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 Total Cyanide in Water by Micro Distillation followed by Flow Injection Analysis with Gas Diffusion Separation and Amperometric Detection
Automatische name übersetzung:
Standard Test Method for Gesamt Cyanid in Wasser von Micro Destillation, gefolgt von Fließinjektionsanalyse mit Gasdiffusions Trennung und amperometrischen Nachweis
NORM herausgegeben am 15.6.2013
Bezeichnung normen: ASTM D7284-13
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 15.6.2013
SKU: NS-38082
Zahl der Seiten: 8
Gewicht ca.: 24 g (0.05 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
amperometry, cyanide, distillation, flow injection analysis, gas diffusion membrane, total cyanide, ICS Number Code 13.060.50 (Examination of water for chemical substances)
Significance and Use | ||||||||||||||||||||
5.1 Cyanide and hydrogen cyanide are highly toxic. Regulations have been established to require the monitoring of cyanide in industrial and domestic wastes and surface waters.5.2 This test method is applicable for natural waters, industrial wastewaters and effluents. |
||||||||||||||||||||
1. Scope | ||||||||||||||||||||
1.1 This test method is used to determine the concentration of total cyanide in an aqueous wastewater or effluent. The method detects the cyanides that are free (HCN and CN-) and strong-metal-cyanide complexes that dissociate and release free cyanide when refluxed under strongly acidic conditions. 1.2 This method may not be applicable to process solutions from precious metals mining operations. 1.3 This procedure is applicable over a range of approximately 2 to 500 μg/L (parts per billion) total cyanide. Higher concentrations can be measured with sample dilution or lower injection volume. 1.4 The determinative step of this method utilizes flow injection with amperometric detection based on Test Method D6888. Prior to analysis, samples must be distilled with a micro-distillation apparatus described in this test method or with a suitable cyanide distillation apparatus specified in Test Methods D2036. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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. Specific hazard statements are given in 8.6 and Section 9. |
||||||||||||||||||||
2. Referenced Documents | ||||||||||||||||||||
|
Historisch
1.10.2009
Historisch
1.10.2009
Historisch
1.11.2011
Historisch
1.12.2009
Historisch
1.12.2009
Historisch
1.12.2009
Bereitstellung von aktuellen Informationen über legislative Vorschriften in der Sammlung der Gesetze bis zum Jahr 1945.
Aktualisierung 2x pro Monat!
Brauchen Sie mehr Informationen? Sehen Sie sich diese Seite an.
Letzte Aktualisierung: 2024-12-23 (Zahl der Positionen: 2 217 157)
© Copyright 2024 NORMSERVIS s.r.o.