ISO 10348-1993 PDF

Full title and description

ISO 10348:1993 — Photography — Processing wastes — Determination of silver content. The standard specifies analytical procedures and supporting sample-treatment methods for measuring silver in photographic processing wastes, including a flame atomic absorption spectroscopy (AAS) procedure and two potentiometric iodide titration (PT) procedures.

Abstract

This International Standard gives three analytical procedures (one AAS method and two potentiometric iodide titration methods) and two sample-treatment/digestion procedures appropriate to different sample types. The methods cover both preserved/cyanogen-iodide-treated samples (suitable for direct AAS) and digested samples required for PT analysis.

General information

• Status: Published (International Standard; confirmed during periodic review).
• Publication date: February 1993 (1993-02).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: Photography; water analysis / waste-water testing — ICS 13.030.30 (photography-related standards).
• Edition / version: Edition 1 (1993).
• Number of pages: 14 (original ISO edition; some national adoptions/translations include additional national front/back matter and may show larger page counts).

Scope

Specifies laboratory methods for the determination of silver content in photographic processing wastes (effluents and residues) so laboratories and regulatory bodies can quantify silver concentrations for monitoring, compliance and process control. The standard indicates which sample treatments are appropriate for each analytical technique and gives procedural steps for sample digestion, titration and instrumental analysis.

Key topics and requirements

• Analytical techniques: flame atomic absorption spectroscopy (AAS) for direct analysis of certain preserved samples, and two potentiometric iodide titration (PT) methods for digested samples.
• Sample-treatment procedures: two digestion/treatment options depending on sample matrix (low-salinity effluents vs. samples with high suspended solids) and on the chosen analytical method.
• Requirements for sample preservation, handling and preparation to ensure accurate determination of silver content.
• Performance and procedural details for titration end-point detection and for AAS calibration/measurement procedures.

Typical use and users

Used by analytical and environmental laboratories, photographic processing facilities, wastewater compliance officers, environmental consultants and regulatory agencies for monitoring and reporting silver concentrations in photographic effluents and related wastes. Laboratories adopt the methods for process control, discharge compliance testing and investigations of silver recovery/recycling processes.

Related standards

National adoptions and translations of ISO 10348:1993 exist (for example, BS ISO 10348:1993, ČSN ISO 10348, etc.). Related ISO test-method standards and national wastewater analysis methods for metal determination may be used alongside ISO 10348 when broader water chemistry or regulatory programs require additional analytes or alternative measurement techniques.

Keywords

silver, photography, photographic processing wastes, effluents, determination of silver, atomic absorption spectroscopy (AAS), potentiometric iodide titration (PT), sample digestion, wastewater analysis.

FAQ

Q: What is this standard?

A: ISO 10348:1993 is an International Standard that specifies procedures to determine the silver content in wastes from photographic processing, including both instrumental and titrimetric methods.

Q: What does it cover?

A: It covers three analytical procedures (one flame AAS method and two potentiometric iodide titration methods), the sample-treatment/digestion procedures required by those methods, and guidance on sample preservation and preparation for accurate silver measurement.

Q: Who typically uses it?

A: Environmental and chemical testing laboratories, photographic processing plants, environmental regulators and consultants who monitor silver in industrial effluents and manage photographic waste streams.

Q: Is it current or superseded?

A: The edition was published in February 1993 (Edition 1). The ISO record indicates the standard has been maintained under periodic systematic review and shows confirmation activity in ISO’s lifecycle history; as of the most recent ISO review entries, the 1993 edition remains the published/confirmed edition. Users should check with their national standards body for any more recent national replacements or amendments before relying on the text for regulatory work.

Q: Is it part of a series?

A: ISO 10348:1993 is a standalone test-method standard focused on silver determination in photographic processing wastes. It is part of the broader body of ISO standards dealing with photography, analytical chemistry and water/wastewater testing but is not a multi-part ISO series in itself.

Q: What are the key keywords?

A: Silver, photographic effluents, wastewater, AAS, potentiometric titration, sample digestion, determination, photography processing wastes.