USH901H - Method of identifying the composition of a material sample - Google Patents

Method of identifying the composition of a material sample Download PDF

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Publication number
USH901H
USH901H US07/406,930 US40693089A USH901H US H901 H USH901 H US H901H US 40693089 A US40693089 A US 40693089A US H901 H USH901 H US H901H
Authority
US
United States
Prior art keywords
abrasive
sample
material sample
identifying
composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US07/406,930
Inventor
Donald W. Eckart
Joel R. Shappirio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Department of Army
Original Assignee
US Department of Army
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by US Department of Army filed Critical US Department of Army
Priority to US07/406,930 priority Critical patent/USH901H/en
Application granted granted Critical
Publication of USH901H publication Critical patent/USH901H/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/2813—Producing thin layers of samples on a substrate, e.g. smearing, spinning-on
    • G01N2001/2833—Collecting samples on a sticky, tacky, adhesive surface
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G01N2001/2866—Grinding or homogeneising

Definitions

  • This invention relates in general to a method of identifying the composition of a material sample, and in particular, to such a method when the material sample is in a remote location.
  • the general object of this invention is to provide a method of identifying a material sample, particularly when the material sample is in a remote location.
  • a more particular object of the invention is to provide such a method that permits safe shipment of the material sample, without contamination, for identification.
  • the sample material is rubbed with an abrasive coated paper or cloth such as emery paper until streaking appears on the emery paper.
  • the emery paper is then analyzed in the laboratory for the composition of the material sample embedded within it by a method such as energy dispersive x-ray spectroscopy (EDS).
  • EDS energy dispersive x-ray spectroscopy
  • the emery paper may be glued to the standard sample holder used in the EDS system for ease of handling.
  • sample materials that can be analyzed include plating on metals, metals, corrosion products, coatings, residues, glasses, ceramics, minerals, and ores.
  • the method of the invention allows the identification of a sample material in a remote location without having to ship the sample material to a laboratory or to take the sample material apart.
  • Metal shelter bolts are being used as electrical grounds in the field at a remote location.
  • the specification calls for the bolts to be plated with nickel.
  • the bolts are becoming corroded, it is felt that they might not be plated with nickel. It is further felt unsafe to send chemical kits for chemical analysis into the field. Therefore, the plated bolts are rubbed with emery paper until streaking occurs in the emery paper indicating that the sample of plated bolt is imbedded in the emery paper.
  • the emery paper is sent to the laboratory and found by EDS to contain cadmium and no nickel.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

A material sample is rubbed with an abrasive material until streaking appears in the abrasive indicating that the material sample has become embedded in the abrasive and the abrasive material then analyzed using qualitative and quantitative chemical analysis.

Description

The invention described herein may be manufactured, used, and licensed by or for the Government for governmental purposes without the payment to us of any royalty thereon.
This invention relates in general to a method of identifying the composition of a material sample, and in particular, to such a method when the material sample is in a remote location.
BACKGROUND OF THE INVENTION
Certain material samples useful in microelectronics and other disciplines can be exceedingly sensitive to the rigors of transportation including damage and contamination. Modern assay methods require sophisticated analysis tools, often at a remote location. A method is therefore needed for identification of a material sample that permits safe shipment, without contamination, for analysis
SUMMARY OF THE INVENTION
The general object of this invention is to provide a method of identifying a material sample, particularly when the material sample is in a remote location. A more particular object of the invention is to provide such a method that permits safe shipment of the material sample, without contamination, for identification.
It has now been found that the aforementioned objectives can be attained by rubbing the material sample with an abrasive material until streaking appears in the abrasive indicating that the material sample has become embedded in the abrasive material and then analyzing the abrasive material using qualitative and quantitative chemical analysis.
More particularly, according to the invention the sample material is rubbed with an abrasive coated paper or cloth such as emery paper until streaking appears on the emery paper. The emery paper is then analyzed in the laboratory for the composition of the material sample embedded within it by a method such as energy dispersive x-ray spectroscopy (EDS). Because analytical techniques such as EDS can perform qualitative and quantitative chemical analysis on very small quantities of sample down to micron or submicron dimensions, it is necessary to have only a representative sampling of the material sample in question. The emery paper accomplishes this sampling by containing the sample material because it is embedded in the abrasive material even during transportation.
The emery paper may be glued to the standard sample holder used in the EDS system for ease of handling.
The types of sample materials that can be analyzed include plating on metals, metals, corrosion products, coatings, residues, glasses, ceramics, minerals, and ores.
It is also noted that the method of the invention allows the identification of a sample material in a remote location without having to ship the sample material to a laboratory or to take the sample material apart.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Metal shelter bolts are being used as electrical grounds in the field at a remote location. The specification calls for the bolts to be plated with nickel. As the bolts are becoming corroded, it is felt that they might not be plated with nickel. It is further felt unsafe to send chemical kits for chemical analysis into the field. Therefore, the plated bolts are rubbed with emery paper until streaking occurs in the emery paper indicating that the sample of plated bolt is imbedded in the emery paper. The emery paper is sent to the laboratory and found by EDS to contain cadmium and no nickel.
We wish it to be understood that we do not desire to be limited to the exact details of construction shown and described for obvious modifications will occur to a person skilled in the art.

