铁质宇宙尘中的有机分子的发现  

DISCOVERY OF ORGANIC MOLECULE IN IRON COSMIC DUST

作　　者：彭汉昌[1] 徐培苍[2] 

机构地区：[1]国家海洋局第一海洋研究所,青岛266003 [2]中国地质科学院西安地质矿产研究所,西安710054

出　　处：《海洋与湖沼》1995年第5期509-513,共5页Oceanologia Et Limnologia Sinica

基　　金：国家自然科学基金!49176263

摘　　要：于1983年5－7月，利用向阳红16号考察船在太平洋7—11°N，167－178°W海域进行锰结核调查，从深海沉积物中分离出大量字苗尘（或称宇宙球粒）。此后对宇宙尘进行了全面研究，取得一定进展。最近，又利用激光拉曼分子探针测定了铁质宇宙尘中的分子组成。结果表明，铁质字宙尘中除了含有Fe－Fe，Fe3＋O，Fe－Ni，Al－O，Fe－Obr－Si和Si-Onb分子外，还含有较丰富的C－H－O和C－H－S－O有机分子，无定形碳C=C和C=C，CH2，CH3和挥发分子CO2，H2O，OH－，H2S，SO2等。这些成份与刍星尘埃的分子成分相一致。这一结果对于深入研究行星际尘埃微粒的起源以及探索生命物质的起源都具有重要意义。In May to July,1983, a great quantity of cosmic dusts (spherules) were obta-ined from the deep-sea sediments during manganese nodule invesigation by R/V'Xiangyanghong No.16' in the area 7°-11°N, 167°-178°W in the Pqcific. Later,comprehensive studies of the cosmic dusts and use of Laser Raman Molecular Micro-probe (LRMM) to determined composition of the molecules in the iron cosmic dustsshowed that besides molecules of Fe-Fe, Fe3+-O, Fe-Ni, Al-O, Fe-Obr-Si and Si-Onb, the iron cosmic dusts also contained ntained the organic molecule of C-H-Oand C-H-S-O, various nonfixiform molecules of C, CH2, CH3 and volatile mole-cules Co2, H2O, OH- and H2S etc.These molecular compositions are similar to thatfor cometary dust.This result is very important for exploring the origin of interplanetary dust pa-rticles and life material.

关 键 词：铁质宇宙尘 有机分子 激光喇曼光谱 

分 类 号：P185.9[天文地球—天文学]