| The speetrogyaphie methods have been recognized m
many cases as superi0r to chemical analysis in (1) speed aad
cost of analy.:~is, (2) sensitivity in the deteeti0n and estimation
of the minute quantities of elements, (3) the ability to
analyse very small samples, and (4) the detection of th•
totally unsuspected traces of the elements present. But the
main benefit is in the case by which refractories, enamels,
glabses, glazes, slags, cements, ores, rocks, and mineral
products can be analyzed. However, there are drawbacks
too. The majority of the nonmetallic elements cannot be
very satisfactorily analyzed by these methods, and also in
the case of certain analysis, chemical methods excell the
spectroscopic analysis. It should also be borne in mind that
quantitative determination of the elements which occur in
concentrations greater than 10% are not possible. |
