ISO 157:2025
Coal — Determination of forms of sulfur
Название (английский):
ISO 157:2025
Coal — Determination of forms of sulfur
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 18
- Дата публикации:
- 15 мая 2025 г.
- Издание:
- ISO IS 157 edition 3 version 1
- ICS:
- 73.040
Тип поставки:
Язык документа:
Срок поставки:1 рабочий день
Цена:25 €
Описание (английский):
This document specifies methods of determining the sulfate and pyritic sulfur mass fraction of coals, and of calculating the amount of organic sulfur present.
Abstract
Overview
ISO 157:2025 - Coal - Determination of forms of sulfur specifies standardized analytical methods for quantifying sulfate sulfur and pyritic sulfur in coal and for calculating organic sulfur by difference. The third edition updates procedural clauses and adds a formula for organic sulfur. The procedures rely on differential solubility under reflux and subsequent analytical finishes to deliver reproducible sulfur speciation for coal quality and research purposes.
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