Method for preparing analytical standard, and analytical...

Details Method for preparing analytical standard, and analytical... Method for preparing analytical standard, and analytical...

2007-10-02

2010-06-08

Wallenhorst, Maureen M (Department: 1797)

Chemistry: analytical and immunological testing

Including sample preparation

C436S008000, C436S077000, C436S164000, C436S166000, C436S181000, C436S183000, C252S408100

Reexamination Certificate

active

07732218

ABSTRACT:
There is provided a method for preparing an analytical standard used for microbeam X-ray fluorescence analysis which includes: a mixing step in which an element is added to a base material, and the base material and the element are mixed by stirring to obtain a mixed solution; a deaeration step in which the mixed solution is deaerated; a freeze step in which the mixed solution is slowly frozen; and a cutting step in which a thin section is cut out from the frozen mixed solution. In order to surely remove bubbles from the mixed solution, the deaeration step may contain a stationary step in which the mixed solution is allowed to stand still at room temperature; or the stationary step includes a removal step in which gas contained in the mixed solution which is allowed to stand still is removed with a suction apparatus.

REFERENCES:
patent: 5981292 (1999-11-01), Obenauf, Jr.
patent: 6221987 (2001-04-01), Sugiyama
patent: 2008/0310588 (2008-12-01), Cooper et al.
Cholewa et al. Fresenius Zeitschrift Analytical Chemistry, vol. 326(7), pp. 742-743, 1987.
Watanabe et al., “New method for quantitative mapping of metallic elements in tissue sections by electron probe microanalyser with wavelength dispersive spectrometers”, Japanese Society of Electron Microscopy, Journal of Electron Microscopy, vol. 50, No. 1, 2001, pp. 77-82.
Watanabe et al., “Atomic-level detection by X-ray microanalysis in the analytical electron microscope”, Ultramicroscopy 78, 1999, pp. 89-101.

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