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- W2149678855 abstract "A new instrument was conceived and designed for quantitative measurement of chromophoric areas or colored spots such as are produced in (e.g.) thin-layer chromatography. The areas to be measured are subdivided grid-like into small subunits, and the absorbance of each of these is measured. The sum of absorbances for all subunits is directly proportional to the total amount of light-absorbing substances in a spot. The absorbances of the subunits are measured with a photodetector that contains hundreds of microscopically small photodiodes, arranged in a precise geometric array. The photodiode array is interfaced with a computer via an analog-to-digital converter for numerically integrating the individual signals from each photodiode. With this analytical system, quantitation of light-absorbing substance is accurate and precise for areas of different sizes, shapes, and internal irregularity." @default.
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- W2149678855 date "1981-10-01" @default.
- W2149678855 modified "2023-10-10" @default.
- W2149678855 title "An instrument for digital matrix photometry." @default.
- W2149678855 doi "https://doi.org/10.1093/clinchem/27.10.1665" @default.
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