Mercury determination in natural gas using amalgamation method according to ASTM D5954-98(2014)E1 and ISO 6978-2:2003

INTRODUCTION

The ASTM D5954-98(2014)e1 and ISO 6978-2:2003 standards specify a method for the determination of the mercury mass concentration down to 0.001 μg/m³ in pipeline quality natural gas. These standard methods are based on collection of mercury by amalgamation on a gold/platinum alloy with the follow-up desorption of atomic mercury and its determination by means of AAS or AFS. Lumex Instruments has developed a practical guidance for the implementation of the ASTM D5954-98(2014)e1 and ISO 6978-2:2003 methods using RA-915M mercury analyzer.