GB/T 21198.5-2007
AbolishedDetermination of precious metals in precious metals jewellery alloys using ICP spectrometry - Part 5: 999‰ silver jewellery alloys - Determination of silver - Difference method
贵金属合金首饰中贵金属含量的测定 ICP 光谱法 第5部分:999%银合金首饰 银含量的测定 差减法
Catalogue
前言 → 1 范围 → 2 方法原理 → 3 试剂材料 → 4 仪器 Foreword → 1 Scope → 2 Principle of method → 3 Reagents and materials → 4 Apparatus
Scope
This part of GB/T 21198 specifies a method for determining the silver content by measuring the impurity element content in 999‰ silver jewellery alloys. This part is applicable to silver jewellery alloys with a silver content of 999‰. Note: The jewellery may contain platinum, palladium, gold, bismuth, cadmium, cobalt, copper, iron, iridium, nickel, lead, rhodium, ruthenium, antimony, selenium, tin, tellurium, titanium and zinc.
GB/T 21198 的本部分规定了通过测定 999%银合金首饰中的杂质元素含量来确定银含量的方法。本部分适用于银含量为 999%的银合金首饰。注: 首饰中可含铂, 钯, 金, 铋, 镉, 钴, 铜, 铁, 铱, 镍, 铅, 铑, 钌, 锑, 硒, 锡, 碲, 钛和锌。
Keywords
Application Summary AI generated
Jewellery testing laboratories and manufacturers use this standard to determine the silver content in 999‰ silver alloy jewellery. By measuring impurity elements and applying the difference method, they accurately calculate the silver content, ensuring product purity compliance. This standard is critical for quality assurance and consumer protection in the precious metals jewellery industry.
珠宝检测机构和首饰制造商使用该标准来测定999%银合金首饰中的银含量。通过差减法计算杂质元素含量，从而准确得出银含量，确保产品符合纯度要求。该标准对于保证银首饰的质量和消费者权益至关重要。
AI Summary AI generated
This standard specifies a difference method using ICP spectrometry to determine the silver content in 999‰ silver jewellery alloys. The procedure involves dissolving the sample, precipitating silver with hydrochloric acid, filtering, measuring impurity elements, and calculating silver content by subtraction. It applies to 999‰ silver jewellery alloys and lists possible impurity elements. The standard details reagents, apparatus, and procedures to ensure accurate and reliable testing.
该标准规定了用ICP光谱法测定999%银合金首饰中银含量的差减法。通过溶解样品、沉淀银、过滤后测定杂质元素含量，再用差减法计算银含量。适用于银含量为999%的银合金首饰，涉及多种可能存在的杂质元素。标准详细列出了试剂、仪器和操作步骤，确保检测的准确性和可靠性。
Key Sentences extracted from text
GB/T 21198 的本部分规定了通过测定 999%银合金首饰中的杂质元素含量来确定银含量的方法。
称取贵金属首饰样品, 溶于硝酸,制备10 B/L 溶液。
加入盐酸将银沉淀,过滤分离氯化银。
用 ICP 光谱仪测定杂质含量, 用差减法确定银含量。
本部分适用于银含量为 999%的银合金首饰。
This part of GB/T 21198 specifies a method for determining the silver content by measuring the impurity element content in 999‰ silver jewellery alloys.
Weigh the precious metal jewellery sample, dissolve it in nitric acid, and prepare a 10 B/L solution.
Add hydrochloric acid to precipitate silver, filter and separate silver chloride.
Determine the impurity content using an ICP spectrometer, and determine the silver content by the difference method.
This part is applicable to silver jewellery alloys with a silver content of 999‰.