ISO 601-1981 rus PDF

Full title and description

ST ISO 601-1981 rus — Solid mineral fuels — Determination of arsenic content using the silver diethyldithiocarbamate photometric method (reference method ISO 2590). This entry refers to ISO 601:1981 and the Russian-language designation/packaging ("rus"); the original International Standard was published in English/French by ISO and specifies the application of the ISO 2590 arsenic photometric method to coal, lignite and coke.

Abstract

ISO 601:1981 gives a procedure for photometric determination of arsenic in solid mineral fuels (hard coal, brown coal, lignite and coke) by oxidizing the sample, producing arsine by zinc reduction, absorbing arsine into a solution of silver diethyldithiocarbamate in pyridine, and measuring the purplish‑red colour at about 540 nm. The method implements the general ISO 2590 silver diethyldithiocarbamate photometric technique for arsenic.

General information

• Status: Withdrawn (ISO 601:1981 is listed as withdrawn).
• Publication date: December 1981 (Edition 1, 1981-12).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 75.160.10 — Solid mineral fuels / coal analysis.
• Edition / version: Edition 1 (1981).
• Number of pages: 4 pages (original ISO printed edition).

Scope

This standard applies the general photometric arsenic determination procedure of ISO 2590 to solid mineral fuels. It covers sample oxidation (nitric and sulphuric acids or Eschka mixture), conversion to arsine by zinc reduction in acidic medium, absorption of arsine in silver diethyldithiocarbamate (in pyridine) and photometric measurement at ~540 nm. The method is intended for routine determination of arsenic levels in coal and coke test portions within the method’s stated working range.

Key topics and requirements

• Application of the ISO 2590 silver diethyldithiocarbamate photometric method specifically to solid mineral fuels.
• Sample preparation: oxidation by nitric/sulphuric acids or Eschka mixture prior to arsenic conversion.
• Generation of arsine by zinc reduction in acid medium and absorption into silver diethyldithiocarbamate solution.
• Photometric measurement of the purplish‑red colloidal silver complex at ≈540 nm.
• Method working range and typical test‑portion guidance as given by ISO 2590 (method applicable to appropriate aliquots/test portions to achieve the recommended sensitivity).
• Health and safety considerations: toxic reagents (pyridine) and generation of arsine gas require fume‑cupboard use and appropriate precautions (implied by method chemistry).

Typical use and users

Used historically by coal testing laboratories, fuel quality control groups, industrial analytical laboratories and regulatory bodies concerned with arsenic content in solid fuels. Typical users include analytical chemists performing elemental determinations on coal, quality assurance teams in fuel production, and environmental/health laboratories assessing pollutant levels from combustion sources.

Related standards

Primary related reference is ISO 2590 (General method for the determination of arsenic — silver diethyldithiocarbamate photometric method), which provides the base photometric technique applied by ISO 601. Other complementary standards address arsenic in different matrices or alternative methods and broader coal analysis standards (for example, standards on coal mineral matter and other elemental determinations).

Keywords

arsenic, arsenic determination, silver diethyldithiocarbamate, photometric method, ISO 2590, coal analysis, solid mineral fuels, lignite, coke, withdrawn standard, ST ISO 601-1981, Russian edition

FAQ

Q: What is this standard?

A: ISO 601:1981 is an International Standard that specifies the application of the silver diethyldithiocarbamate photometric arsenic determination method (ISO 2590) to solid mineral fuels (coal, lignite, coke). It was published in December 1981.

Q: What does it cover?

A: It covers sample oxidation and preparation, production of arsine by zinc reduction, absorption of arsine into silver diethyldithiocarbamate in pyridine and photometric measurement of the resulting colour at about 540 nm, as applied to test portions of solid fuels.

Q: Who typically uses it?

A: Analytical and fuel‑testing laboratories, quality control and environmental/regulatory laboratories concerned with determining arsenic content in coal and coke. These users apply the method for routine or compliance analyses where the photometric technique is appropriate.

Q: Is it current or superseded?

A: ISO 601:1981 is listed as withdrawn. The referenced general method ISO 2590 is also a historical ISO method (withdrawn in some repositories); laboratories commonly now consider alternative, modern instrumental methods (e.g., atomic absorption or ICP techniques) for arsenic when greater safety, sensitivity or throughput is required.

Q: Is it part of a series?

A: ISO 601 is not a multipart series itself but is an application of ISO 2590 (the general arsenic photometric method). It sits within the family of standards for chemical analysis of solid mineral fuels (ICS 75.160.10) and is linked conceptually to other coal analysis standards.

Q: What are the key keywords?

A: arsenic, silver diethyldithiocarbamate, photometry, coal, lignite, coke, ISO 601, ISO 2590, solid mineral fuels.