Standard Svensk standard · SS-EN ISO 15681-2:2018

Vattenundersökningar - Bestämning av ortofosfat och totalhalt fosfor genom flödesanalys (FIA och CFA) - Del 2: Metod med kontinuerligt flöde (ISO 15681-2:2018)

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Standard Svensk standard · SS-EN ISO 15681-2:2018

Vattenundersökningar - Bestämning av ortofosfat och totalhalt fosfor genom flödesanalys (FIA och CFA) - Del 2: Metod med kontinuerligt flöde (ISO 15681-2:2018)
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Omfattning
This document specifies continuous flow analysis (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. The method includes the digestion of organic phosphorus compounds and the hydrolysis of inorganic polyphosphate compounds, performed either manually, as described in ISO 6878 and in References [4], [5] and [7], or with an integrated ultraviolet (UV) digestion and hydrolysis unit.
This document is applicable to various types of water, such as ground, drinking, surface, leachate and waste water. The range of application can be changed by varying the operating conditions.
This method is also applicable to the analysis of seawater, but with changes in sensitivity by adapting the carrier and calibration solutions to the salinity of the samples.
It is also applicable to analysis using 10 mm to 50 mm cuvettes depending on the desired range. For extreme sensitivity, 250 mm and 500 mm long way capillary flow cells (LCFCs) can be used. However, the method is not validated for these two uses. Changes in sensitivity and calibration solutions could be required.
Annex A provides examples of a CFA system. Annex B gives performance data from interlaboratory trials. Annex C gives information of determining orthophosphate-P and total-P by CFA and tin(II) chloride reduction.

Ämnesområden

Undersökning av vatten efter kemiska substanser (13.060.50)


Köp denna standard

Standard Svensk standard · SS-EN ISO 15681-2:2018

Vattenundersökningar - Bestämning av ortofosfat och totalhalt fosfor genom flödesanalys (FIA och CFA) - Del 2: Metod med kontinuerligt flöde (ISO 15681-2:2018)
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Produktinformation

Språk: Engelska

Framtagen av: Kemiska vattenundersökningar, SIS/TK 424

Internationell titel: Water quality - Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) - Part 2: Method by continuous flow analysis (CFA) (ISO 15681-2:2018)

Artikelnummer: STD-80008262

Utgåva: 2

Fastställd: 2018-12-11

Antal sidor: 32

Ersätter: SS-EN ISO 15681-2:2005