绿色化学法在金矿地质样品分析中的应用研究
|
摘要
为满足黄金矿山生产与综合研究的需要,针对化学污染的严峻形势,研究建立了HCl-HNO3-NH4HF2-KCl O3封闭溶矿和Na2O2-KOH高温熔融分解体系,采用原子吸收光谱法(FAAS与GF-AAS)和电感耦合等离子体光谱法(ICP-OES)等联合测定了金矿地质样品中Au、Ag、Cu、Pb、Zn、As、Sb、Si O2、Fe2O3、Al2O3、Ca O和Mg O等18种主次量元素和化合物含量。绿色化学法操作简便,较好地解决了传统敞口王水和混酸分解体系试剂利用率低、环境污染程度高及反应过程不易控制等问题;Na2O2与KOH的配合可加快熔矿进程,还能在一定程度上抵消大量熔质导致的基体干扰;硫脲介质使高品位Ag的精密度(RSD)达1.09%,一般成矿元素加标回收率为96%~107%。
In order to meet the needs of gold mine production and comprehensive research,and according to the serious situation of chemical contamination,the HCl-HNO3-NH4HF2-KCl O3 sealed vessel and Na2O2-KOH decomposition of high temperature melting system were established in this study.The Au,Ag,Cu,Pb,Zn,As,Sb,Si O2,Fe2O3,Al2O3,Ca O,Mg O and other 18 kinds of main,trace elements were determinated by atomic absorption spectrometry(FAAS and GF-AAS)and inductively coupled plasma spectrometry(ICP-OES)combined in geological samples.Green chemistry method is simple and it overcomes the problems such as low efficiency of the traditional exposure reagent aqua regia and mixed acid decomposition system utilization,serious environmental pollution,difficult to control the reaction process;Na2O2combined with KOH can promote the process of ore melting,also will have a certain degree of offset matrix interference,precision(RSD)of the high grade Ag was up to 1.09% in thiourea medium,and chemical yield of the general metallogenic element was around 96%~107%.
In order to meet the needs of gold mine production and comprehensive research,and according to the serious situation of chemical contamination,the HCl-HNO3-NH4HF2-KCl O3 sealed vessel and Na2O2-KOH decomposition of high temperature melting system were established in this study.The Au,Ag,Cu,Pb,Zn,As,Sb,Si O2,Fe2O3,Al2O3,Ca O,Mg O and other 18 kinds of main,trace elements were determinated by atomic absorption spectrometry(FAAS and GF-AAS)and inductively coupled plasma spectrometry(ICP-OES)combined in geological samples.Green chemistry method is simple and it overcomes the problems such as low efficiency of the traditional exposure reagent aqua regia and mixed acid decomposition system utilization,serious environmental pollution,difficult to control the reaction process;Na2O2combined with KOH can promote the process of ore melting,also will have a certain degree of offset matrix interference,precision(RSD)of the high grade Ag was up to 1.09% in thiourea medium,and chemical yield of the general metallogenic element was around 96%~107%.
引文
[1]朱清时.绿色化学与可持续发展[J].中国科学院院刊,1997,(6):415-420.
[2]闵恩泽,傅军.绿色化学的进展[J].化学通报,1999,(1):10-15.
[3]朱明乔,谢方友,吴廷华.绿色化学与技术在化学工业中的应用[J].化工生产与技术,2002,9(4):27-30.
[4]许峰,王煤,李敏杰.绿色化学与有机合成[J].化学与生物工程,2005,(5):7-8,11.
[5]熊蓉春,董雪玲,魏刚.绿色化学与21世纪水处理剂发展战略[J].环境工程,2004,18(2):22-24.
[6]张懿,李佐虎,王志宽,等[.J].绿色化学与铬盐工业的新一代产业革命[J].化学进展,1998,10(2):172-178.
[7]王静康,龚俊波,鲍颖.21世纪中国绿色化学与化工发展的思考[J].化工学报,2004,55(12):1944-1949.
[8]闫立峰.绿色化学[M].安徽:中国科学技术大学出版社,2007:1-48.
[9]赵博,张德会,于蕾,等.从克拉克值到元素的地球化学性质或行为再到成矿作用[J].矿物岩石地球化学通报,2014,33(2):252-261.
[10]《岩石矿物分析》编委会.岩石矿物分析[M].第四版.北京:地质出版社,2011:17-88.
[11]薛光,任文生,薛元昕.金银湿法冶金及分析测试方法[M].北京:科学出版社,2009:1-3,708-720.
