山东省焦家式金矿区土壤重金属铬高光谱监测研究（英文）

发布时间：2018-03-05 04:07

本文选题：金矿区　切入点：光谱技术　出处：《光谱学与光谱分析》2017年05期 　论文类型：期刊论文

【摘要】：矿区土壤环境问题日益突出,以山东省烟台市焦家式金矿区为典型区,系统采集了85个表层土壤样品进行野外光谱实测,其中35份用于重金属铬含量测定。利用光谱变换技术对原始光谱提取了一阶微分、二阶微分和去包络线三种光谱指标,采用偏最小二乘回归法建立光谱数据与铬含量间的定量关系,将最优预测模型应用于其余50个样本点铬浓度值的获取,最终通过克里金插值实现了对研究区土壤重金属铬的快速监测。结果表明,基于一阶微分数据模型预测精度最高,其次为二阶微分,原始光谱和去包络线数据。研究区铬的含量与金矿的分布情况密切相关,即金矿密集区域铬含量更高,这表明金矿开采对土壤中铬的含量与分布存在一定影响。
[Abstract]:The problem of soil environment in mining area is becoming more and more serious. Taking Jiaojia-type gold deposit area of Yantai City, Shandong Province as a typical area, 85 surface soil samples were systematically collected for field spectral measurement. 35 of them were used for the determination of chromium content in heavy metals. The first order differential, second order differential and deenveloping lines were extracted from the original spectrum by spectral transformation technique. The partial least square regression method was used to establish the quantitative relationship between the spectral data and the chromium content. The optimal prediction model was applied to the determination of chromium concentration in the remaining 50 sample points. Finally, the rapid monitoring of heavy metal chromium in soil is realized by Kriging interpolation. The results show that the prediction accuracy based on the first order differential data model is the highest, followed by the second order differential model. The content of chromium in the study area is closely related to the distribution of gold, that is, the concentration of chromium in the concentrated area of gold deposit is higher, which indicates that gold mining has a certain influence on the content and distribution of chromium in the soil.
【作者单位】：山东师范大学地理与环境学院;山东省地质环境监测总站;
【基金】：National Natural Science Foundation of China(41371395) Shandong Province Department of Land and Resources Project([2012]110,[2013]141)
【分类号】：O657.3;X833

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