本文選題：金礦區(qū)　切入點(diǎn)：光譜技術(shù)　出處：《光譜學(xué)與光譜分析》2017年05期 　論文類(lèi)型：期刊論文

【摘要】：礦區(qū)土壤環(huán)境問(wèn)題日益突出,以山東省煙臺(tái)市焦家式金礦區(qū)為典型區(qū),系統(tǒng)采集了85個(gè)表層土壤樣品進(jìn)行野外光譜實(shí)測(cè),其中35份用于重金屬鉻含量測(cè)定。利用光譜變換技術(shù)對(duì)原始光譜提取了一階微分、二階微分和去包絡(luò)線三種光譜指標(biāo),采用偏最小二乘回歸法建立光譜數(shù)據(jù)與鉻含量間的定量關(guān)系,將最優(yōu)預(yù)測(cè)模型應(yīng)用于其余50個(gè)樣本點(diǎn)鉻濃度值的獲取,最終通過(guò)克里金插值實(shí)現(xiàn)了對(duì)研究區(qū)土壤重金屬鉻的快速監(jiān)測(cè)。結(jié)果表明,基于一階微分?jǐn)?shù)據(jù)模型預(yù)測(cè)精度最高,其次為二階微分,原始光譜和去包絡(luò)線數(shù)據(jù)。研究區(qū)鉻的含量與金礦的分布情況密切相關(guān),即金礦密集區(qū)域鉻含量更高,這表明金礦開(kāi)采對(duì)土壤中鉻的含量與分布存在一定影響。
[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.
【作者單位】： 山東師范大學(xué)地理與環(huán)境學(xué)院;山東省地質(zhì)環(huán)境監(jiān)測(cè)總站;
【基金】：National Natural Science Foundation of China(41371395) Shandong Province Department of Land and Resources Project([2012]110,[2013]141)
【分類(lèi)號(hào)】：O657.3;X833

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本文編號(hào)：1568654