湖南水口山多金属矿区废石堆重金属污染评价及赋存形态分析 Article Swipe

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Jiamu Chen , Zhihua Wu , Wenhao Liu , Xiaojun Zhang , Xiaoping Zhang , Linling Wang , Miao Zhou , Yutong Qi , Yunhui Wu ·

YOU? · · 2021 · Open Access · · DOI: https://doi.org/10.3799/dqkx.2021.019

摘要: 湖南水口山及周边是湖南省重金属污染较为严重的地区之一，龙王山金矿床是该区中部的一个重要金矿床.为调查该矿床废石堆污染状况、是否为周边环境的污染源、污染途径、重金属迁移能力和潜在的危害，对矿区FS17废石堆进行了自然淋滤水和24 m浅钻系统取样，开展重金属元素总量分析，利用单因子指数法和内梅罗综合污染指数法对其重金属污染程度进行污染评价，采用四步改良BCR提取法分析废石堆中8种重（类）金属元素（Pb、Zn、Cd、Cu、Cr、Ni、As和Fe）的赋存形态，并利用迁移指数量化废石堆重金属元素迁移能力；发现废石堆中Cd、Cu、Pb、As、Zn、Ni重金属元素严重超标，且在垂向上分布极不均匀；其自然淋滤水样中重金属元素Cd、Ni、Zn、Cu也严重超标；废石堆浅层重金属元素潜在迁移能力顺序为：Cd＞Ni≈Zn＞Cu＞Pb＞As＞Cr＞Fe，深层重金属元素迁移能力顺序为：Cd＞Zn＞Cu＞Ni＞Cr＞Pb＞As＞Fe，浅层重金属元素的迁移性大于深层；说明该废石堆重金属元素含量高，是周围环境重要污染源，酸性废水排放为其释放污染元素的主要途径；Cd、Cu、Zn、Ni迁移能力强，是周围环境的主要污染元素；Pb、Ni、As的迁移性在深层明显降低，可以通过埋深来削弱其迁移性，而Cr不会对周边环境产生污染. 关键词: 重金属元素 / 赋存形态 / 迁移性 / 污染源 / FS17废石堆 / 水口山矿区 / 环境地质

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Nuclear chemistry Zinc Chemistry Copper Nickel Materials science Metallurgy

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Type: article
Language: en
Landing Page: https://doi.org/10.3799/dqkx.2021.019
OA Status: diamond
Cited By: 2
References: 23
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OpenAlex ID: https://openalex.org/W4205105244

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DOI: https://doi.org/10.3799/dqkx.2021.019

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Title: 湖南水口山多金属矿区废石堆重金属污染评价及赋存形态分析

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Language: en

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Publication year: 2021

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Publication date: 2021-01-01

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Authors: Jiamu Chen, Zhihua Wu, Wenhao Liu, Xiaojun Zhang, Xiaoping Zhang, Linling Wang, Miao Zhou, Yutong Qi, Yunhui Wu

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Landing page: https://doi.org/10.3799/dqkx.2021.019

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Concepts: Nuclear chemistry, Zinc, Chemistry, Copper, Nickel, Materials science, Metallurgy

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Cited by: 2

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abstract_inverted_index.湖南水口山及周边是湖南省重金属污染较为严重的地区之一，龙王山金矿床是该区中部的一个重要金矿床.为调查该矿床废石堆污染状况、是否为周边环境的污染源、污染途径、重金属迁移能力和潜在的危害，对矿区FS17废石堆进行了自然淋滤水和24	1
abstract_inverted_index.m浅钻系统取样，开展重金属元素总量分析，利用单因子指数法和内梅罗综合污染指数法对其重金属污染程度进行污染评价，采用四步改良BCR提取法分析废石堆中8种重（类）金属元素（Pb、Zn、Cd、Cu、Cr、Ni、As和Fe）的赋存形态，并利用迁移指数量化废石堆重金属元素迁移能力；发现废石堆中Cd、Cu、Pb、As、Zn、Ni重金属元素严重超标，且在垂向上分布极不均匀；其自然淋滤水样中重金属元素Cd、Ni、Zn、Cu也严重超标；废石堆浅层重金属元素潜在迁移能力顺序为：Cd＞Ni≈Zn＞Cu＞Pb＞As＞Cr＞Fe，深层重金属元素迁移能力顺序为：Cd＞Zn＞Cu＞Ni＞Cr＞Pb＞As＞Fe，浅层重金属元素的迁移性大于深层；说明该废石堆重金属元素含量高，是周围环境重要污染源，酸性废水排放为其释放污染元素的主要途径；Cd、Cu、Zn、Ni迁移能力强，是周围环境的主要污染元素；Pb、Ni、As的迁移性在深层明显降低，可以通过埋深来削弱其迁移性，而Cr不会对周边环境产生污染.	2
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