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ASTM D7365-09a(2022)
Standard Practice for Sampling, Preservation and Mitigating Interferences in Water Samples for Analysis of Cyanide (Includes all amendments and changes 5/13/2022).
NORMA vydaná dňa 1.5.2022
Informácie o norme:
Označenie normy: ASTM D7365-09a(2022)
Dátum vydania normy: 1.5.2022
Kód tovaru: NS-1057596
Počet strán: 11
Približná hmotnosť: 33 g (0.07 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D7365-09a(2022) :
Keywords:
available cyanide, cyanide, free cyanide, hydrogen cyanide, interference, preservative, sample collection, total cyanide,, ICS Number Code 13.060.50 (Examination of water for chemical substances)
Doplňujúce informácie
| Significance and Use | ||||||||||||||||||||||||||||||||||||
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5.1?Cyanide is routinely analyzed in water samples, often to demonstrate regulatory compliance; however, improper sample collection or pretreatment can result in significant positive or negative bias potentially resulting in unnecessary permit violations or undetected cyanide releases into the environment. |
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| 1. Scope | ||||||||||||||||||||||||||||||||||||
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1.1?This practice is applicable for the collection and preservation of water samples for the analysis of cyanide. This practice addresses the mitigation of known interferences prior to the analysis of cyanide. Responsibilities of field sampling personnel and the laboratory are indicated. 1.2?The sampling, preservation and mitigation of interference procedures described in this practice are recommended for the analysis of total cyanide, available cyanide, weak acid dissociable cyanide, and free cyanide by Test Methods D2036, D4282, D4374, D6888, D6994, D7237, D7284, and D7511. The information supplied in this practice can also be applied to other analytical methods for cyanide, for example, EPA Method 335.4. 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?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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5?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. |
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| 2. Referenced Documents | ||||||||||||||||||||||||||||||||||||
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