NATIONAL FOREWORD

This Indian Standard which is identical with ISO 19579 : 2006 ‘Solid mineral fuels — Determination of sulfur by IR spectrometry’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Solid Mineral fuels and Solid Biofuels Sectional Committee and approval of the Petroleum, Coal and Related Products Division Council.

Sulfur is normally present in coal in three forms; inorganic sulfides such as pyrite (Fes2) inorganic sulfates associated with the mineral matter and organic sulfur in the carbonaceous substance.

This standard describes a high-temperature combustion/infrared absorption method of analysis, which is used to determine the total sulfur content of coal.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.