Abstract: An efficient sample introduction system and method of use, for accepting liquid sample solutions, nebulizing them to form nebulized sample solution droplets, desolvating and removing solvent therefrom, and introducing the resulting desolvated nebulized sample particles to sample analysis systems is disclosed. In the preferred embodiment a flow of heated gas is caused to flow over the outer surface of a coiled essentially tubular shaped enclosed filter to remove solvent vapor which diffuses through the coiled essentially tubular shaped enclosed filter while a mixture of desolvated nebulized sample particles and solvent vapor is caused to flow therethrough. A modified embodiment utilizes a low temperature condenser in place of the heated gas flow. Nebulization of sample solutions is accomplished by use of high efficiency ultrasonic or direct injection micro nebulizer systems. Desolvation is performed in a desolvation chamber in which heating elements provide a temperature sufficient to vaporize solvent present.
Type:
Grant
Filed:
March 3, 1993
Date of Patent:
March 28, 1995
Assignee:
Cetac Technologies Incorporated
Inventors:
Jianzhong Zhu, Daniel R. Wiederin, John E. Sutton
Abstract: An afterglow electric discharge detector system for use in analysis of samples is disclosed. Fabrication is predominately from machined radiation transparent material such as crystalline magnesium or lithium fluoride.