Standard Test Method for Sampling and Analysis of Liquid Chlorine for Gaseous Impurities

Importancia y uso:

4.1 It is very difficult to exclude sample contamination by ambient air during the process of sampling. The levels of atmospheric contamination caused by poor sampling methods are often equal to or larger than the levels of the gaseous impurities present in the chlorine. This results in markedly elevated levels of detected impurities. As specifications become tighter, it becomes more important to measure the gaseous impurity levels in liquid chlorine correctly.

4.2 Additional problems are experienced in the sampling of liquefied gases for the gaseous impurities. The gaseous impurities reach an equilibrium between the liquid phase and vapor phase in a sample bomb. The quantity of gases measured in any particular sample containing both liquid and vapor will be a function of the amount of vapor space in the sample bomb. This test method avoids the presence of liquid in the sample bomb.

Subcomité:

D16.13

Referida por:

E1120-21

Volúmen:

06.04

Número ICS:

71.060.10 (Chemical elements)

Palabras clave:

analysis; carbon dioxide; carbon monoxide; gas chromatography; hydrogen; inert gases; liquid chlorine; nitrogen; oxygen;