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Homepage>BS Standards>13 ENVIRONMENT. HEALTH PROTECTION. SAFETY>13.030 Wastes>13.030.20 Liquid wastes. Sludge>BS ISO 10348:1993 Photography. Processing wastes. Determination of silver content
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immediate downloadReleased: 1996-01-15
BS ISO 10348:1993 Photography. Processing wastes. Determination of silver content

BS ISO 10348:1993

Photography. Processing wastes. Determination of silver content

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Standard number:BS ISO 10348:1993
Pages:26
Released:1996-01-15
ISBN:0 580 25113 6
Status:Standard
DESCRIPTION

BS ISO 10348:1993


This standard BS ISO 10348:1993 Photography. Processing wastes. Determination of silver content is classified in these ICS categories:
  • 13.060.50 Examination of water for chemical substances
  • 37.040.30 Photographic chemicals
  • 13.030.20 Liquid wastes. Sludge
  • 13.060.30 Sewage water

This International Standard gives methods for determining the silver content in photographic effluents from photographic processing wastes. Sampling, sample preservation and analytical methodology are included.

Three analytical procedures are given with two supporting sample treatment methodologies:

  1. a flame atomic absorption spectroscopy (AAS) method;

  2. two Potentiometrie iodide titration (PT) methods.

The choice of treatment is dependent on the analysis method and form of sample. Where AAS is the chosen method for analysis, cyanogen iodide-treated or preserved samples may be analysed directly. For the PT method, two digestion procedures are given: Digestion A for effluents with low salt content, and Digestion B for samples with high solids content.