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同位素地质年代学研究深入发展,对同位素年龄测试方法和技术的要求愈来愈高。氩同位素稀释法(简称稀释法)则具有灵敏度高、精度高、用样量少等优越性。尤其对于低钾量和非常年青的年龄样品,当前是最有效的测试方法。我们在学习国内外实验室经验的基础上,结合我所具体条件,建立起氩同位素稀释法测定年龄方法,设计一套具有自已特色的稀释剂制备、分样、标定和析氩装置,实验结果,对十几亿至几十万年的各种样品均获得比较满意的结果。
Isotopic geochronology has been developed in depth and has become increasingly demanding on isotope age testing methods and techniques. Argon isotope dilution method (referred to as the dilution method) has the advantages of high sensitivity, high precision, sample size and other advantages. Especially for low-potassium and very young age samples, the current is the most effective test method. Based on our experience in laboratories both at home and abroad, and based on our specific conditions, we set up an argon isotope dilution method for the determination of age and design a set of diluent preparation, sampling, calibration and argon removal equipment with its own characteristics. The experimental results , For a hundred million to hundreds of thousands of years of various samples have been more satisfactory results.