ISO 7766-1:1993
Withdrawn
View Superseded by
Photography — Processing wastes — Analysis of cyanides — Part 1: Determination of hexacyanoferrate(II) and hexacyanoferrate(III) by spectrometry
Hardcopy , PDF
English
01-21-1993
04-09-2025
The principle of the test method specified is treating a sample of effluent, or diluted effluent, with a mixture of iron(II) and iron(III) ions. If Fe(CN)6 is present, a blue suspension will form. In the range of 1,0 mg/l to 10,0 mg/l, this suspension is stable and its absorbance is linear with its concentration. The absorbance is measured with a spectrometer, and the concentration determined from a previously established calibration.
| Committee |
ISO/TC 42
|
| DocumentType |
Standard
|
| Pages |
5
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy |
| Standards | Relationship |
| PIMA IT4.38 : 1998 | Identical |
| BS ISO 7766-1:1993 | Identical |
| PIMA IT4.37 : 0 | FOR PHOTOGRAPHY (PROCESSING) - EFFLUENTS - IDENTIFICATION AND ANALYTICAL METHODS |
| ANSI/PIMA IT4.41:1999 | PHOTOGRAPHY (PROCESSING) - FREE CYANIDE AT PH6, ANALYSIS FOR |
| ISO 385-2:1984 | Laboratory glassware — Burettes — Part 2: Burettes for which no waiting time is specified |
| ISO 835-4:1981 | Laboratory glassware — Graduated pipettes — Part 4: Blow-out pipettes |
| ISO 1042:1998 | Laboratory glassware — One-mark volumetric flasks |
| ISO 648:2008 | Laboratory glassware — Single-volume pipettes |
| ISO 835-2:1981 | Laboratory glassware — Graduated pipettes — Part 2: Pipettes for which no waiting time is specified |
| 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 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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