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地理科学  2011 

塔克拉玛干沙漠腹地大气气溶胶中游离氧化铁的测定

, PP. 969-975

Keywords: 大气气溶胶,游离氧化铁,CBD,DRS

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Abstract:

大气沙尘气溶胶中铁氧化物含量的测定对研究气溶胶吸收特性有重要的研究意义。采用柠檬酸盐-重碳酸盐-连二亚硫酸盐(CBD)和漫反射光谱法(DRS)对塔克拉玛干沙漠腹地塔中站2006年4月9~11日沙尘暴天气过程前后TSP沙尘样品中的游离氧化铁进行定量和半定量研究,研究得出,塔中游离氧化铁占全铁含量的变化范围在4.55%~8.16%之间(平均值6.36%),全铁占样品总量的5.16%,游离氧化铁占样品总量的0.32%;反射光谱一阶导数曲线峰值在435和560nm对针铁矿和赤铁矿具有识别指示意义。

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