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 Guide for Preparation of Materials Used for the Collection and Preservation of Atmospheric Wet Deposition
Automaticky preložený názov:
Štandardné Príručka pre prípravu materiálov používaných pre zhromažďovanie a uchovávanie atmosférických mokré depozície
NORMA vydaná dňa 1.10.2013
Označenie normy: ASTM D5012-01(2013)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.10.2013
Kód tovaru: NS-29516
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
atmospheric wet deposition samples, collection materials, sample containers, sample contamination, sample preservation, ICS Number Code 07.060 (Geology. Meteorology. Hydrology)
Significance and Use | ||||||||||||||||
4.1 Some chemical constituents of AWD are not stable and must be preserved before chemical analysis. Without sample preservation, it is possible that analytes can be lost through decomposition or sorption to the storage bottles. 4.2 Contamination of AWD samples can occur during both sample preservation and sample storage. Proper selection and cleaning of sampling containers are required to reduce the possibility of contamination of AWD samples. 4.3 The natural sponge and talc-free plastic gloves used in the following procedures should be recognized as potential sources of contamination. Individual experience should be used to select products that minimize contamination. |
||||||||||||||||
1. Scope | ||||||||||||||||
1.1 This guide presents recommendations for the cleaning of plastic or glass materials used for collection of atmospheric wet deposition (AWD). This guide also presents recommendations for the preservation of samples collected for chemical analysis. 1.2 The materials used to collect AWD for the analysis of its inorganic constituents and trace elements should be plastic. High density polyethylene (HDPE) is most widely used and is acceptable for most samples including samples for the determination of the anions of acetic, citric, and formic acids. Borosilicate glass is a collection alternative for the determination of the anions from acetic, citric, and formic acid; it is recommended for samples for the determination of other organic compounds. 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 and health practices and determine the applicability of regulatory limitations prior to use. |
||||||||||||||||
2. Referenced Documents | ||||||||||||||||
|
Historická
15.9.2008
Historická
15.9.2008
Historická
1.7.2006
Historická
1.8.2011
Historická
1.10.2013
Historická
1.10.2013
Posledná aktualizácia: 2024-11-22 (Počet položiek: 2 206 568)
© Copyright 2024 NORMSERVIS s.r.o.