ISO 11890-2-2020 “Tintas e vernizes – Determination of volatile organic compounds (VOC) contente – Papel 2- Gas chromatography”
Um Prefácio
ISO (Organização Internacional para Padronização) é uma aliança global de organismos nacionais de normalização (Órgãos membros da ISO). O desenvolvimento de padrões internacionais é geralmente realizado através de comitês técnicos ISO. Cada instituição membro interessada em um assunto sobre o qual tenha sido estabelecido um comitê técnico tem o direito de ser representada no comitê. Organizações internacionais governamentais e não-governamentais que colaboram com organizações de normalização também estão envolvidas neste trabalho. A ISO trabalha em estreita colaboração com a Comissão Eletrotécnica Internacional (CEI) em todos os assuntos de padronização elétrica.
Os procedimentos utilizados para desenvolver este documento, bem como aqueles utilizados para manutenção adicional estão descritos na Parte 1 da Diretiva ISO/IEC. Em particular, atenção deve ser dada aos diferentes critérios de aprovação exigidos para diferentes tipos de documentos ISO. Este documento foi elaborado de acordo com as regras editoriais da Parte 2 da Diretiva ISO/IEC (veja iso.org/directives).
ISO 11890-2-2020 “Tintas e vernizes – Determination of volatile organic compounds (VOC) contente – Papel 2- Gas chromatography”
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This document has been prepared by Technical Committee ISO/TC 35 (Paints and Varnishes) in cooperation with Technical Committee CEN/TC 139 (Paints and Varnishes) of the European Committee for Standardization (CEN) in accordance with the Technical Cooperation Agreement (Acordo de Viena) between ISO and CEN.
The fourth edition cancels and replaces the technically revised third edition (ISO 11890-2:2013).
ISO 11890-2-2020 “Tintas e vernizes – Determination of volatile organic compounds (VOC) contente – Papel 2- Gas chromatography”
Comparado com a edição anterior, As principais mudanças são as seguintes:
– The scope has been expanded to include the determination of semi-volatile organic compounds (SVOC);
— The range has been expanded to include concentrations ranging from 0.01% para 100%;
– Added specification for the determination of semi-volatile organic compounds.
Uma lista de todas as partes da ISO 11890 série pode ser encontrada no site da ISO.
Qualquer feedback ou dúvida sobre este documento deve ser direcionado ao órgão de padrões nacionais do usuário. Uma lista completa dessas agências pode ser encontrada em iso.org/members.html.
Introdução
This document is one of a series of standards dealing with the sampling and testing of coating materials and their raw materials. It provides a method for the determination of volatile organic compound (VOC) content and semi-volatile organic compound (SVOC) content of coating materials and their raw materials.
Advertências O uso deste documento pode envolver materiais perigosos, operações, e equipamentos. Este documento não se destina a abordar todas as questões de segurança associadas ao seu uso. It is the responsibility of the user of this document to take appropriate steps to ensure the safety and health of personnel before applying the document and to determine whether any other restrictions are applicable for this purpose.
ISO 11890-2-2020 “Tintas e vernizes – Determination of volatile organic compounds (VOC) contente – Papel 2- Gas chromatography”
1 Escopo
This document is suitable for the determination of VOC and/or SVOC with an expected VOC and SVOC content greater than 0.01 % (mass) para 100 %.
The method given in ISO 11890-1 is used when the VOC mass is greater than 15%. This document (method ISO 11890-2) is applicable when the system contains both VOC and SVOC, as the VOC results of ISO 11890-1 May be affected by SVOC. For VOC content of less than 0.1%, the headspace method described in ISO 17895 was used as an alternative. ISO 11890-1 e ISO 17895 cannot be used to determine SVOC content.
Observação 1 Certain components of coating materials and their raw materials can decompose and cause artificial VOC and/or SVOC signals during analysis. These signals are artifacts of the method and are not taken into account when determining the VOC and/or SVOC of coating materials and their raw materials (examples are given in Annex B).
This method assumes that the volatile matter is water or organic matter. No entanto, other volatile inorganic compounds may be present and may need to be quantified by another suitable method and allowed in the calculations. The methods defined in this document are not applicable to the determination of moisture content.
Observação 2 If organic acids or bases and their corresponding salts are present in the coating material or its raw materials, the amount quantified by this method may not be accurate due to changes in the acid or base balance.
ISO 11890-2-2020 “Tintas e vernizes – Determination of volatile organic compounds (VOC) contente – Papel 2- Gas chromatography”
2 referências normativas
Os documentos a seguir são referenciados no texto de forma que parte ou todo o seu conteúdo constitua os requisitos deste documento. Para referências datadas, apenas a versão citada se aplica. Para referências sem data, a nova versão da referência (incluindo quaisquer revisões) aplica-se.
ISO 760, Determination of moisture – Karl Fischer method (general method)
ISO 1513, Tintas e vernizes – Exame e preparação de amostras de teste
ISO 2811 (todas as partes), tintas e vernizes — Determination of density
ISO 15528, Tintas, vernizes e matérias-primas para tintas e vernizes – Amostragem
ISO 11890-2-2020 “Tintas e vernizes – Determination of volatile organic compounds (VOC) contente – Papel 2- Gas chromatography”
3 Termos e definições
Para efeitos deste documento, os seguintes termos e definições se aplicam.
