Abstract: A sample retreatment apparatus is disclosed, the apparatus including: a sample inlet unit configured to inject a sample including an analysis subject substance; a gas supply unit configured to supply a gas to the sample inlet unit, a sample purge unit, and a sample injection unit; a sample purge unit configured to vaporize the analysis subject substance in the sample by agitating the injected sample in a decompression state; a sample collection unit configured to reduce a press of the sample purge unit and to collect the analysis subject substance; and a sample injection unit configured to outlet the analysis subject substance to an analysis device.

Abstract: An automatic chlorophyll analyzer and an analytical method for measuring fluorescence of chlorophyll after automatic processes of sample filtration and pigment extraction is disclosed, wherein the analyzer comprises: a flow path for fluid transfer; a multi-port valve for selectively connecting one of its ports with the said flow path; a filter for separating particulate materials from water sample and chlorophyll extract; a detector for measuring the fluorescence of chlorophyll extract; a syringe pump for picking up or dispensing the water sample; and a 4-port valve connected to the said syringe for selecting and switching flow paths.