Wir benötigen Ihre Einwilligung zur Verwendung der einzelnen Daten, damit Sie unter anderem Informationen zu Ihren Interessen einsehen können. Klicken Sie auf "OK", um Ihre Zustimmung zu erteilen.
Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water and Wastewater by Ion Chromatography
Name übersetzen
NORM herausgegeben am 1.6.2017
Bezeichnung normen: ASTM D6919-17
Ausgabedatum normen: 1.6.2017
SKU: NS-686240
Zahl der Seiten: 10
Gewicht ca.: 30 g (0.07 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
alkali and alkaline earth cations, ammonium cation, conductivity detection, ion chromatography, wastewater, water,, ICS Number Code 13.060.50 (Examination of water for chemical substances)
Significance and Use | ||||||||||||||||||
5.1 This test method is applicable to the simultaneous determination of dissolved alkali and alkaline earth cations and ammonium in water and wastewaters. Alkali and alkaline earth cations are traditionally determined by using spectroscopic techniques, such as AAS or ICP; whereas ammonium can be measured by using a variety of wet chemical methods, including colorimetry, ammonia-selective electrode, and titrimetry. However, ion chromatography provides a relatively straightforward method for the simultaneous determination of cations, such as lithium, sodium, potassium, calcium, magnesium, and ammonium, in fewer than 20–30 min. |
||||||||||||||||||
1. Scope | ||||||||||||||||||
1.1 This test method is valid for the simultaneous determination of the inorganic alkali and alkaline earth cations, lithium, sodium, potassium, magnesium, and calcium, as well as the ammonium cation in reagent water, drinking water, and wastewaters by suppressed and nonsuppressed ion chromatography. 1.2 The anticipated range of the test method is 0.05–200 mg/L. The specific concentration ranges tested for this test method for each cation were as follows (measured in mg/L):
1.2.1 The upper limits may be extended by appropriate dilution or by the use of a smaller injection volume. In some cases, using a larger injection loop may extend the lower limits. It is the responsibility of the user to ensure the validity of this test method for concentrations if the range is extended. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 It is the user’s responsibility to ensure the validity of these test methods for waters of untested matrices. 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. For hazards statements specific to this test method, see 8.3. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
||||||||||||||||||
2. Referenced Documents | ||||||||||||||||||
|
Wollen Sie sich sicher sein, dass Sie nur die gültigen technischen Normen verwenden?
Wir bieten Ihnen eine Lösung, die Ihnen eine Monatsübersicht über die Aktualität der von Ihnen angewandten Normen sicher stellt.
Brauchen Sie mehr Informationen? Sehen Sie sich diese Seite an.
Letzte Aktualisierung: 2024-08-30 (Zahl der Positionen: 2 345 304)
© Copyright 2024 NORMSERVIS s.r.o.