贵族省红枫湖区域磷渣风化淋溶的环境地球化学研究

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	贵族省红枫湖区域磷渣风化淋溶的环境地球化学研究
	郜志清
	1993
学位授予单位	中国科学院地球化学研究所
学位授予地点	中国科学院地球化学研究所
学位名称	博士
关键词	红枫湖磷渣的风化淋溶环境地球化学
摘要	本文通过红枫湖区域岩石——磷渣系统的研究，获得如下认识：1.麻线河流域和红枫湖区域岩石的化学风化速率分别为1.180 * 10~(-2)和8.412 * 10~(-3)cm/yr；红枫湖区域岩石的化学风化系统在75%左右。2.岩石的化学风化速率随PH减小、温度升高和淋入液与样品量之比增大而增大；磷渣的风化淋溶降低岩石和溶解速率。3.磷石膏中元素的释放顺序为:K > Na > mg > Ca > Si，其淋出液呈碱性；硫铁矿渣中元素的释放顺序为：Mn > Ca > Mg > Na > K > Fe，它的淋出液呈酸性。4.磷石膏的风化淋溶液对石灰岩的溶蚀作用很弱，其中的钾、磷素进入土壤中，可提高土壤肥力；硫铁矿渣的风化淋溶液对石灰岩有一定的溶蚀性，其中有SO_4~(2-)，可带走大量钾素，会降低土壤肥力。
其他摘要	The rock-phosphor-residue (including sulfuric-acid-residue) system in the region of Hong Feng lake has been studied in the disertation, We recognized: 1. The chemical weathering rates of rocks in Ma Xian river drainage and the region of Hong Feng lake are 1.180 * 10~(-2) and 8.412 * 10~(-2)cm/yr respectively, and the coefficient of chemical weathering in the karst landscape of Hong Feng lake is about 75%. 2. The chemical weathering rate of calcite increases with the decrease of PH, the increase of temperature and the ratio of leaching agent to the amount of sample; The weathering and leaching of phosphor-residue decreases the dissolution rate of rocks. 3. The leachate of phosphor-residue in alkaline, its major elements are leached out as the following sequence: K > Na > Mg > Ca > Si; the leachate of sulfuric-acid-residue is acidic, its primary elements are carried out as the following order: Mn > Ca > Mg > Na > K > Fe. 4. The corrosive ability of phosphor-residue leachate to calcite is very weak, The Potassium and the Phosphorus from it is useful in increasing soil fertility; The leachate of sulfuric-acid-residue remains corrosive ability, takes away large amounts of Potassium, and is harmful to the soil environment.
页数	55
语种	中文
文献类型	学位论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/3912
专题	研究生_研究生_学位论文
推荐引用方式 GB/T 7714	郜志清. 贵族省红枫湖区域磷渣风化淋溶的环境地球化学研究[D]. 中国科学院地球化学研究所. 中国科学院地球化学研究所,1993.

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