|本期目录/Table of Contents|

[1]李付兰,倪萍,郭华明,等.松嫩平原含水层沉积物特征及其对砷赋存态分布的影响[J].地球科学与环境学报,2015,37(01):101-110.
　LI Fu-lan,NI Ping,GUO Hua-ming,et al.Characteristics of Aquifer Sediments in Songnen Plain and Their Influences on Distribution of Arsenic Occurrence Modes[J].Journal of Earth Sciences and Environment,2015,37(01):101-110.
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松嫩平原含水层沉积物特征及其对砷赋存态分布的影响(PDF)
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第37卷
期数:
2015年第01期
页码:
101-110
栏目:
水资源与环境
出版日期:
2015-01-15

文章信息/Info

Title:
Characteristics of Aquifer Sediments in Songnen Plain and Their Influences on Distribution of Arsenic Occurrence Modes
文章编号:
1672-6561(2015)01-0101-10
作者:
李付兰; 倪萍; 郭华明; 曹永生; 张迪
1. 中国地质大学(北京)地下水循环与环境演化教育部重点实验室,北京 100083; 2. 中国地质大学(北京)水资源与环境学院,北京 100083
Author(s):
LI Fu-lan; NI Ping; GUO Hua-ming; CAO Yong-sheng; ZHANG Di
1. Key Laboratory of Groundwater Circulation and Evolution of Ministry of Education, China University of Geosciences, Beijing 100083, China; 2. School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China
关键词:
地下水; 砷; 沉积物; 赋存态; 粒度; 连续提取; 水力传导系数; 松嫩平原
Keywords:
groundwater;  arsenic;  sediment;  occurrence mode;  particle size;  sequential extraction;  hydraulic conductivity coefficient;  Songnen Plain
分类号:
P641.3
DOI:
-
文献标志码:
A
摘要:
松嫩平原西部地区为中国砷中毒区域,含水层沉积物特征及砷赋存态对地下水砷迁移、转化的影响并不清楚。在对研究区高砷区与低砷区钻孔沉积物进行取样的基础上,运用激光粒度分析、Tessier五步提取法和Keon分步提取法分别确定了不同深度沉积物的粒度分布和不同赋存态砷含量,系统研究了沉积物的水力传导系数、不同赋存态砷的分布及其与高砷地下水形成的关系。结果表明:沉积物5种赋存态砷(包括可交换态、碳酸盐吸附态、铁/锰氧化物吸附态、有机物或硫化物吸附态和基质态)中,铁/锰氧化物吸附态砷含量最高,并且砷含量与铁、锰含量呈明显正相关性;高砷区钻孔沉积物铁/锰氧化物吸附态砷质量分数为(1.18~6.11)×10-6,低砷区为(0.67~2.60)×10-6;高砷区钻孔沉积物以粉砂、黏土为主,水力传导系数介于0.004~0.027m·d-1,低砷区钻孔沉积物以细砂、中砂为主,水力传导系数介于0.005~0.2m·d-1;沉积物中粉砂或黏土含量越多,则沉积物颗粒越小,其水力传导系数越低,各赋存态砷含量越高,因此,高砷区低水力传导系数有利于还原环境的形成。通过地下水的循环,高砷含水层沉积物的淋滤作用和铁/锰氧化物的还原性溶解形成了研究区高砷地下水。
Abstract:
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参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2014-07-25
基金项目:国家自然科学基金项目(41222020,41172224);中国地质调查局地质大调查项目(1212010813104)
作者简介:李付兰(1993-),女,宁夏中卫人,工学硕士研究生,E-mail:cugb_lfl@163.com。
通讯作者:郭华明(1975-),男,江西乐安人,教授,博士研究生导师,工学博士,E-mail:hmguo@cugb.edu.cn。
更新日期/Last Update: 2015-02-04