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Title: Concentric micro-nebulizer for direct sample insertion

Abstract

A concentric micro-nebulizer and method for introducing liquid samples into a plasma established in a plasma torch including a first tube connected to a source of plasma gas. The concentric micro-nebulizer has inner and outer concentric tubes extending upwardly within the torch for connection to a source of nebulizer gas and to a source of liquid solvent and to a source of sample liquid. The inner tube is connected to the source of liquid solvent and to the source of sample liquid and the outer tube is connected to the source of nebulizer gas. The outer tube has an orifice positioned slightly below the plasma when it is established, with the inner and outer tubes forming an annulus therebetween with the annular spacing between the tubes at said orifice being less than about 0.05 mm. The dead volume of the inner tube is less than about 5 microliters.

Inventors:
 [1];  [2];  [1]
  1. Ames, IA
  2. Nevada, IA
Issue Date:
Research Org.:
Ames Lab., Ames, IA (United States); Iowa State University, Ames, IA (US)
OSTI Identifier:
865786
Patent Number(s):
4575609
Application Number:
06/586,611
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
concentric; micro-nebulizer; direct; sample; insertion; method; introducing; liquid; samples; plasma; established; torch; including; tube; connected; source; gas; inner; outer; tubes; extending; upwardly; connection; nebulizer; solvent; orifice; positioned; slightly; below; forming; annulus; therebetween; annular; spacing; 05; dead; volume; microliters; liquid sample; tube connected; liquid samples; tubes extend; tubes extending; dead volume; inner tube; plasma torch; liquid solvent; outer tube; plasma gas; concentric tubes; outer tubes; outer concentric; extending upwardly; concentric micro-nebulizer; torch including; /219/239/315/356/

Citation Formats

Fassel, Velmer A, Rice, Gary W, and Lawrence, Kimberly E. Concentric micro-nebulizer for direct sample insertion. United States: N. p., 1986. Web.
Fassel, Velmer A, Rice, Gary W, & Lawrence, Kimberly E. Concentric micro-nebulizer for direct sample insertion. United States.
Fassel, Velmer A, Rice, Gary W, and Lawrence, Kimberly E. Tue . "Concentric micro-nebulizer for direct sample insertion". United States. https://www.osti.gov/servlets/purl/865786.
@article{osti_865786,
title = {Concentric micro-nebulizer for direct sample insertion},
author = {Fassel, Velmer A and Rice, Gary W and Lawrence, Kimberly E},
abstractNote = {A concentric micro-nebulizer and method for introducing liquid samples into a plasma established in a plasma torch including a first tube connected to a source of plasma gas. The concentric micro-nebulizer has inner and outer concentric tubes extending upwardly within the torch for connection to a source of nebulizer gas and to a source of liquid solvent and to a source of sample liquid. The inner tube is connected to the source of liquid solvent and to the source of sample liquid and the outer tube is connected to the source of nebulizer gas. The outer tube has an orifice positioned slightly below the plasma when it is established, with the inner and outer tubes forming an annulus therebetween with the annular spacing between the tubes at said orifice being less than about 0.05 mm. The dead volume of the inner tube is less than about 5 microliters.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {3}
}

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