EP 1144986 A2 20011017 - ENERGY DISPERSION X-RAY FLUORESCENCE ANALYSIS OF CHEMICAL SUBSTANCES
Title (en)
ENERGY DISPERSION X-RAY FLUORESCENCE ANALYSIS OF CHEMICAL SUBSTANCES
Title (de)
ENERGIEDISPERSIVE RÖNTGENFLUORESZENZANALYSE VON CHEMISCHEN SUBSTANZEN
Title (fr)
ANALYSE PAR FLUORESCENCE X A DISPERSION D'ENERGIE DE SUBSTANCE CHIMIQUE
Publication
Application
Priority
- DE 19902617 A 19990123
- DE 19921317 A 19990508
- EP 0000070 W 20000107
Abstract (en)
[origin: US6496562B1] The invention relates to a method for classifying and identifying by means of energy dispersion X-ray fluorescence analysis chemical substances whose X-ray fluorescence lines cannot be detected and which therefore cannot be classified by energy dispersion X-ray fluorescence analysis alone. Said method is characterized in that the sample to be analyzed is analyzed in its original packaging or natural state without prior processing in a sample vessel. According to the method the sample is: a) positioned in front of the measuring aperture in a sample chamber of an X-ray fluorescence apparatus; b) measured; and c) classified and identified by application of multivariate, statistical techniques to the measurement signals obtained, i.e., to the Compton and Rayleigh scattering.
IPC 1-7
IPC 8 full level
G01N 23/223 (2006.01)
CPC (source: EP US)
G01N 23/223 (2013.01 - EP US); G01N 2223/076 (2013.01 - EP US)
Citation (search report)
See references of WO 0043761A2
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 6496562 B1 20021217; EP 1144986 A2 20011017; JP 2002535647 A 20021022; WO 0043761 A2 20000727; WO 0043761 A3 20001130
DOCDB simple family (application)
US 88970001 A 20010720; EP 0000070 W 20000107; EP 00901071 A 20000107; JP 2000595133 A 20000107