies, and (B) measuring the amount of chromate ion in the filtrate by means of a spectrophotometer
Availability note (English)
MF available from INIS under the Report Number; U.S. Commissioner of Patents, Washington, D.C. 20231, USA, $.50.Files
12587418.pdf
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Additional details
Additional titles
- Augmented title (English)
- Patent
Publishing Information
- Imprint Pagination
- v p.
- IPC:
- Int. Cl.G01N 33/24.
- IPC
- Int. Cl.G01N 33/24.
- Patent number
- US patent document 4,213,762/A/
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 12587418
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- CHEMICAL COMPOSITION; CHROMATES; COLOR; HYDROGEN PEROXIDE; LIGNITE; QUANTITATIVE CHEMICAL ANALYSIS; SPECTROPHOTOMETERS; SPECTROPHOTOMETRY; SULFONATES; TESTING
- Descriptors DEC
- CHEMICAL ANALYSIS; CHROMIUM COMPOUNDS; COAL; ENERGY SOURCES; FOSSIL FUELS; FUELS; HYDROGEN COMPOUNDS; MEASURING INSTRUMENTS; OPTICAL PROPERTIES; ORGANIC COMPOUNDS; ORGANIC SULFUR COMPOUNDS; ORGANOLEPTIC PROPERTIES; OXYGEN COMPOUNDS; PEROXIDES; PHYSICAL PROPERTIES; TRANSITION ELEMENT COMPOUNDS