Name: BS 6068-2.87(2003) : 2003
Brand: BSI

BS 6068-2.87(2003) : 2003

Superseded

WATER QUALITY - DETERMINATION OF ORTHOPHOSPHATE AND TOTAL PHOSPHORUS CONTENTS BY FLOW ANALYSIS (FIA AND CFA) - PART 2: METHOD BY CONTINUOUS FLOW ANALYSIS (CFA)

Superseded date

28-02-2005

Published date

23-11-2012

Publisher

British Standards Institution

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

Specifies 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.

Committee	EH/3/2
DevelopmentNote	Also numbered as BS ISO 15681-2. (02/2004)
DocumentType	Standard
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS EN ISO 15681-2:2004

Standards	Relationship
ISO 15681-2:2003	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