3856/3 International Standard OSI INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONME KAYHAPOAHAA OPAHM3AUMR NO CTAHAAPTW3AUWM+ORGANISATION INTERNATIONALE DE NORMALISATION ANsl Imteroo T Eo! Paints and varnishes --- Determination of."soluble" metal content Part 3: Determination of barium content - Flame atomic emission spectrometric method Peintures etvernis-Déterminationdela teneurenmetaux《solubles》-Partie3:Determinationdela teneurenbaryum Methodeparspectrometried'émissionatomiquedanslaflamme Second edition--1984-11-01 iSO 3856/3-1984 (E) UDC667.6:543.423:546.431 Ref.No.1SO3856/3-1984 (E) Descriptors: paints, varnishes, printing inks, pigments, chemical analysis, determination of content, soluble matter, barium, atomic emission spectrometry. Price based on 4:pages Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (Iso member bodies).The work of preparing International Standards is normally carried outthrough ISOtechnical committees.Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee.international organizations, govern- mental and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by thetechnical committeesare circulatedto the member bodies for approval before their acceptance as International Standards by the ISo Council. They are approved in accordance with ISo procedures requiring at least 75 % approval by the member bodies voting. International StandardISO3856/3wasprepared byTechnical Committee ISO/TC35, Paints and varnishes, Iso 3856/3 was first published in 1980. This second edition cancels and replaces the first edition, of which it constitutes athorough revision. @InternationalOrganizationforStandardization,1984 Printed in Switzerland INTERNATIONALSTANDARD ISO3856/3-1984(E) Paints and varnishes - Determination of "soluble" metal content - Part 3: Determination of barium content - Flame atomic emission spectrometricmethod Introduction 0 3° Principle This International Standard is a part of Iso 3856, Paints and Aspiration of the test solution into a dinitrogen monoxide/ varnishes-Determinationof"soluble"metalcontent. acetylene flame. Measurement of the radiation emitted by barium at a wavelength of 553,5 nm. The ionization of barium atoms in the flame is suppressed by addition of potassium Scopeandfieldofapplication 1 chloride. This part of IS 3856 describes a flame atomic emission spec- trometric (AES)method for the determination of the barium content of the test solutions prepared according to ISo 6713 or Reagents and materials othersuitable International Standards 4 During the analysis, use only reagents of recognized analytical The method is applicable to paints having "soluble" barium contents in the range of about 0,05 to 5 % (m/m). grade and only water of at least grade 3 purity according to ISO3696. Other methods can be used by agreement between the in- terested parties but this method is the referee method in cases of dispute. 4.1 Potassium chloride,50 g/l solution. 2References 4.2 Hydrochloric acid, c(HCI) = 0,07 mol/l. Iso385/1,Laboratoryglassware Burettes Part 1: Use the hydrochloric acid, identical to that used for the prep- Generalrequirements.i) aration of the test solutions in accordance with Iso 6713. Iso648,Laboratoryglassware-One-markpipettes. (See 6.2.) iso1042,Laboratoryglassware- One-markvolumetric flasks. 4.3 Dinitrogen monoxide, commercial grade, in a steel cylinder. Iso3696,Waterforlaboratoryuse-Specifications.2) ISo 6713,Paints andvarnishes-Preparation ofacidextracts frompaints in liquidorpowderform. 4.4 Acetylene, commercial grade, in a steel cylinder. 1) At present at the stage of draft. (Partial revision of ISO/R 385-1964.) 2) At present at the stage of draft. 1