Analytical chemistry

Analytical chemistry

Industry: Chemistry

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Analytical chemistry

Base-line technique

Chemistry; Analytical chemistry

A method for measurement of absorption peaks for quantitative analysis of chemical compounds in which a base line is drawn tangent to the spectrum background; the distance from the base line to the ...

Quantitative analysis

Chemistry; Analytical chemistry

The analysis of a gas, liquid, or solid sample or mixture to determine the precise percentage composition of the sample in terms of elements, radicals, or compounds.

Equilibrium still

Chemistry; Analytical chemistry

Recirculating distillation apparatus (no product withdrawal) used to determine vapor-liquid equilibria data.

Particle counting

Chemistry; Analytical chemistry

Microscopic or photomicrographic technique for the visual counting of the numbers of particles in a known quantity of a solid-liquid suspension.

Derivative polarography

Chemistry; Analytical chemistry

Polarography technique in which the rate of change of current with respect to applied potential is measured as a function of the applied potential (di/dE versus E, where i is current and E is applied ...

Wall-coated capillary column

Chemistry; Analytical chemistry

A capillary column characterised by a layer of stationary liquid coated directly on the inner wall of a coiled capillary tube.

Particle-induced x-ray emission

Chemistry; Analytical chemistry

A method of trace analysis in which a beam of ions is directed at a thin foil on which the sample to be analysed has been deposited, and the energy spectrum of the resulting x-rays is measured.