~~Two Branches of Analytical Chemistry
Two Branches of Analytical Chemistry - раздел Образование, Part One THE PREDICATE The Relatively Small Chcmical Manufacturing Plants Producing Such Chcmicals A...
The relatively small chcmical manufacturing plants producing such chcmicals as alkalis, sulphuric acid, ctc., indeed, some of the factories making consumer goods and employing chcmicals in the processing, soon found it desirable to employ what was most frequently referred to as a "works chemist". His duties consisted laigcly of performing routine tests to determine the quality of the raw materials coming in, so to speak, the back door, and the finished goods going out of the front. In nearly every instance the "works chemist" reported to the factory manager. The analyst's prestige within the oiganization was largely that of a technician, rather than a person considered to be professional.
The "works chcmist" or analyst of this era was concerned almost exclusively with two branches of analytical chemistry, namely, qualitative analysis and quantitative analysis. In qualitative analysis, interest is directed to determine the constituent parts of a given product, without any effort to determine the quantitative relationships of these parts. Quantitative analysis, on the other hand, as a term does very definitely indicate, is directly concerned not only with determining the constituent parts, but how much of cach is present.
It is these two branches of chemistry that are still regarded to be main constituent parts of modern analytical chcmistry, though the methods and apparatus used by the analytical chcmists nowadays have greatly changed.
