Analytical chemistry

Analytical chemistry

Industry: Chemistry

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Analytical chemistry

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Chemistry; Analytical chemistry

An individual portion of material of a group of samples collected by a single operation of a sampling device from parts of a lot that are separated in time or space.

chemical dating

Chemistry; Analytical chemistry

The determination of the relative or absolute age of minerals and of ancient objects and materials by measurement of their chemical compositions.

solvent front

Chemistry; Analytical chemistry

In paper chromatography, the wet moving edge of the solvent that progresses along the surface where the separation of the mixture is occurring.

independent migration law

Chemistry; Analytical chemistry

The law that each ion in a conductiometric titration contributes a definite amount to the total conductance, irrespective of the nature of the other ions in the electrolyte.

1. A substance whose physical appearance is altered at or near the end point of a chemical titration. 2. A substance whose color varies as the concentration of hydrogen ions in the solution to which ...

spark explosion method

Chemistry; Analytical chemistry

A technique for the analysis of hydrogen; the sample is mixed with an oxidant and exploded by a spark or hot wire, and the combustion products are then analyzed.