Potřebujeme váš souhlas k využití jednotlivých dat, aby se vám mimo jiné mohly ukazovat informace týkající se vašich zájmů. Souhlas udělíte kliknutím na tlačítko „OK“.
Standard Test Methods for Determination of Nickel, Vanadium, and Iron in Crude Oils and Residual Fuels by Inductively Coupled Plasma (ICP) Atomic Emission Spectrometry
Automaticky přeložený název:
Standardní zkušební metody pro stanovení niklu, vanadu a železa v surové oleje a zbytkových paliv s indukčně vázanou plazmou (ICP), atomová emisní spektrometrie
NORMA vydána dne 1.12.2012
Označení normy: ASTM D5708-12
Poznámka: NEPLATNÁ
Datum vydání normy: 1.12.2012
Kód zboží: NS-32237
Počet stran: 9
Přibližná hmotnost: 27 g (0.06 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
emission spectrometry, ICP, inductively coupled plasma atomic emission spectrometry, iron, nickel, vanadium, ICS Number Code 75.040 (Crude petroleum), 75.160.20 (Liquid fuels)
Significance and Use | ||||||||||||||
4.1 These test methods cover, in single procedures, the determination of Ni, V, and Fe in crude oils and residual oils. These test methods complement Test Method D1548, which covers only the determination of vanadium. 4.2 When fuels are combusted, vanadium present in the fuel can form corrosive compounds. The value of crude oils can be determined, in part, by the concentrations of nickel, vanadium, and iron. Nickel and vanadium, present at trace levels in petroleum fractions, can deactivate catalysts during processing. These test methods provide a means of determining the concentrations of nickel, vanadium, and iron. |
||||||||||||||
1. Scope | ||||||||||||||
1.1 These test methods cover the determination of nickel, vanadium, and iron in crude oils and residual fuels by inductively coupled plasma (ICP) atomic emission spectrometry. Two different test methods are presented. 1.2 Test Method A (Sections 1.3 Test Method B (Sections 1.4 The concentration ranges covered by these test methods are determined by the sensitivity of the instruments, the amount of sample taken for analysis, and the dilution volume. A specific statement is given in 15.2. Typically, the low concentration limits are a few tenths of a mg/kg. Precision data are provided for the concentration ranges specified in Section 21. 1.5 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.6 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 | ||||||||||||||
|
Poslední aktualizace: 01.11.2024 (Počet položek: 2 208 817)
© Copyright 2024 NORMSERVIS s.r.o.