Analytical chemistry

Analytical chemistry

Industry: Chemistry

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Analytical chemistry

Derivative thermometric titration

Chemistry; Analytical chemistry

The use of a special resistance-capacitance network to record first and second derivatives of a thermometric titration curve (temperature versus weight change upon heating) to produce a sharp ...

Washing

Chemistry; Analytical chemistry

1. In the purification of a laboratory sample, the cleaning of residual liquid impurities from precipitates by adding washing solution to the precipitates, mixing, then decanting, and repeating the ...

Particle-scattering factor

Chemistry; Analytical chemistry

Factor in light-scattering equations used to compensate for the loss in scattered light intensity caused by destructive interference during the analysis of macromolecular compounds.

Descending chromatography

Chemistry; Analytical chemistry

A type of paper chromatography in which the sample-carrying solvent mixture is fed to the top of the developing chamber, being separated as it works downward.

Water absorption tube

Chemistry; Analytical chemistry

A glass tube filled with a solid absorbent (calcium chloride or silica gel) to remove water from gaseous streams during or after chemical analyses.

Partition chromatography

Chemistry; Analytical chemistry

Chromatographic procedure in which the stationary phase is a high-boiling liquid spread as a thin film on an inert support, and the mobile phase is a vaporous mixture of the components to be ...