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ASTM D4735-96(2000)
Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography
Automaticky preložený názov:
Štandardná skúšobná metóda pre stanovenie stopových thiofenového rafinovanom Benzén plynovou chromatografiou
NORMA vydaná dňa 1.1.2000
Informácie o norme:
Označenie normy: ASTM D4735-96(2000)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.1.2000
Kód tovaru: NS-28364
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Anotácia textu normy ASTM D4735-96(2000) :
Keywords:
benzene, flame photometric detector, gas chromatography, thiophene, ICS Number Code 71.080.15 (Aromatic hydrocarbons)
Doplňujúce informácie
| 1. Scope | ||||||||||||||||||||||||||||||
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1.1 This test method covers the determination of thiophene in refined benzene in the range from 0.5 mg/kg to 5.0 mg/kg. The range of the test method may be extended by modifying the sample injection volume, calibration range, or sample dilution with thiophene-free solvent. 1.2 This test method has been found applicable to benzene characteristic of the type described in Specifications D2359 and D4734 and may be applicable to other types or grades of benzene only after the user has demonstrated that the procedure can completely resolve thiophene from the other organic contaminants contained in the sample. 1.3 The following applies to all specified limits in this test method: for purposes of determining conformance with this test method, an observed value or a calculated value shall be rounded off "to the nearest unit" in the last right-hand digit used in expressing the specification limit in accordance with the rounding-off method of Practice E29. 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.For specific hazard statements, see Section 7. |
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| 2. Referenced Documents | ||||||||||||||||||||||||||||||
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