I.S. EN ISO 15681-2:2005
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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WATER QUALITY - DETERMINATION OF ORTHOPHOSPHATE AND TOTAL PHOSPHORUS CONTENTS BY FLOW ANALYSIS (FIA AND CFA) - PART 2: METHOD BY CONTINUOUS FLOW ANALYSIS (CFA)
Hardcopy , PDF
English
01-01-2005
10-01-2019
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
Foreword
Introduction
1 Scope
2 Normative references
3 Interferences
3.1 General interferences
3.2 Interferences in the determination of total-P
4 Principle
4.1 Determination of orthophosphate
4.2 Total phosphorus with manual digestion
4.3 Total phosphorus with integral UV digestion and
hydrolysis
5 Reagents
6 Apparatus
6.1 Continuous-flow analysis (CFA)
6.2 Additional apparatus
6.3 Additional apparatus for the determination of total
phosphorus after integral digestion
7 Sampling and sample preparation
8 Procedure
8.1 Preparation for analysis
8.2 Instrument performance check
8.3 Reagent blank check
8.4 Calibration
8.5 Check of UV digestion and hydrolysis for total P
determination
8.6 Measurement
8.7 Closing down the system
9 Calculation of results
10 Expression of results
11 Test report
Annex A (informative) Examples of a CFA system
Annex B (informative) Precision and accuracy
Annex C (informative) Determination of orthophosphate-P and
total-P by CFA and tin(II) chloride reduction
Bibliography
Provides CFA methods for the determination of orthophosphate in the mass concentration range from 0,01 mg/l to 1,00 mg/l (P), and total phosphorus in the mass concentration range from 0,10 mg/l to 10,0 mg/l (P).
| DocumentType |
Standard
|
| Pages |
28
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| ONORM EN ISO 15681-2 : 2005 | Identical |
| NEN EN ISO 15681-2 : 2005 | Identical |
| DIN EN ISO 15681-2:2005-05 | Identical |
| NF EN ISO 15681-2 : 2005 | Identical |
| ISO 15681-2:2003 | Identical |
| NBN EN ISO 15681-2 : 2005 | Identical |
| BS EN ISO 15681-2:2004 | Identical |
| EN ISO 15681-2:2004 | Identical |
| NS EN ISO 15681-2 : 1ED 2005 | Identical |
| UNE-EN ISO 15681-2:2005 | Identical |
| 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 5667-1:2006 | Water quality — Sampling — Part 1: Guidance on the design of sampling programmes and sampling techniques |
| ISO 5725-2:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| ISO 8466-1:1990 | Water quality — Calibration and evaluation of analytical methods and estimation of performance characteristics — Part 1: Statistical evaluation of the linear calibration function |
| ISO 6878:2004 | Water quality — Determination of phosphorus — Ammonium molybdate spectrometric method |
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