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通过对陕西东沟坝多金属矿床成矿过程中同位素交换动力学的研究，认为：含矿溶液中ＣＯ２的逸失是碳酸盐矿物同位素组成变化的主要原因；含矿溶液的δＤＨ２Ｏ值的变化明显受ＣＨ４含量和温度变化控制；成矿溶液来自变质水，硫来源于古海洋水硫酸盐和岩浆硫的混合；估计成矿时的δ３４Ｓ∑Ｓ值接近９．８‰，ｆＯ２为１０－２９．５～１０－３１．５，ｐＨ值为６～７。并用同位素交换动力学方程评估了硫在矿液中的停留时间。
Through the study of isotope exchange kinetics during the mineralization process of Donggouba polymetallic deposit in Shaanxi Province, it is considered that the loss of CO2 in the ore-bearing solution is the main reason for the change of isotopic compositions of carbonate minerals. The change of δDH2O value of ore-bearing solution is obvious Controlled by the change of CH4 content and temperature; the ore-forming solution comes from metamorphic water and the sulfur comes from the mixture of ancient marine sulfate and magmatic sulfur; the δ34SΣS value of mineralization is estimated to be close to 9.8 ‰ and fO2 is 10-29. 5 ~ 10-31.5, pH is 6 ~ 7. The isotopic exchange kinetics equation was used to estimate the residence time of sulfur in the ore fluid.