洪塘煤矿煤中微量和稀土元素的地球化学特征
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摘要
对洪塘煤矿乐平组主采煤层中微量元素和稀土元素的地球化学特征分析研究结果表明,煤中微量元素的平均含量高于中国煤的平均值,亦高于世界煤的平均值;与地壳的平均含量相比,煤中比较富集的元素有Ge、U、As。稀土元素含量为高于中国陆壳稀土元素总量均值和世界煤中稀土元素总量均值,低于中国煤中稀土元素总量均值;稀土元素分布模式基本一致,均呈左高右低的宽缓"V"型曲线。
The trace and rare earth elements geochemistry of coal seam of Leping Formation in Hongtang coal mine are analyzed in this paper.Research shows that firstly,Ga,U,Cl,F,As,Th.trace elements have higher content compared with average data of China;the average content of Ga,U,F As and Th is higher than that in the world coal;Ge,U and As are obviously richer than the average content of the earth's crust.The content of rare earth elements is higher than the mean value of total rare earth elements in China's upper continental crust and world coal,and lower than the mean value of total rare earth elements in Chinese coal;The distribution patterns of REE are basically the same,showing a broad "V" curve with left high right low,LREE is obviously enriched,and HREE is relatively depleted,Negative anomalies at Eu indicate that the main source of land is clastic sediments during coal forming,REE are mainly found in minerals.
The trace and rare earth elements geochemistry of coal seam of Leping Formation in Hongtang coal mine are analyzed in this paper.Research shows that firstly,Ga,U,Cl,F,As,Th.trace elements have higher content compared with average data of China;the average content of Ga,U,F As and Th is higher than that in the world coal;Ge,U and As are obviously richer than the average content of the earth's crust.The content of rare earth elements is higher than the mean value of total rare earth elements in China's upper continental crust and world coal,and lower than the mean value of total rare earth elements in Chinese coal;The distribution patterns of REE are basically the same,showing a broad "V" curve with left high right low,LREE is obviously enriched,and HREE is relatively depleted,Negative anomalies at Eu indicate that the main source of land is clastic sediments during coal forming,REE are mainly found in minerals.
引文
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[15]王西勃,李丹,逯雁峰,等.重庆长河碥矿煤的微量元素地球化学特征[J].煤田地质与勘探,2007,35(3):4-9.
[16]Ketris M P,Yudovich Y E.Estimations of Clarkes for carbonaceous biolithes:world average for trace element contents in black shales and coals[J].International Journal of Coal Geology,2009,78:135-148.
[17]Dai S F,Ren D Y,Chou C L,et al.Geochemistry of traceelemets in Chinese coals:a review of abundances,genetic types,impacts on human health,and industrial utilization[J].International Journal of Coal Geology,2012,94:3-21.
[2]代世峰,任德贻,李生盛,等.华北地台晚古生代煤中微量元素及As的分布[J].中国矿业大学学报,2003,32(2):111-114.
[3]武子玉,李云辉,周永昶.吉林白山地区原煤微量元素地球化学特征[J].煤田地质与勘探,2004,32(6):8-10.
[4]杨磊,刘池洋,李洪英.陈家山矿煤中微量元素和稀土元素地球化学特征[J].煤田地质与勘探,2008,36(2):10-14.
[5]胡小娟,黄懿,涂玮,等.梅山矿区不同煤层中为了元素的分布及赋存特征[J].煤炭工程,2016,48(11):111-114.
[6]刘东娜,赵峰华,周安朝,等.大同煤田七峰山矿2号煤层若干微量元素地球化学特征[J].煤炭学报,2013,38(4):637-643.
[7]陆佳佳,陈萍,刘震等.基于数理统计分析的淮南煤中微量元素的研究[J].煤炭技术,2014,33(5):296-298.
[8]白向飞,王越.平朔矿区煤中矿物分布及赋存特征研究[J].煤炭科学技术,2013,41(7):118-122.
[9]任德贻,赵峰华,等.煤的微量元素地球化学[M].北京:科学出版社,2006.
[10]赵继尧,唐修义,黄文辉.中国煤中微量元素的丰度[J].中国煤田地质,2002,14(增刊):5-13.
[11]Swaine D J.Trace elements in coal[M].Butterworths,London:1990.
[12]Valkovic V.Taace Elements in Coal[M].Boca Raton,CRC Press:1983.
[13]黎彤.中国陆壳及沉积层和上陆壳的化学元素丰度[J].地球化学,1994,23(2):140-145.
[14]邹建华,刘东,田和明等.内蒙古阿刀亥矿晚古生代煤的微量元素和稀土元素地球化学特征[J].煤炭学报,2013,38(6):1012-1018.
[15]王西勃,李丹,逯雁峰,等.重庆长河碥矿煤的微量元素地球化学特征[J].煤田地质与勘探,2007,35(3):4-9.
[16]Ketris M P,Yudovich Y E.Estimations of Clarkes for carbonaceous biolithes:world average for trace element contents in black shales and coals[J].International Journal of Coal Geology,2009,78:135-148.
[17]Dai S F,Ren D Y,Chou C L,et al.Geochemistry of traceelemets in Chinese coals:a review of abundances,genetic types,impacts on human health,and industrial utilization[J].International Journal of Coal Geology,2012,94:3-21.