气液包裹体稳定同位素样品制备及与气液相成分联测方法

A COMBINED METHOD FOR THE PREPARATION OF SAMPLES FOR STABLE ISOTOPIC ANALYSIS AND THE COMPOSITIONAL ANALYSIS OF GAS AND LIQUID PHASES IN FLUID INCLUSIONS

本方法研制了一套“气液包裹体稳定同位素样品制备与气液相成分分析联测装置”，将包裹体稳定同位素样品制备装置与气相色谱仪连结起来，能在一个样品中测定出包裹体中的碳、氢、氧稳定同位素及气相和液相成分。整套装置性能良好，主要测定项目均能达到规定的技术指标，并满足包裹体测定要求：①δD制样及测定结果的标准偏差≤3‰；②δO制样及测定结果的标难偏差≤0．3‰。；③δ13C制样及测定结果的标准偏差≤0．14‰；④气相成分可测定CO2、H2、CO、CH4、N2和H2O等组分；⑤液相成分可与已有的液相成分分析方法联测，测定包裹体中主要阴阳离子，如K+、Na+、Ca2+、Mg2+、F-、Cl-、SO24-等组分。

A combined method has been developed for the preparation of samples for stable isotopic anal-ysis and the compositional analysis of gas and liquid phases in fluld inclusions, i. e., the preparationof samples for stable isotopic analysis with gas-chromatography. The δ13C, δD, δ18O and the compo-sition of gas and liquld phases in fluld inclusions can be measured on the same sample.The whole set of equipment is good in performance. The requirements can be satisfied for fluidinclusion measurement.1. The standard devlation for the preparation of δD samples and determination results is ≤3‰.2. The standard deviation for the preparation of δ18O samples and determination results is ≤0. 3‰.3. The standard deviation for the preparation of δ13C samples and determination results is ≤0. 14‰.4. The composition of gas phase in fluid inclusions which can be determined include CO2, H2,CO, CH4, N2, H2O, etc.5. The composition of liquid phase can be determined by the available methods. The main an-ions and cations in fluid inclusions including K+, Na+, Ca2+, Mg2+, F-, Cl-, SO24-, etc. can bedetermined.