Analytical chemistry

Analytical chemistry

Industry: Chemistry

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Analytical chemistry

phthalate buffer

Chemistry; Analytical chemistry

Laboratory pH reference solution made of potassium hydrogen phthalate, KHC 8 H 4 O 4 ; at 0.05 molal, the pH is 4.008 at 25_C.

duplicate sample

Chemistry; Analytical chemistry

A second sample randomly selected from a material being analyzed in order to evaluate sample variance.

alkalimetry

Chemistry; Analytical chemistry

Quantitative measurement of the concentration of bases or the quantity of one free base in a solution; techniques include titration and other analytical methods.

plate theory

Chemistry; Analytical chemistry

In gas chromatography, the theory that the column operates similarly to a distillation column; for example, chromatographic columns are considered as consisting of a number of theoretical plates, ...

elaidin reaction

Chemistry; Analytical chemistry

A test that differentiates nondrying oils such as olein from semidrying oils and drying oils; nitrous acid converts olein into its solid isomer, while semidrying oils in contact with nitrous acid ...

alkalometry

Chemistry; Analytical chemistry

The measurement of the quantity of alkaloids present in a substance.

A method of chemical analysis based on the optical activity of the substance being determined; the measurement of the extent of the optical rotation of the substance is used to identify the substance ...