Overfladeaktive stoffer Væskechromatografisk undersøgelse af indhold af ikke-ioniske stoffer i anioniske overfladeaktive stoffer

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1 Dansk Standard DS/EN udgave Godkendt: Overfladeaktive stoffer Væskechromatografisk undersøgelse af indhold af ikke-ioniske stoffer i anioniske overfladeaktive stoffer Surface active agents Determination of the content of non-ionic substances in anionic surface active agents by high performance liquid chromatograph (HPLC) DANSK STANDARD - Eftertryk uden tilladelse forbudt Kollegievej 6 DK-2920 Charlottenlund Tel (+45) Fax (+45) DANSK.STANDARD@ds.dk

2 DS/EN København DS Projekt: ICS: Deskriptorer: overfladeaktive stoffer Første del af denne publikations betegnelse er: DS/EN, hvilket betyder, at det er en europæisk standard, der har status som dansk standard. Denne publikations overensstemmelse er: IDT med: EN 13273:2001 på engelsk DS-publikationstyper DANSK STANDARD udgiver forskellige publikationstyper. Typen på denne publikation fremgår af forsiden. Der kan være tale om: Dansk standard standard, der er udarbejdet på nationalt niveau, eller som er baseret på et andet lands nationale standard eller standard, der er udarbejdet på internationalt og/eller europæisk niveau, og som har fået status som dansk standard DS-information publikation, der er udarbejdet på nationalt niveau, og som ikke har opnået status som standard, eller publikation, der er udarbejdet på internationalt og/eller europæisk niveau, og som ikke har fået status som standard, fx en teknisk rapport, eller europæisk præstandard DS-håndbog samling af standarder, eventuelt suppleret med informativt materiale DS-hæfte publikation med informativt materiale Til disse publikationstyper kan endvidere udgives tillæg og rettelsesblade DS-publikationsform Publikationstyperne udgives i forskellig form som henholdsvis fuldtekstpublikation (publikationen er trykt i sin helhed) godkendelsesblad (publikationen leveres i kopi med et trykt DS-omslag) elektronisk (publikationen leveres på et elektronisk medie) DS-betegnelse Alle DS-publikationers betegnelse begynder med DS efterfulgt af et eller flere præfikser og et nr. fx DS 383, DS/EN 5414 osv. Hvis der efter nr. er angivet at A eller Cor, betyder det, enten at det er et tillæg eller et rettelsesblad til hovedstandarden, eller at det er indført i hovedstandarden. DS-betegnelse angives på forsiden. Overensstemmelse med anden publikation: Overensstemmelse kan enten være IDT, EQV, NEQ eller MOD IDT: Når publikationen er identisk med en given publikation. EQV: Når publikationen teknisk er i overensstemmelse med en given publikation, men præsentationen er ændret. NEQ: Når publikationen teknisk eller præsentationsmæssigt ikke er i overensstemmelse med en given standard, men udarbejdet på baggrund af denne. MOD: Når publikationen er modificeret i forhold til en given publikation.

3 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN April 2001 ICS English version Surface active agents - Determination of the content of non-ionic substances in anionic surface active agents by high performance liquid chromatography (HPLC) Agents de surface - Détermination de la teneur en substances non-ioniques dans les agents de surfaces anioniques par chromatographie liquide à haute performance (CLHP) This European Standard was approved by CEN on 20 January Grenzflächenaktive Stoffe - Bestimmung des Gehaltes von nichtionischen Substanzen in anionischen grenzflächenaktiven Stoffen mittels Hochleistungs- Flüssigchromatographie (HPLC) CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13273:2001 E

4 Page 2 EN 13273:2001 Contents Page Foreword Scope Normative references Principle Reagents Apparatus Calibration Sampling and preparation of the test sample Procedure Calculation and expression of results Precision Test report...8 Annex A (informative) Flow diagram for the backflush valve in position 1 and position Annex B (informative) Example chromatograms...10 Annex C (informative) Ring test results...14

5 Page 3 EN 13273:2001 Foreword This European Standard has been prepared by Technical Committee CEN/TC 276 "Surface active agents", the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2001, and conflicting national standards shall be withdrawn at the latest by October Annexes A, B and C are informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.

6 Page 4 EN 13273: Scope This European Standard specifies a method for the determination of the contents of non-ionic substances in anionic surface active agents (sulfates, sulfonates and ethoxysulfates) by high performance liquid chromatography (HPLC). 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN ISO 3696, Water for analytical laboratory use Specification and test methods. (ISO 3696:1987) ISO 607, Surface active agents and detergents Methods of sample division. 3 Principle A specified mass of sample is dissolved and then made up to standard volume with methanol. For sulfonic acids only, the sample is neutralised with aqueous sodium hydroxide solution prior to the dissolution. The solution is then analysed by Reverse Phase High Performance Liquid Chromatography (RP-HPLC). An octadecylsilane bonded stationary phase, methanol/water mobile phase, differential refractometer detector and external means of quantification are employed. A back flush technique is used to "focus" the non-ionic components after all the active matter components and water have eluted from the column. 4 Reagents During the analysis, only use reagents of recognized analytical grade and water complying with grade 3 as defined in EN ISO Methanol, CH 4 O HPLC grade. 4.2 Sodium hydroxide NaOH c(naoh) = 1 mol/l solution. 4.3 Phenolphthalein indicator, ethanolic solution, C 20 H 14 O 4, w(c 20 H 14 O 4 ) = 0,1 g/100 g. 4.4 Calibration substances, based on the feedstock from which the surface active agent/sulfonic acid has been produced, eg. : parent linear alkyl benzene (LAB) for alkyl benzene sulfonates ; parent alcohols for alcohol sulfates ; parent alcohol ethoxylates for alcohol ethoxy sulfates. 5 Apparatus Ordinary laboratory apparatus and the following. 5.1 High performance liquid chromatograph, suitable for analysis according to the conditions given in Datta logger/plotter giving the chromatographic peak areas. 5.3 Burette, capacity 10 ml with polytetrafluorethylene (PTFE) key, never lubricated with stopcock grease.

Railway applications - Testing for the acceptance of running characteristics of railway vehicles - Testing of running behaviour and stationary tests

Dansk standard DS/EN 14363 1. udgave 2005-07-15 Jernbaneudstyr Kontrolprøvning af jernbanevognes kørekarakteristikker Prøvning af køreadfærd samt stationær prøvning Railway applications - Testing for the