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近年来对宇宙尘的研究已成为宇宙化学和天文地质学界中的一个很活跃的领域。作者利用中子活化法测定了从深海沉积物中挑选出的硅质和玻璃质小球中的微量元素的含量。结果表明,这些硅质和玻璃质小球主要属地外来的物质。
In recent years, the study of cosmic dust has become a very active field in cosmochemistry and astronomy. The authors used neutron activation to determine the trace elements in siliceous and vitreous spheres selected from deep sea sediments. The results show that these siliceous and glassy spheres are mainly foreign matter.