原子吸收光谱分析仪简介
2023-04-22
来源:步旅网
第2期 physics。200 l,23(6):56—61. 张旭等:CSAM'I’的静校正应用 43 physical applications in Nabighian,M.N.,Ed.. 黄潜生.王友胜。汪卫毛.大地电磁曲线校正技术在六盘山 E.M.meth—ods-theory and practice[J].Society of Exploration Geophysicists,1987。1:131—311. 盆地研究中的应用[J].江汉石油学院学报。2004,26 (3):76—78. Hedlin C.Removal of static shift in tWO dimensions by Huang Qiansheng.Wang Yusheng,Wang Weimao.Magn— etotelluric curve correction technology in Liupanshan regularization inversion[¨.Geophysics,1991,56: 2】()2—2 1O6. Basin Research[J].Journal of Jianghan Petroleum Institute,2004,26(3):76—78. Wannamaker P E.Hohman G W,Ward S H.Magnetotell— uricresponses of three—dimensional hodies in layered Wards’,Hohman G W.Electromagnetic theory for geo— earths[J].Geophysics,1 984。49:J 517-1 533. Appl ication of Static Correction CSAMT Joint inversion method ZHANG Xu ,I IU Kuan—hou ,I I Xiu (1.Xi’“ Institute of Geology and Mine ̄ al Resou, ces,Xi’an 71005,Shaanxi,China; 2.Chang’“"Universit3,,X ’“,2 71005,i,S而aan.ri,China) Abstract:In using the CSAMT method,when electrical propertY is 1aterally inhomogeneous beneath the surface,the apparent resistivity line shall have a parallel movement along the axis of apparent resistivity, which is called static shift.The static shift greatly affects the interpretation result of deep electrical property structure.In this situation,we should correct it.In this paper,we have introduced several methods of static correction and discussed their advantages and disadvantages.After comparison of various methods,we have chosen the TEM in time domain and CSAMT in frequency domain to perform the joint inversion and used the high precision calibration of TEM data to correct the CSAMT data affected by static effect.In prospecting a plum bum and zinc mine in Gansu,we applied the method of joint inversion to make static correction,and the result is in good agreement with the actual geological conditions. Key words:CSAMT;static correction;high—resistance region 原子吸收光谱分析仪简介 原子吸收光谱分析仪Atomic Absorption Spectrometry(AAS)是西安地质调查中心实验测试中心于 2005年引进的。原子吸收光谱分析法是一种基于待测基态原子对特征谱线的吸收而建立的一种分析方法。 大约可测70多种元素,浓度范围从1o 级到1o 级。测量精度可达到1 RSD,样品的前处理相对较简单, 通常只需用适当的酸对样品进行消解即可,仪器的调整及操作也较为简单。广泛应用在地质、冶金、石油、 化工、医学、环保和食品等部门。西安地质调查中心实验测试中心现配备了德国耶拿公司的两种原子吸收 光谱分析仪。 仪器型号:novAA300型火焰原子吸收光谱仪(德国耶拿公司)、Zeenit 600型石墨炉原子吸收光谱仪 (德国耶拿公司)。 特点:测量范围19O~900 nm,不确定度±0.2 nm。 应用范围:用于岩石、矿物、土壤、水系沉积物、水质、食品等样品的Au、Ag、Cu、Pb、Zn、Co、Mn、 Fe、Ni、Cr、K、Na等元素的定量分析。 (西安地质调查中心 丁怡鸣)