| 摘要 |
The invention relates to a miniaturized analyser with rhodium-filament evaporator for simultaneous determination of elements from liquid micro samples, by optical emission spectrometry, employed as analytical instrument. According to the invention, the analyser comprises: a plasma micro torch (1) which is capacitively coupled, with excitation-source function, an electro-thermal evaporator (2) with rhodium filament for the evaporation of the liquid micro sample, provided with a teflon support (3), having a piston (4) for extracting the liquid sample from its chamber, and a filament supply source (5), a radio-frequency generator (6), a micro spectrometer (7) with a detector, with coupled charge, for measuring the element emission signal, a computer unit (8) and an electronic flow-meter (9) meant to adjust the argon flow-rate coming from a gaseous-argon cylinder (10), as a plasma support. |
