地理学报

地理学报 ›› 1979, Vol. 46 ›› Issue (1): 12-17.doi: 10.11821/xb197901002

• 论文 • 上一篇    下一篇

珠穆朗玛峰高海拔地区冰雪中的微量元素

章申   

  1. 中国科学院地理研究所化学地理室
  • 出版日期:1979-01-15 发布日期:1979-01-15

CONTENT OF TRACE ELEMENTS IN GLACIAL ICE AND SNOW IN THE MT. QOMOLANGMA REGION

Zhang Shen   

  1. Department of Chemical Geography, Institute ofGeography, Academia Sinina
  • Online:1979-01-15 Published:1979-01-15

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摘要： 珠穆朗玛峰(以下称“珠峰”)高海拔地区冰雪中微量元素的研究是1966—1968年珠峰地区表生地球化学和化学地理研究工作的继续。本文旨在通过对地表高海拔地区降水和冰雪覆盖中微量元素的地球化学研究,来阐明远离工业污染地区大气降水中微量元素的含量和分布特征。通过与南北极冰原地区的冰雪和大气气溶胶化学成分的对比分析,来探讨珠峰高海拔地区的大气质量,并追溯这些微量元素的来源。

关键词: 高海拔地区, 珠峰地区, 珠穆朗玛峰地区, 中微量元素, 大气气溶胶, 富集系数, 南北极, 大气降水, 南极冰雪, 化学地理

Abstract: On the northern slopes of Mt. Qomolangma samples of ice and snow were collected at altitudes of 7,050-7,846 m. The trace elements in ice and snow samples were determined by neutron activation analysis in the Institute of High Energy Physics, Academia Sinica. The data obtained indicate that variation in the vertical distribution of trace elements in the ice-snow profiles does not differentiate greatly. The contents of Hg, Cu and Sb in glacial ice and snow collected in the nit. Qomolangma region are in agreement with those of the metals in snows of the Antarctics and Greenland. The contents of As and Cr in our samples are greater than those in ice and snow of the Antarctics. The zine content is high up to 0.42 ppm as comparable with that in precipitation in the USA. The order of enrichment factor valtues of trace elements (Cu, As, Cr, Sb and Hg) is similar to that of the Antarctics with the exception of zinc. There are probably natural sources for these trace elements, such as crustal weathering, volcanic eruption etc. yet the high enrichment factor may be due to some anthropogenic sources.