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 Mercury in Caustic Soda (Sodium Hydroxide) and Caustic Potash (Potassium Hydroxide)
Automaticky preložený názov:
Štandardná skúšobná metóda pre Merkúr v lúhu sodného (hydroxid sodný) a hydroxidu draselného (hydroxid draselný)
NORMA vydaná dňa 15.12.2008
Označenie normy: ASTM E538-98(2008)
Poznámka: NEPLATNÁ
Dátum vydania normy: 15.12.2008
Kód tovaru: NS-47136
Počet strán: 6
Približná hmotnosť: 18 g (0.04 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
caustic potash, caustic soda, flameless atomic absorption, mercury, potassium hydroxide, sodium hydroxide, Mercury--chemicals, Sodium hydroxide, Spectrophotometry--atomic absorption, ICS Number Code 71.040.40 (Chemical analysis)
Significance and Use | ||||
Mercury is a toxic material and is also deleterious if present in caustic soda and caustic potash used in certain manufacturing processes. It must therefore be controlled as a possible pollutant. These test methods provide a procedure for measuring mercury in liquid and solid caustic soda and caustic potash. |
||||
1. Scope | ||||
1.1 These test methods cover the routine determination of mercury in caustic soda and caustic potash liquors and anhydrous caustic soda in the solid, flake, ground, and bead form by the flameless atomic absorption method. 1.2 Two test methods are described as follows: Test Method A employs a direct analysis of the sample using an alkaline reducing agent with a lower limit of detection of 0.1 ppb (ng/g). Test Method A was developed using caustic soda and caustic potash. Test Method B requires a preliminary neutralization of the sample followed by a permanganate oxidation before it can be analyzed by an acidic reducing agent with a lower limit of detection of this test method of 0.01 ppm (μg/g). Test Method B was developed using caustic soda. 1.3 The values stated in SI units are to be regarded as the 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. Specific hazards statements are given in Section 7 and 17. 1.5 Review the current material safety data sheets (MSDS) for detailed information concerning toxicity, first-aid procedures, and safety precautions. |
||||
2. Referenced Documents | ||||
|
Historická
15.6.2013
Historická
1.1.2008
Historická
1.8.2008
Historická
15.10.2008
Historická
1.10.2013
Historická
1.9.2011
Chcete mať istotu, že používate len platné technické normy?
Ponúkame Vám riešenie, ktoré Vám zaistí mesačný prehľad o aktuálnosti noriem, ktoré používate.
Chcete vedieť viac informácií ? Pozrite sa na túto stránku.
Posledná aktualizácia: 2024-11-22 (Počet položiek: 2 206 568)
© Copyright 2024 NORMSERVIS s.r.o.