Pre-filmed precision sample cell for x-ray analyzer
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01N-023/223
B01L-003/00
출원번호
UP-0323590
(2008-11-26)
등록번호
US-7729471
(2010-06-22)
발명자
/ 주소
Burdett, Jr., John H.
Dunham, Daniel L.
Quinn, James B.
출원인 / 주소
X-Ray Optical Systems, Inc.
대리인 / 주소
Klembczyk, Esq., Jeffrey R.
인용정보
피인용 횟수 :
7인용 특허 :
37
초록▼
A sample cell for an analysis instrument, having an outer body forming a sample reservoir therein; a directional fill valve disposed in an upper end of the outer body and forming an upper end of the sample reservoir, the fill valve for accepting a sample during filling, and preventing sample leakage
A sample cell for an analysis instrument, having an outer body forming a sample reservoir therein; a directional fill valve disposed in an upper end of the outer body and forming an upper end of the sample reservoir, the fill valve for accepting a sample during filling, and preventing sample leakage while providing venting after filling; and a film covering a lower end of the outer body, and forming a bottom end of the sample reservoir, the film for presenting the sample to an analysis focal spot of the analysis instrument. The disclosed sample cell is especially suited for an x-ray analysis engine having a focal spot requiring alignment with the sample in the sample cell. At least one x-ray optic may be disposed in an excitation and/or detection path, requiring alignment to the focal spot, in e.g., a WDXRF or EDXRF system.
대표청구항▼
What is claimed is: 1. A sample cell for an analysis instrument, comprising: an outer body forming a sample reservoir therein; a directional fill valve disposed in an upper end of the outer body and forming an upper end of the sample reservoir, the fill valve for accepting a sample during filling,
What is claimed is: 1. A sample cell for an analysis instrument, comprising: an outer body forming a sample reservoir therein; a directional fill valve disposed in an upper end of the outer body and forming an upper end of the sample reservoir, the fill valve for accepting a sample during filling, and preventing sample leakage while providing venting after filling; and a film covering a lower edge of the outer body, and forming a bottom end of the sample reservoir, the film for presenting the sample to an analysis focal spot of the analysis instrument. 2. The sample cell of claim 1, further comprising a ring for fixedly fastening the film around the lower edge of the body, which upon fastening remains around the lower edge of the body over the film. 3. The sample cell of claim 2, wherein an edge of the ring extends beyond the lower end of the body over which the film is fastened, upon which the sample cell can rest when placed on a surface, the film being thereby separated from the surface by a distance corresponding to the size of the extension. 4. The sample cell of claim 2, wherein the outer body includes an inner wall and an outer wall between which the ring is frictionally held, and a lower edge of the inner wall comprises the edge around which the film is fastened. 5. The sample cell of claim 4, wherein the outer wall extends beyond the lower edge of the inner wall over which the film is fastened, upon which the sample cell can rest when placed on a surface, the film being thereby separated from the surface by a distance corresponding to the size of the extension. 6. The sample cell of claim 1, wherein the fill valve is a one-way, elastomeric fill valve to accommodate a pipette during sample filling, preventing leakage of said sample upon removal of the pipette, while providing venting of the reservoir upon filling. 7. The sample cell of claim 6, further comprising a blocking structure formed within the sample reservoir and aligned to the fill valve, to prevent the pipette from reaching the film through the sample reservoir upon insertion into the fill valve. 8. The sample cell of claim 7, where the blocking structure allows at least some of the sample to circulate beyond the blocking structure. 9. The sample cell of claim 8, wherein the blocking structure includes apertures to allow particulate matter of the sample of a predetermined size to circulate beyond the blocking structure, while preventing particulate matter exceeding said size from circulating beyond the blocking structure. 10. The sample cell of claim 9, wherein one of the apertures of the blocking structure comprises a hole in the bottom of the blocking structure large enough to promote a downward flow of the sample without splatter, but small enough prevent the pipette from reaching the film through the blocking structure upon insertion into the fill valve. 11. The sample cell of claim 1, wherein the film is essentially permanently attached around the body using an essentially permanently mounted ring. 12. The sample cell of claim 11, further comprising a cap, essentially permanently fitted into an upper portion of the body, to hold the fill valve in place. 13. The sample cell of claim 1, further comprising a cap, essentially permanently fitted into an upper portion of the body, to hold the fill valve in place. 14. A combination comprising: an x-ray analysis engine; and the sample cell of claim 1, wherein the x-ray analysis engine having a focal spot requiring alignment with the sample in the sample cell. 15. The combination of claim 14, further comprising at least one x-ray optic disposed in an excitation and/or detection path, requiring alignment to the focal spot. 16. The combination of claim 15, wherein the at least one x-ray optic comprises a curved monochromating optic or a polycapillary optic. 17. The combination of claim 15, wherein the x-ray analysis engine comprises a WDXRF analysis engine having a monochromating optic in the detection path. 18. The combination of claim 17, wherein the analysis instrument is a sulfur analysis instrument. 19. The combination of claim 15, wherein the x-ray analysis engine comprises an EDXRF analysis engine having the at least one optic in the excitation path and an energy dispersive detector in the detection path. 20. The combination of claim 15, wherein the sample cell is supported by the film in said combination using supports contacting the film of the sample cell, thereby ensuring alignment of the sample to the focal spot.
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이 특허에 인용된 특허 (37)
Solazzi Monte J., Apparatus and method for affixing thin film material to sample cup used in X-ray spectroscopy.
Mitteldorf Arthur J. (Scotch Plains NJ) Marcovecchio Joseph (Berkeley Heights NJ) Boquiron Rodolfo A. (New Monmouth NJ), Cell for containing fluid to be analyzed by x-ray spectroscopy.
Drobish James L. (Cincinnati OH) Taske Leo E. (Cincinnati OH), Flexible container including self-sealing dispensing valve to provide automatic shut-off and leak resistant inverted sto.
Torrisi Angelo M. (10 Anpell Dr. Scarsdale NY 10583) Urbano Roland (Tuckahoe NY), Safety ring for double open-ended sample holder cell for spectroscopic analysis.
Torrisi Angelo M. (10 Anpell Dr. Scarsdale NY 10583) Urbano Roland (Tuckahoe NY), Sample holder for spectroscopic analysis and method for mounting film to sample holder.
Torrisi Angelo M. (10 Anpell Dr. Scarsdale NY 10583) Urbano Roland (Tuckahoe NY), Sample holder with handling support for X-ray spectroscopic analysis.
Torrisi Angelo M. (10 Anpell Dr. Scarsdale NY 10583) Urbano Roland (Tuckahoe NY), System and a method for mounting film to a sample holder for X-ray spectroscopic fluorescence analysis.
Chupas, Peter J.; Chapman, Karena W.; Kurtz, Charles A.; Borkiewicz, Olaf J.; Wiaderek, Kamila Magdelena; Shyam, Badri, Transmission-geometry electrochemical cell for in-situ scattering and spectroscopy investigations.
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