Abstract
The possibility of using photosynthetic organisms as a fluorescent sensor of the presence of toxicants in natural waters is presented. It is based on high sensitivity of molecular photophysical parameters of chlorophyll a obtained by the method of nonlinear laser fluorimetry to the physiological state of photosynthetic apparatus. Laboratory study of the dependence of photophysical parameters of microalgae Chlorella pyrenoidosa on the presence of herbicides and heavy metal ions was performed for experimental validation of the proposed approach.
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