3856/3 OS International Standard INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONMEXKAYHAPOAHAA OPrAHM3ALMA NO CTAHAAPTM3ALWMORGANISATION INTERNATIONALEDE NORMALISATION Ns Imlemol To Eo! Paints and varnishes -- Determination of "soluble metal content - Part 3: Determination of barium content - Flame atomic emission spectrometric method Methode par spectrometrie d'emission atomique dans la flamme Second edition --- 1984-11-01 isO 3856/3-1984 (E) UDC 667.6 : 543.423 : 546.431 Ref. No. ISO 3856/3-1984 (E) spectrometry. Price based on 4:pages Copyright International Organization for Standardization from IHS Not for Resale Foreword tso (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 out through Iso technical 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 the technical committees are circulated to 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. InternationalStandardISO3856/3wasprepared byTechnicalCommitteeISO/TC35, Paints and varnishes. IS0 3856/3 was first published in 1980. This second edition cancels and replaces the first edition, of which it constitutes a thorough revision. @ International Organization for Standardization, 1984 Printed in Switzerland Copyright InternationalOrganization for Standardization from IHS Not for Resal INTERNATIONAL STANDARD ISO 3856/3-1984 (E) Paints and varnishes - Determination of "soluble" metal content - Part 3: Determination of barium content -- Flame atomic emission spectrometric method 0 Introduction 3' Principle This International Standard is a part of ISO 3856, Paints and Aspiration of the test solution into a dinitrogen monoxide/ varnishes - Determination of "soluble" metal content. 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 Scope and field of application 1 chloride. This part of Is0 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 4 other suitable international Standards. During the analysis, use only reagents of recognized analytical grade and only water of at least grade 3 purity according to contents in the range of about 0,05 to 5 % (m/ m). ISO 3696. 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. 2 References 4.2 Hydrochloric acid, c(HCI) = 0,07 mol/l. Iso 385/1, Laboratory glassware Burettes Part 1: General requirements, 1] Use the hydrochloric acid, identical to that used for the prep aration of the test solutions in accordance with ISO 6713. Iso 648, Laboratory glassware - One-mark pipettes. (See 6.2.) Iso 1042, Laboratory glassware - One-mark volumetric flasks. 4.3 Dinitrogen monoxide, commercial grade, in a steel cylinder. Iso 3696, Water for laboratory use -- Specifications.2) IsO 6713, Paints and varnishes -- Preparation of acid extracts 4.4 Acetylene, commercial grade, in a steel cylinder. from paints in liquid or powder form. 1) At present at the stage of draft. (Partial revision of ISO/R 385-1964.) 2) At present at the stage of draft. L Not for Resale sefrom IHS