LASER-LUMINESCENT ANALYZER Russian patent published in 1996 - IPC

FIELD: analytical chemistry. SUBSTANCE: invention can find use in determination of polyaromatic hydrocarbons in natural, drinking water and sewage and makes it possible to determine quickly trace quantities of polyaromatic hydrocarbons at room temperature with high sensitivity and minimal time of preparation of samples under dynamic conditions. Laser-luminescent analyzer has laser with pulse generator, quartz plate placed along laser axis, primary light filter, working dish positioned uniaxially to it, secondary light filter and photomultiplier mounted in sequence by its side surface. The latter is connected to power supply source and signal registration unit. Analyzer is provided with second quartz plate put uniaxially to first quartz plate, primary light filter, cylindrical comparison dish placed uniaxially to it, secondary light filter and photomultiplier positioned in sequences by its side surface, pump connected with pipe-line to lower part of working dish, pipe-line connecting upper part of working dish to lower part of comparison dish and unit for analog processing of signals. Input of unit is connected to outputs of photomultipliers and its output is linked to input of signal registration unit. Output of power supply source is connected to input of second photomultiplier and output of pulse generator is connected to input of unit for analog processing of signals. Lengths l₀,l₁ of pipe-line connecting correspondingly pump with working dish and dishes are determined by formulas. EFFECT: reduced time of analysis, enhanced authenticity of it. 1 dwg, 1 tbl