Apparatus and method for measuring halogen content

Details Apparatus and method for measuring halogen content Apparatus and method for measuring halogen content

1990-08-06

1991-05-07

Wallen, Thomas

Chemistry: analytical and immunological testing

Halogen containing

Carbon containing compound

436 60, 436140, 436165, 422 61, G01N 3300

Patent

active

050136674

ABSTRACT:
An apparatus, which may be embodied in a disposable field test kit, and a test method serves to measure the halogen (bromine, chlorine, iodine) content, especially the chlorine content, of hydrocarbon liquids. The apparatus includes a sampling device in which a quantity of the hydrocarbon liquid, such as a used oil, is suctioned into a frangible collector such as a capillary tube to control sample size, and the tube is deposited into a flexible container which also contains frangible ampules holding pre-measured quantities of reagents, including a solvent for the sample. The container is squeezed to break the tube and ampules to release their contents in prescribed order. The sample is first solvated, then reacted with an alkali metal reagent which will form halides from halogen material present, extracted into an aqueous phase, titrated, and contacted with a color change indicator which acquires a characteristic color dependent upon the halogen material content.

REFERENCES:
patent: 3068855 (1962-12-01), Furlong
patent: 3498751 (1970-03-01), Newhart et al.
patent: 4686192 (1987-08-01), Fisher

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