| 摘要 |
<p>An inductively coupled plasma spectroscopy apparatus (40) in which an inductively coupled plasma torch (42) and an analyte sample atomizer (44) are integrally formed as a single unit. The atomizer portion of the apparatus includes two electrodes (46, 48) and a plasma nozzle (49) through which a heating element (54) is placed. Test samples may be placed into a sample vessel (55) which is positioned within the heating element. The torch portion includes a glass containment wall (70) surrounding at least a portion of the plasma nozzle to define a plasma chamber (64) located immediately adjacent to the sample vessel. The glass containment wall contains a radio frequency (RF) coil (71) wrapped about its periphery which is inductively coupled to a supply of gas. A variable rate cooling manifold (74, 76) is also provided about the periphery of the containment wall. The integral design effectively reduces the buildup of memory condensate within the apparatus, thereby decreasing contamination and improving the sensitivity of the results obtained.</p> |
