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 Method for Low-Molecular Weight Halogenated Hydrocarbons in Water
Automaticky přeložený název:
Standardní zkušební metoda pro nízkomolekulární halogenované uhlovodíky ve vodě
NORMA vydána dne 1.5.2011
Označení normy: ASTM D3973-85(2011)
Poznámka: NEPLATNÁ
Datum vydání normy: 1.5.2011
Kód zboží: NS-25563
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
drinking water, electrolytic conductivity detector, electron capture detector, gas chromatography, halogenated hydrocarbons, Hydrocarbon content, Low-molecular weight halogenated hydrocarbons, Organic compounds--water, Gas chromatography (GC)--water, ICS Number Code 13.060.50 (Examination of water for chemical substances)
Significance and Use | ||||||||
The incidental conversion of organic material to trihalomethanes and other volatile organohalides during chlorination of water is a possible health hazard and is the object of much research. This test method can be used as a rapid, simple means for determining many volatile organohalides in raw and processed water. |
||||||||
1. Scope | ||||||||
1.1 This test method covers the analysis of drinking water. It is also applicable to many environmental and waste waters when adequate validation is included. 1.2 This test method covers the determination of halomethanes, haloethanes, and some related extractable organohalides amenable to gas chromatographic measurement. The applicable concentration range for trihalomethanes is from 1 to 200 μg/L. Detection limits depend on the compound, matrix, and on the characteristics of the gas chromatographic system. 1.3 For compounds not specifically included in the precision and bias section the analyst should validate the test method by collecting precision and bias data on actual samples. 1.4 Confirmation of component identities is obtained by observing retention times using gas chromatographic columns of different polarities. When concentrations are sufficiently high (>50 μg/L) confirmation with halogen specific detectors or gas chromatography/mass spectrometry (GC/MS) may be used. Confirmation of purgeable compounds at levels down to 1 μg/L can be obtained using Test Method D3871 with GC/MS detection. 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 precautionary statements are given in Section 8. |
||||||||
2. Referenced Documents | ||||||||
|
Historická
1.9.2012
Historická
1.10.2009
Historická
15.5.2009
Historická
1.9.2011
Historická
1.1.2013
Historická
15.6.2012
Chcete mít jistotu, že používáte pouze platné technické normy?
Nabízíme Vám řešení, které Vám zajistí měsíční přehled o aktuálnosti norem, které používáte.
Chcete vědět více informací? Podívejte se na tuto stránku.
Poslední aktualizace: 23.12.2024 (Počet položek: 2 217 157)
© Copyright 2024 NORMSERVIS s.r.o.