| 摘要 |
PROBLEM TO BE SOLVED: To quicken a measurement b preventing occurrence of peeling phenomenon using glassy carbon as a compositional material thereby prolonging the lifetime of a cuvette and quickening the atomization rate of a sample through low wettability effect, or the like. SOLUTION: The cuvette for electric heating type atomic absorption spectrochemical analysis is composed of a glassy carbon material produced by molding, curing and carbonizing thermosetting powder phenol resin or a mixture thereof with fine graphite powder. Carbonization is performed by heating up to 3000 deg.C, for example, at a specified temperature rising rate and a glassy carbon material thus produced is machined to specified dimensions using a diamond tool, or the like. treferably, the glassy carbonic cuvette has bulk density of 1.4 Mg/m<3> or above, porosity of 1.5 vol.% or below and resistivity of 25μωm or above. When such characteristics, variation of shape, e.g. coarsening of surface does not take place when a cuvette is immersed into a mixture of sulfuric acid and nitric acid for 100 hours, for example.
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