ISO e IEC mantêm bancos de dados terminológicos para padronização nos seguintes endereços:
– Plataforma de navegação on-line ISO: disponível em iso.org/obp
– Enciclopédia Eletrônica IEC: disponível em electropedia.org/
3.1 Volatile Organic Compounds
Volatile organic compounds
Any organic liquid and/or solid that evaporates spontaneously at the prevailing temperature and pressure of the atmosphere with which it is in contact
Observação 1: For current usage of the term VOC in the field of coatings, see Volatile Organic Compound content (VOC content) (3.4).
Observação 2: Under U.S. government legislation, the term VOC is limited to those compounds that are photochemically active in the atmosphere (see ASTM D3960). Any other compound is then defined as an exempt compound (3.6).
[Fonte: ISO 4618:2014, 2.270]
3.2 Semi-volatile organic compounds
SVOC
Organic liquids and/or solids, spontaneously evaporate at the prevailing temperature and pressure of the atmosphere in contact with them, but more slowly than vocs
Observação 1: For current usage of the term SVOC in the field of coating materials, see semi-volatile Organic Compound Content (SVOC content) (3.5).
ISO 11890-2-2020 “Tintas e vernizes – Determination of volatile organic compounds (VOC) contente – Papel 2- Gas chromatography”
3.3 Non-volatile organic compounds
Non-vessel carrier
Organic liquids and/or solids not classified as VOC or SVOC
3.4 Volatile organic compound content
Volatile organic compound content
Volatile organic compounds
The quality of volatile organic compounds (3.1) present in the coating material as determined under the specified conditions
Observação 1: The nature and number of compounds to be considered will depend on the application area of the coating material. For each application area, limit values as well as determination or calculation methods are specified by regulation or agreement.
Observação 2: If the term VOC refers to a compound with a specified maximum boiling point, compounds considered as part of the VOC content are those whose boiling point is below and includes this limit, while compounds with higher boiling points are considered as semi-volatile or non-volatile organic compounds.
[Fonte: ISO 4618:2014, 2.271, modificado – entry note 2 added.]
3.5 Semi-volatile organic compound content
SVOC content
ISO 11890-2-2020 “Tintas e vernizes – Determination of volatile organic compounds (VOC) contente – Papel 2- Gas chromatography”
Svock
The quality of semi-volatile organic compounds (3.2) present in the coating material as determined under the specified conditions
Observação 1: The nature and number of compounds to be considered will depend on the application area of the coating material. For each application area, limit values as well as determination or calculation methods are specified by regulation or agreement.
Observação 2: If the term SVOC refers to compounds with specified maximum and minimum boiling points, compounds considered as part of the SVOC content are those with boiling points below and including upper and lower limits, and those with higher boiling points are considered as non-volatile organic compounds.
3.6 Exempted Compounds
Organic compounds that do not participate in atmospheric photochemical reactions
Observação 1: This expression is only relevant in certain countries/regions.
ISO 11890-2-2020 “Tintas e vernizes – Determination of volatile organic compounds (VOC) contente – Papel 2- Gas chromatography”
3.7 Readily Available
The state of the product, when the product is mixed in the correct proportions in accordance with the manufacturer’s instructions and diluted with the correct diluent as required in order to be ready for use by the approved method
3.8 Internal standard
Compounds not present in the sample, completely separated from the other components in the chromatogram, inert relative to the sample composition, stable over the desired temperature range and known purity, are added to the sample to control the dilution and injection steps of the analysis
3.9 Surrogacy standards
Compounds of known purity, used to quantify unidentified volatile organic compounds and SVOC
3.10 Labeled compounds
Compounds used to distinguish VOC from SVOC, or SVOC from NVOC (if required to be distinguished based on retention time) (3.11)
3.11 Retention time
tR
The time elapsed between the injection of sample components and the recording of peak maxima
3.12 Extraction solvent
Liquid used to extract volatile organic compounds and Svocs from the substrates under study
3.13 Main peak
A peak that makes a significant contribution to either side
– Volatile organic compound content, ou seja. ≥ 10% of the absolute volatile organic compound content (por exemplo. DEA equivalent) and ≥0.1% (por exemplo. DEA equivalent), ou
— SVOC content, aquilo é, ≥10% (DEA equivalent) and ≥0.1% mass (DEA equivalent) of absolute SVOC content
ISO 11890-2-2020 “Tintas e vernizes – Determination of volatile organic compounds (VOC) contente – Papel 2- Gas chromatography”
3.14 Secondary peak
Peak, with only a small contribution to either side
– Volatile organic compound content, ou seja. < 0.1% of mass (such as DEA equivalent) and/or < 10% of the absolute volatile organic compound content (such as DEA equivalent), ou
– SVOC content, namely < 0.1% by mass (DEA equivalent) and/or absolute SVOC content < 10% (DEA equivalent)
3.15 Reagents
Substances used for chemical/biochemical analysis or other reactions
[Fonte: ISO 20391-1:2018, 3.19]
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