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BS ISO 10348:1993

BS ISO 10348:1993

Current

Current

The latest, up-to-date edition.

Photography. Processing wastes. Determination of silver content

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-15-1996

Publisher

British Standards Institution

1 Scope
2 Normative references
3 Principle
3.1 Flame atomic absorption spectroscopy (AAS)
     methodology
3.2 Potentiomentric titration (PT) methodology
4 Reliability
5 Safety and operational precautions
5.1 Hazard warnings
5.2 Hazard information code system
5.3 Safety precautions
5.4 Operational precautions
6 Reagents
7 Glassware
8 Sampling and sample pretreatment
8.1 Sampling and preservation
8.2 Sample size and pretreatment
9 Preparation of test sample
9.1 Cyanogen iodide (CNI) treatment
9.2 Concentration and digestion (Digestion A)
9.3 Vigorous digestion (Digestion B)
10 Analysis by atomic absorption spectroscopy (AAS)
10.1 Special apparatus
10.2 Procedure
11 Analysis by potentiometric iodide titration (PT)
11.1 Special apparatus
11.2 Procedure
11.3 Calculations for titration methods
Annex
A Preparation of reagent solutions
A.1 Preparation of cyanogen iodide solution (CNI)
     (DANGER: << S >> < B > < C >)
A.2 Preparation of silver standard solutions (0,5 mg/1,
     1.0 mg/1, 3,0 mg/1 and 5.0 mg/1) for AAS method
A.3 Preparation of silver nitrate standard solutions
     (0,100 mol/1, 0,0010 mol/1 and 0,001 mol/1) for PT
     methods
A.4 Preparation of potassium iodide standard solutions
     (0,1 mol/1, 0,01 mil/1 and 0,001 mol/1)

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

Committee
CPW/42
DevelopmentNote
Supersedes 90/44775 DC. (07/2005) Reviewed and confirmed by BSI, December 2013. (11/2013)
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Current

Standards Relationship
ISO 10348:1993 Identical

ISO 835-4:1981 Laboratory glassware Graduated pipettes Part 4: Blow-out pipettes
ISO 6353-1:1982 Reagents for chemical analysis — Part 1: General test methods
ISO 1042:1998 Laboratory glassware One-mark volumetric flasks
ISO 648:2008 Laboratory glassware — Single-volume pipettes
ISO 4788:2005 Laboratory glassware Graduated measuring cylinders
ISO 835-2:1981 Laboratory glassware Graduated pipettes Part 2: Pipettes for which no waiting time is specified
ISO 5667-2:1991 Water quality Sampling Part 2: Guidance on sampling techniques
ISO 5667-3:2012 Water quality Sampling Part 3: Preservation and handling of water samples
ISO 385-1:1984 Laboratory glassware — Burettes — Part 1: General requirements
ISO 835-3:1981 Laboratory glassware Graduated pipettes Part 3: Pipettes for which a waiting time of 15 s is specified
ISO 5667-1:2006 Water quality Sampling Part 1: Guidance on the design of sampling programmes and sampling techniques
ISO 6353-3:1987 Reagents for chemical analysis — Part 3: Specifications — Second series
ISO 835-1:1981 Laboratory glassware Graduated pipettes Part 1: General requirements
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods

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PDF - English
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