I.S. EN ISO 15681-1:2005
Current
The latest, up-to-date edition.
WATER QUALITY - DETERMINATION OF ORTHOPHOSPHATE AND TOTAL PHOSPHORUS CONTENTS BY FLOW ANALYSIS (FIA AND CFA) - PART 1: METHOD BY FLOW INJECTION ANALYSIS (FIA)
Hardcopy , PDF
English
01-01-2005
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
5 Reagents
6 Apparatus
6.1 Flow injection analysis (FIA)
6.2 Additional apparatus
6.3 Additional apparatus for the determination of total
phosphorus
7 Sampling and sample preparation
8 Procedure
8.1 Analysis preparation
8.2 Instrument performance check
8.3 Reagent blank check
8.4 Calibration
8.5 Check of digestion efficiency for determination of
total-P
8.6 Measurement
8.7 Closing down the system
9 Calculation of results
10 Expression of results
11 Test report
Annex A (informative) Example of an FIA system
Annex B (informative) Precision and accuracy
Annex C (informative) Determination of orthophosphate-P and
total-P by FIA using ascorbic acid reduction
Annex D (informative) Replacement of hydrazine sulfate by
DEHA (N,N-diethylhydroxylamine)
Bibliography
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