Patent ID: 6485689
Filing Date: 2002-11-26
Classification: B05B,G01N,Y10T

Abstract:
An analytical apparatus using a nebulizer, comprising:a container for storing a sample solution therein; a pump for feeding the sample solution from said container to said nebulizer; a gas supply means, including a pressure regulating valve, for supplying a gas under pressure to said nebulizer; said nebulizer comprising: a first member and a second member which form a chamber; a plate having a plurality of orifices; a first aperture in said first member for gas inlet into which the gas under pressure is supplied; a second aperture in said second member for fixing said place; a plurality of tubes for respectively delivering said sample solution; and a fixing tube for fixing said tubes, wherein one end of each of said tubes is respectively placed in one of said orifices, a diameter of said second aperture is smaller than that of said chamber, and a compressed gas and said sample solution flow together through said orifices at a supersonic speed to form spray gas containing the sample solution; and wherein said analytical apparatus further comprises: a liquid delivery unit for delivering the sample solution from said pump to said nebulizer; a spray chamber for receiving the spray gas from said orifices, said spray chamber being cooled or heated; and a plasma analyzer and a tube connecting a gas introduction unit of said plasma analyzer and said spray chamber.