Possibility of remote laser probing of some nonluminescent compounds in natural water reservoirs

A study was made of the influence of some chemical compounds on the luminescence spectrum of phytoplankton. It was found that the intensity of the pigment luminescence decreased strongly in the region of 650 nm and that the integrated intensity of the signal decreased threefold on introduction of 0.01% HgCl₂ into an aqueous medium containing phytoplankton.