Measuring the content of oxygen dissolved in a freshwater reservoir

For the life of fish and other aquatic animals, oxygen dissolved in water is particularly important. Oxygen partially penetrates into from atmosphere, released reservoir itself as a result livelihoods plant organisms. By means chlorophyll, green plants extracted carbon dioxide needed to construct living matter carbon, allocating surrounding space. This process photosynthesis proceeds due energy sunlight only light time day. The penetration atmosphere contributes wind, flow, precipitation, sharp changes temperature reasons that increase mixing layers. In reservoirs, strongly contaminated organic substances, addition rich salts sulfuric acid (sulfates) may appear poisonous for aqueous animals gaz – hydrogen sulfide. It occurs absence with participation special bacteria. Carbon accumulated breathing organisms, most importantly - oxidation matter. Therefore, excess indicates significant contamination reservoirs by substances. itself, safe fish, even useful known limits, since it usually increases productivity reservoirs. Organic substances are formed or industries fields fields, farmsteads, stand out birds, human, contain some elements compounds necessary development all creatures. Among such primarily nitrogen phosphorus. abundance containing these provides plants. But when accumulate too much, then regime deteriorates sharply until conditions order. Classic methods controls biota parameters fresh have row substantial defects belong: systematic uncharacter control informatively important parameters; subzero exactness control; large volume hand operations; necessity knowledge mathematical bases method; bad interpretation results; need use support staff. shortcomings can be corrected an automated way obtaining processing informative biota. A structural scheme selected preferential algorithm their been developed. shown convenient collecting mass material about content optical method. Comparison synchronous measurements electrochemical sensors showed underestimation sensor compared one. method measuring based on finding intensity fluorescence sensitive membrane empirical ratio. Molecules reduce fluorescence, created carefully chemical elements. An absolute concentration determined after linearization thermocompensation, which performed help built-in sensor.