前言
国际标准化组织 (国际标准化组织) 是国家标准机构的全球联盟 (ISO成员机构). 国际标准的制定通常通过ISO技术委员会进行. 每个对已成立技术委员会的主题感兴趣的成员机构都有权在该委员会中派代表参加. 与 ISO 联络的国际政府和非政府组织也参与了这项工作.

技术委员会通过的国际标准草案在被 ISO 理事会接受为国际标准之前，将分发给成员机构批准. They are approved under the ISO process, which requires at least 75 per cent approval from voting member bodies.

国际标准ISO 6503 was developed by the Technical Committee ISO/TC 35 用于油漆和清漆.

1 Scope and domain of application
This standard describes a flame atomic absorption spectrometry method for the determination of total lead in paints and related products.

This method is suitable for products with total lead content in the range of approximately 0.01 到 2% (毫米).

笔记 – This method is also suitable for products with total lead content greater than 2 % (毫米), but should only be used if the accuracy does not exceed the appropriate value given in 7.2.

Two methods to deal with the test part are given. 如有争议, the dry ash method (Clause 4) shall be used as the method of adjudication.

To determine lead in test solutions, the dithiazole spectrophotometry specified in ISO 3856/1 May be used as an alternative method.

国际标准化组织 6503-1984 “油漆和清漆 — 总铅含量的测定 — 火焰原子吸收光谱法”

2 参考资料
国际标准化组织 385/1, burette for laboratory glassware – 部分 1: 一般要求.

国际标准化组织 1042, Single label volumetric bottles for laboratory glassware.

国际标准化组织 1512, 油漆和清漆 — 采样.

国际标准化组织 1513, 油漆和清漆 — 测试样品的检查和制备.

国际标准化组织 3696, Laboratory water – 规格.

国际标准化组织 3856/1, 油漆和清漆 – 测定 “易溶” 金属含量 – 部分 1: 铅含量的测定 – Flame atomic absorption spectrometry and dithiazole spectrophotometry.

国际标准化组织 5725, Accuracy of test methods – Determination of repeatability and reproducibility by inter-laboratory testing.

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