GB/T 3260.1-2024 in English

1. Standard scope and applicability

GB/T 3260.1—2024 is applicable to the determination of the content of copper, lead, zinc, cadmium, silver, nickel and cobalt in tin. The determination ranges of each element are: copper (Cu) 0.0001%~0.100%, lead (Pb) 0.0008%~0.050%, zinc (Zn) 0.0001%~0.0030%, cadmium (Cd) 0.0001%~0.0020%, silver (Ag), nickel (Ni) and cobalt (Co) are all 0.00008%~0.010%. This method has the characteristics of high sensitivity, good selectivity and simple operation.

2. Background of Standard Revision and Technological Evolution

This standard replaces GB/T 3260.1—2013, GB/T 3260.4—2013, GB/T 3260.8—2013 and GB/T 3260.10—2013. The main technical changes include:

• The determination range of some elements has been adjusted, such as copper has been extended from "0.00020%～0.100%" to "0.00010%～0.100%".
• The determination methods of silver, nickel and cobalt content have been added.
• The analytical process has been optimized, and the sample dissolution method and the determination acidity conditions have been improved.

These adjustments make the standard more scientific and applicable, and meet the development needs of modern detection technology.

3. Comparison of standard frameworks

4. Implementation Recommendations

Recommendations:In actual operations, reagents should be prepared in strict accordance with the requirements of the standard, and ensure that the instruments and equipment meet the characteristic concentration and stability indicators. For laboratories using this standard for the first time, it is recommended to conduct method validation to confirm its applicability.

In addition, since the standard involves a variety of hazardous chemicals (such as nitric acid, hydrochloric acid, etc.), operators must strictly abide by safety regulations, wear protective equipment, and ensure that the experimental environment is well ventilated.