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根据泉（池）水中气体的组分和同位素组成，讨论了五大连池火山区气体的来源和运移。１９９７年８月从五大连地火山区泉（池）中采集了９个气、水样品，同年９月测定了游离气和水溶气的气体组分、Ｈｅ同位素比值和ＣＯ２的Ｃ值。气体以ＣＯ２为主，多数样品的ＣＯ２体积分数大于８０％。Ｈｅ和ＣＨ４的体积分数变化范围大，分别为０．７×１０－６～３８０×１０－６和４．０×１０－６～１８０×１０－６。３Ｈｅ／４Ｈｅ比值分布在１．０Ｒａ～３．３Ｒａ之间（Ｒａ＝１．４×１０－６，大气对流层３Ｈｅ／４Ｈｅ比值）。４Ｈｅ／２０Ｎｅ比值均比大气中的高，分布在０．３５～１０１１之间。ＣＯ２的 １３ｃ（ＰＤＢ）值与地幔或岩浆ＣＯ２的值一致，为－９．６‰～－４．２‰。这些均表明，泉水为渗入地下的大气降水，经过不同深度和不同岩层渗流出露地表；气体为幔源组分和地壳组分的混合物，利用二元混合模型估计，至少１３％～３７％的Ｈｅ源于地幔；ＣＯ２可能为幔源岩浆脱气后残留的ＣＯ２；Ｎ２、Ｏ２和Ａｒ主要为大气来源；研究区地球深部气体和热仍在大量地向地壳浅层和地表逸散。
Based on the composition and isotopic composition of gas in spring (pool) water, the gas source and migration in the Wudalianchi volcanic area are discussed. In August 1997, nine samples of gas and water were collected from the volcanic springs in the Wadalian area. In September of the same year, the gas composition, the He isotope ratio and the C value of CO2 were measured. Most of the gases are CO2, and most of the samples have a CO2 volume fraction greater than 80%. The volume fractions of He and CH4 ranged from 0.7 × 10-6 to 380 × 10-6 and from 4.0 × 10-6 to 180 × 10-6.3He / 4He, respectively, 3.3 Ra (Ra = 1.4 × 10 -6, 3He / 4He ratio of atmospheric troposphere). 4He / 20Ne ratio higher than the atmosphere, located in the 0.35 ~ 1011 between. The 13C (PDB) value of CO2 is consistent with that of mantle or magma, ranging from -9.6 ‰ to -4.2 ‰. All these indicate that the spring water is the precipitation which infiltrated into the ground and exposed to the earth’s surface through seepage at different depths and different strata. The gas is a mixture of the mantle component and the crust component. Based on the binary mixed model, the gas is estimated to be at least 13% -37% He derived from the mantle; CO2 may be residual CO2 after mantle magma degassing; N2, O2 and Ar are mainly derived from the atmosphere; and deep gas and heat in the Earth’s deep area still largely escape to the shallow crust and surface.