Ernest C Williams

US Patent:

48333220, May 23, 1989

Filed:

May 2, 1986

Appl. No.:

6/859094

Inventors:

Alan R. Forster - Houston TX
Robert A. Howard - Missouri City TX
Ernest P. Williams - Houston TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

G01N 2173

US Classification:

250288

Abstract:

Methods and apparatus are provided for qualitative and quantitative determination of constituents of a sample of material. The method prepares the sample for analysis by mixing the sample with a preselected quantity of a preselected material that serves to transport and project the sample. The mixture may be pyrolyzed and/or injected into a plasma. A spectrometric detection is made of the sample in the plasma. The apparatus is a modified electrothermal vaporization furnace whose sample outlet is connected to the sample inlet of an inductively-coupled plasma-mass spectrometer (ICP-MS). An additional gas (oxygen) injection line is provided between the sample outlet of the furnace and the sample inlet of the ICP-MS.

Address:

2414 N Rim Dr, Houston, TX 77067

VIN:

1GNFC13017R187071

Make:

CHEVROLET

Model:

TAHOE

Year:

2007