BS 6870-3:1989
Current
The latest, up-to-date edition.
Hardcopy , PDF
English
29-09-1989
Foreword
Committees responsible
Method
1 Scope
2 Principle
3 Preparation of the analysis sample
4 Reagents
5 Apparatus
6 Preparation of beads
7 Presentation of beads
8 XRF spectrometer
9 Ratio standard beads
10 Calibration standard beads
11 Alpha correction standard beads
12 Calibration
13 Line interference and background effects
14 Alpha corrections
15 Analysis
16 Correction for tungsten carbide contamination and
loss on ignition
17 Reporting of results
18 Test report
Appendices
A Tungsten carbide corrections with cobalt or nickel
binder
B Monitoring of background and sensitivity
C Typical alpha corrections for rhodium and window
X-ray tubes
D Computation of third order equations
Tables
1 Ranges of content on the ignited basis
2 Maximum allowable detection limits
3 Composition of ratio standard beads
4 Silicon dioxide/aluminium oxide binaries
5 Minor constituents and silicon dioxide
6 Iron (III) oxide and minor constituents
7 Rhodium end window tube empirical alpha corrections
(x 10 to the power 5)
Figure
1 Example of a fusion mould
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