[12]邱宏喜,王志杰,王达成,等.封闭溶样-AAS法测定特高品位矿石中的金银[J].黄金,2014,35(3):80-84.
[13]付桂花,邱宏喜,刘玖芬,等.含可见金地质样品加工流程研究[J].黄金,2012,33(7):55-59.
[14]薛光,姚万林,刘永生,等.封闭溶样—硫脲介质原子吸收法测定矿石中的银[J].黄金,2000,21(5):46-48.
[15]刘玖芬,刘自娟.用火焰原子吸收法测定金精矿中高含量的银[J].黄金地质,2003,9(4):55-57.
[16]邓勃,何华琨.原子吸收光谱分析[M].北京:化学工业出版社,2004.
[17]章慧.配位化学原理与应用[M].北京:化学工业出版社,2008:25-33.
[18]席永清,邱海鸥,李金莲,等.电感耦合等离子体原子发射光谱法同时测定地质样品中的Zr、Hf、Sc、Th[J].分析试验室,2005,24(9):40-43.
[19]朱金荣,宫明岗.电感耦合等离子体发射光谱法测定锂辉矿中的主次痕量元素[J].岩矿测试,1995,14(3):180-184.
[20]张宁,刘海波,方曾坤.电感耦合等离子体发射光谱法测定锌精矿中的二氧化硅[J].岩矿测试,2011,30(3):325-327.
[21]庞晋山,黄刚,邓爱华,等.电感耦合等离子体发射光谱分析中易电离元素的基体干扰及其抑制的研究[J].理化检验:化学分册,2012,48(6):671-677.
[2]闵恩泽,傅军.绿色化学的进展[J].化学通报,1999,(1):10-15.
[3]朱明乔,谢方友,吴廷华.绿色化学与技术在化学工业中的应用[J].化工生产与技术,2002,9(4):27-30.
[4]许峰,王煤,李敏杰.绿色化学与有机合成[J].化学与生物工程,2005,(5):7-8,11.
[5]熊蓉春,董雪玲,魏刚.绿色化学与21世纪水处理剂发展战略[J].环境工程,2004,18(2):22-24.
[6]张懿,李佐虎,王志宽,等[.J].绿色化学与铬盐工业的新一代产业革命[J].化学进展,1998,10(2):172-178.
[7]王静康,龚俊波,鲍颖.21世纪中国绿色化学与化工发展的思考[J].化工学报,2004,55(12):1944-1949.
[8]闫立峰.绿色化学[M].安徽:中国科学技术大学出版社,2007:1-48.
[9]赵博,张德会,于蕾,等.从克拉克值到元素的地球化学性质或行为再到成矿作用[J].矿物岩石地球化学通报,2014,33(2):252-261.
[10]《岩石矿物分析》编委会.岩石矿物分析[M].第四版.北京:地质出版社,2011:17-88.
[11]薛光,任文生,薛元昕.金银湿法冶金及分析测试方法[M].北京:科学出版社,2009:1-3,708-720.
[12]邱宏喜,王志杰,王达成,等.封闭溶样-AAS法测定特高品位矿石中的金银[J].黄金,2014,35(3):80-84.
[13]付桂花,邱宏喜,刘玖芬,等.含可见金地质样品加工流程研究[J].黄金,2012,33(7):55-59.
[14]薛光,姚万林,刘永生,等.封闭溶样—硫脲介质原子吸收法测定矿石中的银[J].黄金,2000,21(5):46-48.
[15]刘玖芬,刘自娟.用火焰原子吸收法测定金精矿中高含量的银[J].黄金地质,2003,9(4):55-57.
[16]邓勃,何华琨.原子吸收光谱分析[M].北京:化学工业出版社,2004.
[17]章慧.配位化学原理与应用[M].北京:化学工业出版社,2008:25-33.
[18]席永清,邱海鸥,李金莲,等.电感耦合等离子体原子发射光谱法同时测定地质样品中的Zr、Hf、Sc、Th[J].分析试验室,2005,24(9):40-43.
[19]朱金荣,宫明岗.电感耦合等离子体发射光谱法测定锂辉矿中的主次痕量元素[J].岩矿测试,1995,14(3):180-184.
[20]张宁,刘海波,方曾坤.电感耦合等离子体发射光谱法测定锌精矿中的二氧化硅[J].岩矿测试,2011,30(3):325-327.
[21]庞晋山,黄刚,邓爱华,等.电感耦合等离子体发射光谱分析中易电离元素的基体干扰及其抑制的研究[J].理化检验:化学分册,2012,48(6):671-677.