23 Terms
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Analytical chemistry
Industry: Chemistry
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Analytical chemistry
Sublimatography
Chemistry; Analytical chemistry
A procedure of fractional sublimation in which a solid mixture is separated into bands along a condensing tube with a temperature gradient.
Macroanalysis
Chemistry; Analytical chemistry
Qualitative or quantitative analysis of chemicals that are in quantities of the order of grams.
Colour standard
Chemistry; Analytical chemistry
Liquid solution of known chemical composition and concentration, hence of known and standardised color, used for optical analysis of samples of unknown strength.
Subsample
Chemistry; Analytical chemistry
A portion taken from a sample of material for which a chemical analysis has been specified.
Magnesia mixture
Chemistry; Analytical chemistry
Reagent used to analyse for phosphorus; consists of the filtered liquor from an aqueous mixture of ammonium chloride, magnesium sulfate, and ammonia.
Colour test
Chemistry; Analytical chemistry
The quantitative analysis of a substance by comparing the intensity of the colour produced in a sample by a reagent with a standard colour produced similarly in a solution of known strength.
Sulphur number
Chemistry; Analytical chemistry
The number of milligrammes of sulphur per 100 millilitres of sample, determined by electrometric titration; used in the petroleum industry for oils.
