Measuring and testing – Sampler – sample handling – etc. – With heating or cooling
Patent
1993-03-03
1995-03-28
Noland, Thomas P.
Measuring and testing
Sampler, sample handling, etc.
With heating or cooling
7386481, 7386323, 250288, G01N 128, H01J 4926, B05B 102, B23K 900
Patent
active
054006651
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. The sample introduction system provides improved sample solution nebulization, desolvation and solvent removal, as well as reduced sample loss and carry-over of sample from one analysis procedure to a subsequent analysis procedure, as compared to other systems which perform a similar overall function. The sample introduction system also enhances transport of sample through the sample introduction system to a sample analysis system. The present invention is equally effective with sample solutions in which the sample solvent is either water, or an organic solvent.
REFERENCES:
patent: 4084934 (1978-04-01), Kumazawa
patent: 4206160 (1980-06-01), Suddendorf et al.
patent: 4985529 (1990-09-01), Vestal
patent: 5192865 (1993-03-01), Zhu
patent: 5212365 (1993-05-01), Wiederin
patent: 5259254 (1993-11-01), Zhu et al.
patent: 5272308 (1993-12-01), Wiederin
"Characterization of a Membrane Interface for Sample Introduction into Atom Reservoirs for Analytical Atomic Spectrometry" Spec Acta., vol. 43B, No. 8, pp. 917-922; published 1988 by Anders Gustavsson.
Sutton John E.
Wiederin Daniel R.
Zhu Jianzhong
Cetac Technologies Incorporated
Noland Thomas P.
Welch James D.
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