Potrebujeme váš súhlas na využitie jednotlivých dát, aby sa vám okrem iného mohli ukazovať informácie týkajúce sa vašich záujmov. Súhlas udelíte kliknutím na tlačidlo „OK“.
Standard Test Methods for Chemical Analysis of Ceramic Whiteware Materials Using Wavelength Dispersive X-Ray Fluorescence Spectrometry (Withdrawn 2023)
Automaticky preložený názov:
Štandardné skúšobné metódy pre chemickú analýzu keramické kameniny materiálov pomocou Vlnová dĺžka disperzné röntgenová fluorescencie spektrometria
NORMA vydaná dňa 1.12.2014
Označenie normy: ASTM C1605-04(2014)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.12.2014
Kód tovaru: NS-11992
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
ICS Number Code 71.040.50 (Physicochemical methods of analysis)
1. Scope | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1.1 These test methods cover the determination of ten major elements (SiO2, Al2O3, Fe2O3, MgO, CaO, Na2O, K2O, TiO2, P2O5, MnO, and LOI in ceramic whitewares clays and minerals using wavelength dispersive X-ray fluorescence spectrometry (WDXRF). The sample is first ignited, then fused with lithium tetraborate and the resultant glass disc is introduced into a wavelength dispersive X-ray spectrometer. The disc is irradiated with X-rays from an X-ray tube. X-ray photons emitted by the elements in the samples are counted and concentrations determined using previously prepared calibration standards. Note 1: Much of the text of this test method is derived directly from 1.2 Interferences, with analysis by WDXRF, may result from mineralogical or other structural effects, line overlaps, and matrix effects. The structure of the sample, mineralogical or otherwise, is eliminated through fusion with a suitable flux. Fusion of the sample diminishes matrix effects and produces a stable, flat, homogeneous sample for presentation to the spectrometer. Selecting certain types of crystal monochromators eliminates many of the line overlaps and multiorder line interferences. A mathematical correction procedure (2) is used to correct for the absorption and enhancement matrix effects. 1.3 Concentrations of the elements in clays and minerals are determined independent of the oxidation state and are reported in the oxidation state in which they most commonly occur in the earth’s crust. 1.4 Concentration ranges:
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2. Referenced Documents | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Poskytovanie aktuálnych informácií o legislatívnych predpisoch vyhlásených v Zbierke zákonov od roku 1945.
Aktualizácia 2x v mesiaci !
Chcete vedieť viac informácii ? Pozrite sa na túto stránku.
Posledná aktualizácia: 2024-09-25 (Počet položiek: 2 350 354)
© Copyright 2024 NORMSERVIS s.r.o.