摘要
坝口铜矿和长箐沟铜矿是峨眉山玄武岩型铜矿。利用3种光谱仪对卷叶丛本藓(Anoectangium thomso-niiMitt.)、酸土藓[Oxystegus cylindricus(Brid.)Hilp.]、硬叶扭口藓[Barbula rigidula(Hedw.)Mild.]和齿边异齿藓[Regmatodon serrulatus(Dozy et Molk.)Bosch et Lac.]及其基质中的Cu、Zn、Ca、Mg、Cd、Pb、Hg和As8种元素进行测定及分析,并计算出富集系数。结果表明,两铜矿Cu、Zn、Cd和Hg的背景值均超标,特别是Hg和Cu的平均含量分别是其标准值的10.28倍和2.33倍。长箐沟铜矿受Hg污染较重,坝口铜矿比长箐沟铜矿含Cu高。Cu-Cd、Zn-Ca、Ca-Pb和Hg-As均在0.05水平显著相关,Zn-Pb在0.01水平显著相关。Cu-Cd、Zn-Pb和Hg-As均产生协同效应。Zn-Ca和Ca-Pb均产生拮抗效应。富集系数有显著意义。4种藓类植物对Cu、Cd和Pb的吸收能力均是同一水平,可以作为指示植物,构成藓类植物组合来鉴别富集Cu、Cd和Pb的矿区。可利用卷叶丛本藓作为特征植物降低矿区As的污染。
The Bakou and Changqinggou copper mines are both Emeishan basalt-type copper deposits.The copper is located mainly in the top and the upper part of the Permian Emeishan basalt.By using a Analyst 800 atomic absorption spectrophotometer,AF-640 atomic fluorescence spectrophotometer,and Optima 5300 V inductively coupled plasma optical emission spectrophotometer,we analyzed the contents of eight elements （Cu,Zn,Ca,Mg,Cd,Pb,Hg,and As） in Anoectangium thomsonii Mitt.,Oxystegus cylindricus （Brid.） Hilp.,Barbula rigidula （Hedw.） Mild.,Regmatodon serrulatus （Dozy et Molk.） Bosch et Lac.,and corresponding substrates.The background values of Cu,Zn,Cd,and Hg exceeded the corresponding standard values.The background values of Hg and Cu were 10.28 and 2.33 times as high as the corresponding standard values,respectively.Mercury pollution in the Changqinggou Copper Mine is more severe,while Cu content in the Bakou Copper Mine is higher.Correlation analysis showed that correlation of Cu-Cd,Zn-Ca,Ca-Pb,and Hg-As were significant at the 0.05 level,while Zn-Pb was significant at the 0.01 level.The correlation of Cu-Cd,Zn-Pb,and Hg-As showed a synergistic effect,while Zn-Ca and Ca-Pb showed an antagonistic effect.The accumulation coefficients of elements were prominent.The four mosses are regarded as indicators because of their absorptive capacity belong to the same level for Cu,Cd,and Pb. The four mosses could be constituted a combination for examining the enrichment of Cu,Cd,and Pb in the mining area. The use of Anoectangium thomsonii Mitt. as a characteristic indicator could control arsenic contamination and reduce content of arsenic in the mining area.
出处
《武汉植物学研究》
CSCD
北大核心
2010年第2期186-190,共5页
Journal of Wuhan Botanical Research
基金
国家人力资源和社会保障部留学人员择优资助优秀项目[人社厅发(2008)86-2]
教育部中国高校优秀青年教师资助计划项目[教人司(2002)40]
贵州省优秀科技教育人才省长专项基金[黔科教(2003)04]
贵州师范大学博士科研启动基金
关键词
藓类植物
峨眉山玄武岩
富集系数
坝口铜矿
长箐沟铜矿
贵州
Mosses
Emeishan basalt
Accumulation coefficient
Bakou Copper Mine
Changqinggou Copper Mine
Guizhou
