Method for determination of microconstituents

Details Method for determination of microconstituents Method for determination of microconstituents

1990-02-14

1991-01-01

Hill, Jr., Robert J.

Chemistry: analytical and immunological testing

Measurement of electrical or magnetic property or thermal...

Of a liquid

73 611C, 210656, 422 70, 436161, 436175, 436178, G01N 2700, G01N 3002

Patent

active

049818040

ABSTRACT:
A method and apparatus for determining, by use of ion chromatography, a microconstituent contained in a major constituent as impurities present in the major constituent. The invention causes only that portion of the effluent from the detector, shown on an ion chromatograph, that corresponds to the neighborhood of the microconstituent to be led again to the collecting valve. Thus, the microconstituent of the solution can be determined quickly and easily, without reference to the kind of microconstituent being tested.

REFERENCES:
patent: 4204952 (1980-05-01), Snyder
patent: 4274967 (1981-06-01), Snyder
patent: 4454043 (1984-06-01), Ting et al.
patent: 4533518 (1985-08-01), Hanaoka et al.
patent: 4536199 (1985-08-01), Toon
Snyder et al., "Introduction to Modern Liquid Chromatography", Second Edition, Published by John Wiley & Sons, Inc., New York, 1979, pp. 519-522.

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