摘要
为了调查军事训练场地重武器炮弹靶场表层土壤重金属污染特征及其潜在生态风险状况,本文以西藏某军事训练场重武器炮弹着落靶区的表层土壤为研究对象,测试分析了(0—20 cm)30件土壤样品中的As、Cd、Hg、Pb、Ni、Cu、Zn等重金属元素.通过空白对照研究和相关数理统计分析,开展炮弹靶场土壤重金属含量、污染风险等级评价、污染源分析和生态风险评价研究.结果表明,该重武器炮弹靶场土壤的重金属元素As和Cu含量显著高于地区土壤背景值.靶场重金属As和Cu达到中度-显著污染,其余重金属元素为无-弱污染,部分样品重金属As、Cd、Cu超过风险值.结合区内土壤重金属背景含量和人为长期的军事活动分析,判断土壤Cd污染主要源于较高的土壤自然背景,As和Cu污染源于靶场炮弹射击人为源.区内土壤重金属生态风险等级以轻微潜在生态风险为主,仅Hg、As、Cd部分样品存在中等风险.
The article has investigated the characteristics and potential ecological risks of heavy metal pollution in the surface soil of the artillery projectile range in the heavy weapons military training field by analyzing heavy metal(As,Cd,Hg,Pb,Ni,Cu and Zn)content in 30 surface soil samples(0–20 cm)collected from a heavy weapons training field in Tibet.By the blank control study and related mathematical statistics analysis,the content of heavy metals in the soil and the corresponding crisis grade were evaluated.The results showed that the content of As and Cu in the soil of the artillery heavy weapons projectile range was Indigenous higher than that of the original soil background.As and Cu in the shooting range reached moderate to obvious indigenous pollution,and the heavy metals were non-weak pollution.As,Cd and Cu in some samples exceeded the risk value.Combined with the soil background and human activities in the area,it was judged that the soil Cd pollution was mainly due to the high natural background,and As and Cu pollution sources were from the shooting source of the projectile in the shooting range.
作者
王亮
李宏伟
李昂泽
邓俊峰
WANG Liang;LI Hongwei;LI Angze;DENG Junfeng(CGS Military-civilian Integrated Geological Survey Center,Chengdu,610036,China)
出处
《环境化学》
CAS
CSCD
北大核心
2022年第8期2646-2654,共9页
Environmental Chemistry
基金
《西藏羊八井高原高寒综合训练场应用地质综合调查》(DD20211582)资助。
关键词
军事训练场
重金属污染
生态风险
military training ground
heavy metal pollution
ecological risks
