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冰川冻土  2002 

乌鲁木齐河源区水体和大气气溶胶化学成分研究

, PP. 186-191

Keywords: 乌鲁木齐河源区,气溶胶,大气降水,径流

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Abstract:

对天山乌鲁木齐河源区采集的大气气溶胶、大气降水、积雪和径流样品中的主要离子(Cl-,NO3-,SO42-,Ca2+,Mg2+,Na+,K+,NH4+,其中降水中未测定NH4+)的测定结果进行分析和讨论.结果表明,所测阳离子当量浓度总和为所测阴离子当量浓度总和的2~8倍,认为缺失阴离子主要为HCO3-,因此,HCO3-,Ca2+是各种水体及气溶胶的主导阴、阳离子.在采样时段各种水体中的离子浓度顺序为乌鲁木齐河源1号冰川径流>总控径流>空冰斗径流>降水>积雪,积雪和降水样品的pH值接近中性,径流样品明显偏碱性.通过比较不同水体中的离子浓度,了解到干、湿沉积、积雪淋溶对不同水体中离子浓度的改变及影响

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