Каталог стандартов

+7 (495) 223-46-76 +7 (812) 309-78-59
inform@normdocs.ru

ÖNORM EN ISO 9562:2004-12

Действует
Water quality - Determination of adsorbable organically bound halogens (AOX) (ISO 9562:2004)
This International Standard specifies a method for the direct determination of an amount of usually 10 ug/l in
water of organically bound chlorine, bromine and iodine (expressed as chloride) adsorbable on activated
carbon.
This method is applicable to test samples (see 9.2) with concentrations of inorganic chloride ions of less than
1 g/l. Samples with higher concentrations are diluted prior to analysis.
This method is also applicable to samples containing suspended solids where halogens are adsorbed onto the
solid matter (e.g. insoluble halides). Filtration of the sample before analysis allows the separate determination
of dissolved and particulate adsorbable organically bound halogens (AOX).
Filtered samples with high inorganic chloride content can be analysed by a modified method [dissolved
adsorbable organically bound halogens after solid phase extraction in waters with high salt content (SPEAOX)]
(see Annex A). However, results obtained by this modified method can differ significantly from those of
the required method.
Das Dokument legt ein Verfahren fest für die direkte Bestimmung einer Massenkonzentration von mehr als 10 µg/l der in Wasser organisch gebundenen Halogene Chlor, Brom und lod (angegeben als Chlorid), die an Aktivkohle adsorbierbar sind. Die Konzentration an anorganischen Chlorid-Ionen in der Analysenprobe muss unter 1 g/l liegen. Proben mit höheren Konzentrationen müssen vor der Analyse verdünnt werden. Wenn eine Filtration vorgenommen wird, kann diese nach dem modifizierten Verfahren (SPE-AOX) vorgenommen werden.
ICS
13.060.50 Examination of water for chemical substances / Исследование воды для определения содержания химических веществ