Jewellery — Determination of silver in silver jewellery alloys — Volumetric (potentiometric) method using sodium chloride or potassium chloride
首饰 - 银首饰合金中银的测定 - 使用氯化钠或氯化钾的体积(电位)方法
发布日期:
2015-01-20
ISO 13756:2015规定了测定银珠宝合金中银的容量法,最好在ISO 9202规定的细度范围内。这些合金可能含有铜、锌、镉和钯。钯必须在开始滴定前沉淀,除此之外,这些元素不会干扰该测定方法。
注:该方法是ISO 11427推荐的替代方法。
ISO 13756:2015 specifies a volumetric method for the determination of silver in silver jewellery alloys, preferably within the range of fineness stated in ISO 9202. These alloys may contain copper, zinc, cadmium, and palladium. Apart from palladium, which must be precipitated before commencing titration, these elements do not interfere with this method of determination.
NOTE This method is an alternative recommended method to ISO 11427.