Abstract
A photocolorimeter was developed; this instrument made it possible to perform sample preparation, to preconcentrate test water components on indicator cellulose matrices, and to simultaneously measure their light absorption. A white light-emitting diode and a Digital color sensor S9706 photodiode, which simultaneously detected red (615 nm), green (540 nm), and blue (465 nm) regions of the spectrum, were used in the instrument. The applicability of the photocolorimeter to the determination of 36 components and characteristics of water was demonstrated. The photocolorimeter was proposed for the simultaneous determination of 20 components at a level of their maximum permissible concentrations for fishery water (RSD < 10%) for 10–15 min.
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