聚乙二醇快速澄清原子吸收分光光度法连续测定矿石中铜铅锌

Continuous Determination of Copper, Lead and Zinc in Ore Samples by Atomic Absorption Spectrophotometry with Polyethylene Glycol as a Rapid Clarifier

Nuclear Industry Xinjiang Testing Center for Physical and Chemical Analysis, Urumqi 830011, China

摘要: 利用聚乙二醇的水溶性和高聚合性，建立了原子吸收分光光度计连续快速测定矿石中的Cu、Pb、Zn的方法。矿石样品用HCl-HNO3-HClO4完全溶解，在均匀的试液中，选择聚乙二醇用量3mL，澄清时间仅2．5h，试液快速澄清。方法精密度（RSD，n=5）小于5％，加标回收率为86．3％-106．0％。方法用于测定岩石国家标准物质中的Cu、Pb和Zn，结果与标准值相符。
- 聚乙二醇 /
- 原子吸收分光光度法 /
- 试液 /
- 铜 /
- 铅 /
- 锌 /
- 矿石
Abstract: Based on the characteristics of water solubility and high polymerization of polyethylene glycol, a method for the continuous determination of copper, lead and zinc in ore samples by atomic absorption spectrophotometry after rapid clarification of the testing solution has been developed. The samples are completely dissolved with HCl-HNO3-HClO4. In the presence of 3 mL of polyethylene glycol, the testing solution is rapidly clarified within 2.5 h. The recoveries of the method for the elements are 86.3％~106.0% with precision of less than 5%RSD (n=5). The method has been applied to the determination of copper, lead and zinc in National Standard Reference rock samples and the results are in agreement with certified values.
- polyethylene /
- glycol /
- /
- atomic /
- absorption /
- spectrophotometry /