| 珲春河流域砂金中微量铅同位素组成及其来源 |
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| 引用本文：王铁夫,周燕,咸嘉泉,张延洁.2004.珲春河流域砂金中微量铅同位素组成及其来源[J].地球学报,25(2):141-143. |
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| 中文摘要:砂金中的微量铅同位素分析具有特殊的意义。可根据Pb同位素的μ、v、ω等值确定砂金的来源及可能的原生金矿体，本文测试了珲春河流域中的砂金及附近岩石和矿物Pb同位素，为寻找原始金矿和岩体提供了极其重要的同位素地质依据。砂金中铅的化学分离是采用阴阳离子交换技术，以甲醇作为载体进行砂金中微量铅的富集、分离纯化，使铅与金彻底分离，以达到高精度和准确的铅同位素测定。 |
| 中文关键词:砂金 阴阳离子交换 铅同位素 |
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| Lead Isotope Composition and Sources of Trace Lead in Placer Gold of the Hunchun River Valley |
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| Abstract:The isotope analysis of trace lead in placer gold has special meaning. From μ,υ and ω of the lead isotopes,the sources of the placer gold and the original deposit can be found. The lead isotope analysis of placer gold as well as rocks and minerals nearby in the Hunchun River Valley is very important in searching for gold deposits and collecting basic geological data in that area. The separation and enrichment of Pb are carried out by means of anion and cation exchange resin. In this way Pb can be separated from Au and its isotopes can be determined accurately. |
| keywords:placer gold anion-cation exchange lead isotope |
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