Potrebujeme váš súhlas na využitie jednotlivých dát, aby sa vám okrem iného mohli ukazovať informácie týkajúce sa vašich záujmov. Súhlas udelíte kliknutím na tlačidlo „OK“.
Standard Test Method for Low-Molecular Weight Halogenated Hydrocarbons in Water
NORMA vydaná dňa 15.12.2017
Označenie normy: ASTM D3973-85(2017)
Poznámka: NEPLATNÁ
Dátum vydania normy: 15.12.2017
Kód tovaru: NS-803812
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
drinking water, electrolytic conductivity detector, electron capture detector, gas chromatography, halogenated hydrocarbons,, ICS Number Code 13.060.50 (Examination of water for chemical substances)
Significance and Use | ||||||||
5.1 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 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 | ||||||||
|
Chcete mať istotu o platnosti využívaných predpisov?
Ponúkame Vám riešenie, aby ste mohli používať stále platné (aktuálne) legislatívne predpisy
Chcete vedieť viac informácií ? Pozrite sa na túto stránku.
Posledná aktualizácia: 2024-11-21 (Počet položiek: 2 206 478)
© Copyright 2024 NORMSERVIS s.r.o.