流体包裹体记录了成矿过程中流体、成矿物质的演化，对于揭示成矿机制具有重要的意义，因此，利用激光剥蚀等离子质谱分析流体包裹体元素组成受到广泛重视，但目前国内相关测试尚未见报道。国际上分析流体包裹体通常采用NIST玻璃标样作为外标、23Na作内标。由于根据流体包裹体盐度估计的Na含量误差通常在20%左右，加之等离子质谱Na的空白高，误差大，制约了其应用。本项目拟在预研究的基础上，建立利用激光剥蚀等离子质谱测定单个流体包裹体元素组成的技术。申请人在详细调研国外技术方法后，拟建立两种测试方法：1.通过建立流体包裹体专用标样，结合国际通用的NIST标样，采用23Na和35Cl为内标，测试人造包裹体和精选出的天然流体包裹体样品；2.建立双气流固液法，同时添加标准溶液和内标元素，测试相同的人造包裹体。将两种方法的测试结果对比，选取其中最优方法，建立和应用LA-ICPMS原位测定单个流体包裹体分析方法。

Fluid inclusions in minerals are the main source of information about the ore-forming fluid evolution, hydrothermal transportation and mineralization processes in hydrothermal ore deposits. Laser ablation inductively coupled plasma spectrometry (LA-ICPMS) is an important technique for the elemental analysis of individual fluid inclusion, which is a hot topic among international geologists. In contrast, there is no in situ trace element analysis of individual fluid inclusion data by laboratory in China published yet. NIST SRM glasses and Na are generally used as an external and internal standard for LA-ICPMS analysis of fluid inclusion, respectively, despite the RSD of microthermometric estimation of 23Na is about 20% and even worse, the black signal of Na is high for most ICP-MS. Based on detail investigations and preliminary studies, two experimental schemes are planned. Firstly, an external standard material will be made by loading NaCl aqueous solution, dosed with target elements, into a silica glass capillary. Both Cl and Na will be used as parallel internal standards for analyzing nature fluid inclusion. Secondly, determination of the nature and artificial silica glass capillary fluid inclusion with dual gas flow calibration LA-ICPMS method. Comprehensive studies will be carried out on these two methods and applied to natural samples, aiming at setting up a better method of in-situ analysis on individual fluid inclusion by LA-ICPMS.