ISO 6978-1:2003

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Natural gas — Determination of mercury — Part 1: Sampling of mercury by chemisorption on iodine

ISO 6978-1:2003 refers to an international standard that specifies a method for determining the total mercury content in natural gas, specifically focusing on the sampling of mercury by chemisorption on iodine-impregnated silica gel; essentially, it outlines a procedure to measure the amount of mercury present in natural gas samples using a technique where mercury molecules are captured by an iodine-coated material.