IEC 60754-3-2018 pdf free.Test on gases evolved during combustion of materials from cables – Part 3: Measurement of low level of halogen content by ion chromatography.
The method specified in this document is intended for the measurement of the content of chlorine (Cl), bromine (Br). fluorine (F) and iodine (I). by using the analytical technique of ion chromatography for analysing an aqueous solution resulting from the gases evolved during the combustion.
The heating (combustion) procedure in this part of IEC 60754 is the same as in IEC 60754-2.
The method is intended for materials with an individual halogen content not exceeding 10 mg/g.
The method specified in this document is intended for the testing of individual components used in a cable construction. The use of this method will enable the verification of requirements which are stated in the appropriate cable specification for individual components of a cable construction.
NOTE 1 The relevant cable standard indicates which components of the cable are tested.
NOTE 2 This test method is sometimes used to test materials to be used in cable manufacture.
For reasons of precision, this method is not recommended for detecting values of halogens
less than 0,1 mg/g of the sample taken.
2 NormatIve references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1042. Laboratory glassware — One-mark volumetric flasks
ISO 3696, Water for analytical laboratory use — Specification and test methods
ISO 10304-1, Water quality — Determination of dissolved anions by liquid chromatography of ions — Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
3 Terms and definItIons
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• lEG Electropedia: available at http:/Iwww.electropedia.org/
• ISO Online browsing platform: available at httpiJwww.iso.org/obp
halogen
element of periodic table group 17. specifically fluorine, chlorine, bromine, iodine
3.2 individual halogen content
amount of a halogen in a test specimen that can be converted to water soluble halide ion in the gaseous combustion effluent from the test specimen
Note 1 to entry Halide ions are fluoride, chloride, bromide or iodide,
Note 2 to entry: The halogen in the test specimen may be In the form of organic or inorganic compounds.
Note 3 to entry: The individual halogen content is expressed as milligrams of halogen per gram of test specimen.
Note 4 to entry: Halide ions in any solid combustion residue that remains in the combustion boat are not measured by this test method.
4 Test method principle
The material under test shall be heated in a stream of dry air. The evolved gases shall be trapped by bubbling through wash bottles filled with distilled or demineralized water.
Each individual halogen content of the resulting solution shall then be determined by using ion chromatography (IC).
The ion chromatography analysis can be done off line and does not have to be in line.
5 Test apparatus
5.1 General
The apparatus is shown in Figure 1 to Figure 5.IEC 60754-3 pdf free download.