GB/T 21198.4-2007
AbolishedDetermination of precious metals in precious metals jewellery alloys - Method using ICP spectrometry - Part 4: 999‰ precious metals jewellery alloys - Determination of precious metals - Difference method
贵金属合金首饰中贵金属含量的测定 ICP 光谱法 第4部分:999%贵金属合金首饰 贵金属含量的测定 差减法
Catalogue
前言 → 1 范围 → 2 方法原理 → 3 试剂材料 → 4 仪器 → 附录A Foreword → 1 Scope → 2 Principle of method → 3 Reagents and materials → 4 Apparatus → Annex A
Scope
This part of GB/T 21198 specifies the method for determining the platinum content in platinum alloy jewellery, the palladium content in palladium alloy jewellery, and the gold content in gold alloy jewellery by measuring the impurity element content in 999‰ precious metal alloy jewellery. This part is applicable to precious metal alloy jewellery with a content of 999‰. Note: The jewellery may contain platinum, palladium, gold, silver, bismuth, cadmium, cobalt, copper, iron, iridium, nickel, lead, rhodium, ruthenium, tin, titanium and zinc.
GB/T 21198 的本部分规定了通过测定 999‰的贵金属合金首饰中的杂质元素含量来确定铂合金首饰中的铂含量 ,钯合金首饰中的钯含量,金合金首饰中的金含量的方祛。本部分适用于含量为 999‰的贵金属合金首饰。注: 首饰中可含铂 ,钯 .金 .银 .铋 ,镉 ,钴 ,铜 .铁 ,铱 .镍 ,铅 ,铑 ,钌 ,锡 .钛和锌。
Keywords
Application Summary AI generated
Jewelry testing laboratories and manufacturers use this standard to determine the content of platinum, palladium, and gold in high-purity (999‰) precious metal jewellery. It calculates the total impurity elements by difference method to ascertain the main precious metal purity. This standard ensures quality control and fair trade of high-purity precious metal jewellery.
珠宝检测机构和首饰生产企业使用该标准来测定高纯度（999‰）贵金属首饰中铂、钯、金的含量。通过差减法计算杂质元素总量，从而确定主贵金属的纯度。该标准确保了高纯度贵金属首饰的质量控制和贸易公平。
AI Summary AI generated
GB/T 21198.4-2007 specifies the difference method using ICP spectrometry for determining platinum, palladium, and gold content in 999‰ precious metal alloy jewellery. The method involves dissolving the sample in aqua regia, measuring impurity elements, and calculating the main precious metal content by difference. It applies to platinum, palladium, and gold alloy jewellery, requiring high-resolution ICP spectrometer and microbalance. Proposed by China National Light Industry Council, centralized by SAC/TC 256, drafted by National Jewelry Quality Supervision and Inspection Center, implemented on July 1, 2008.
GB/T 21198.4-2007规定了用ICP光谱法测定999‰贵金属合金首饰中铂、钯、金含量的差减法。该方法通过王水溶解样品，测定杂质元素含量，再用差减法计算主贵金属含量。标准适用于铂、钯、金合金首饰，要求使用高分辨率ICP光谱仪和微量天平。该部分由中国轻工业联合会提出，全国首饰标准化技术委员会归口，国家首饰质量监督检验中心起草，于2008年7月1日实施。
Key Sentences extracted from text
GB/T 21198 的本部分规定了通过测定 999‰的贵金属合金首饰中的杂质元素含量来确定铂合金首饰中的铂含量 ,钯合金首饰中的钯含量,金合金首饰中的金含量的方祛。
称取贵金属合金样品 ,溶于王水,制备10 B/L 溶液。
用 ICP 光谱仪测定杂质含量 ,用差碱法确定贵金属含量。
电感耦合等离子体发射光谱仪 (ICP 光谱仪) :具有固定或扫描通逍 .相关元慕的光学分辨率为0.02 nm, 检测限不低于0.05 mg/L , 具背景校正功能。
微量天平:感量为0.01 mg。
This part of GB/T 21198 specifies the method for determining the platinum content in platinum alloy jewellery, the palladium content in palladium alloy jewellery, and the gold content in gold alloy jewellery by measuring the impurity element content in 999‰ precious metal alloy jewellery.
Weigh the precious metal alloy sample, dissolve it in aqua regia, and prepare a 10 mg/L solution.
Determine the impurity content using an ICP spectrometer, and determine the precious metal content by the difference method.
Inductively coupled plasma emission spectrometer (ICP spectrometer): with fixed or scanning channels, optical resolution of 0.02 nm for relevant elements, detection limit not lower than 0.05 mg/L, with background correction function.
Microbalance: sensitivity of 0.01 mg.