Claims (5)

What is claimed is:
1. Method of identifying the composition of a material sample comprising rubbing the material sample with an abrasive material until streaking appears in the abrasive material indicating that the material sample has become embedded in the abrasive material, and then analyzing the abrasive material using qualitative and quantitative chemical analysis.
2. Method according to claim 1 wherein the abrasive material is an abrasive coated paper.
3. Method according to claim 2 wherein the abrasive coated paper is emery paper.
4. Method according to claim 1 wherein the abrasive material is an abrasive coated cloth.
5. Method according to claim 3 wherein the analysis is made by x-ray spectroscopy (EDS).
US07/406,930 1989-09-13 1989-09-13 Method of identifying the composition of a material sample Abandoned USH901H (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US07/406,930 USH901H (en) 1989-09-13 1989-09-13 Method of identifying the composition of a material sample

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/406,930 USH901H (en) 1989-09-13 1989-09-13 Method of identifying the composition of a material sample

Publications (1)

Publication Number Publication Date
USH901H true USH901H (en) 1991-03-05

Family

ID=23609941

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/406,930 Abandoned USH901H (en) 1989-09-13 1989-09-13 Method of identifying the composition of a material sample

Country Status (1)

Country Link
US (1) USH901H (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2280133A (en) * 1993-07-15 1995-01-25 Ford Motor Co Abrasive instrument for sample collection.
EP0774654A1 (en) * 1995-11-20 1997-05-21 Perkin-Elmer Limited Carrier and its use in the preparation of samples for spectroscopy
EP0819929A2 (en) * 1996-07-16 1998-01-21 Perkin-Elmer Limited Carrier and its use in the preparation of samples for spectroscopy
CN102095599A (en) * 2010-10-12 2011-06-15 上海宏力半导体制造有限公司 Manipulator surface metal contamination detection method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Introduction to X-Ray Spectrometric Analysis", Eugene Bertin, Plenum Pre 1978, 405, 6, 419-423.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2280133A (en) * 1993-07-15 1995-01-25 Ford Motor Co Abrasive instrument for sample collection.
EP0774654A1 (en) * 1995-11-20 1997-05-21 Perkin-Elmer Limited Carrier and its use in the preparation of samples for spectroscopy
US5703681A (en) * 1995-11-20 1997-12-30 Perkin-Elmer Ltd Carrier and its use in the preparation of samples for spectroscopy
EP0819929A2 (en) * 1996-07-16 1998-01-21 Perkin-Elmer Limited Carrier and its use in the preparation of samples for spectroscopy
EP0819929A3 (en) * 1996-07-16 1998-08-26 Perkin-Elmer Limited Carrier and its use in the preparation of samples for spectroscopy
US5877435A (en) * 1996-07-16 1999-03-02 Perkin-Elmer Ltd. Carrier and its use in the preparation of samples for spectroscopy
CN102095599A (en) * 2010-10-12 2011-06-15 上海宏力半导体制造有限公司 Manipulator surface metal contamination detection method

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