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“.
Elemental Composition of Zeolites by ICP-AES
Automaticky preložený názov:
Elementárneho zloženia Zeolity ICP - AES
NORMA vydaná dňa 29.7.2002
Označenie normy: UOP 961-98
Poznámka: NEPLATNÁ
Dátum vydania normy: 29.7.2002
Kód tovaru: NS-575021
Počet strán: 11
Približná hmotnosť: 33 g (0.07 libier)
Krajina: Americká technická norma
Kategória: Technické normy UOP
1. Scope |
This method is for the determination of components in zeolites by Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES). Although the determination of silicon (Si), aluminum (Al), sodium (Na), potassium (K), calcium (Ca), iron (Fe), titanium (Ti), magnesium (Mg), phosphorus (P) and lithium (Li) is specifically addressed, many other elements, including trace contaminants, can also be determined. However, barium (Ba) and lead (Pb) cannot be determined in the digest due to the formation of insoluble sulfates. Barium can be determined from the fusion solution with a quantitation limit of approximately 0.01 mass-%. This method is suitable for samples containing less than 40 mass-% alumina (Al2O3) and less than 65 mass-% silica (SiO2); however, it can be readily expanded to samples with other silica/alumina ratios utilizing the same approach as described herein. Zirconium (Zr) at levels above about one mass-% can interfere with the analysis for aluminum when using some instruments, unless an alternative wavelength is used. Precision is about 1 to 2% relative standard deviation for elements present at concentrations greater than 0.1 mass-%, and mass balances between 98.5 and 101.5 mass-% are reported on a volatile-free basis. Precision below 0.1 mass-% does not exceed 10% relative down to the quantitation limits listed in Table 2. |
Posledná aktualizácia: 2024-08-30 (Počet položiek: 2 345 304)
© Copyright 2024 NORMSERVIS s.r.o.