A series of photochemical experiments with sulfur dioxide were carried out using a xenon lamp (λ > 200 nm), a low-pressure mercury lamp (λ = 184.9 and 253.7 nm), and an UP-213 laser system (λ = 213 nm) as light sources. Based on the isotope data obtained for elemental sulfur (the end product of SO2 photolysis), we revealed specifics in correlations between δ34S, ∆33S, and ∆36S values depending on the spectral characteristics of the incident radiation. Our studies showed that the Archean Δ33S/δ34S and Δ36S/Δ33S ratios could be reproduced in the SO2 photolysis experiments by combining spectral composition of the radiation, the intensity of the spectral components, and the partial pressure of SO2. The results of the experiments suggest that the UV radiation with wavelengths less than 200 nm was a determining factor in the production of sulfur isotopic anomalies in the Archean atmosphere.

中文翻译：

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不同波长紫外辐射下光化学 SO2 过程中与质量无关的硫同位素分馏

使用氙灯（λ > 200 nm）、低压汞灯（λ = 184.9 和 253.7 nm）和 UP-213 激光系统（λ = 213 nm）对二氧化硫进行了一系列光化学实验作为光源。根据为元素硫（SO2 光解的最终产物）获得的同位素数据，我们揭示了 δ34S、Δ33S 和 Δ36S 值之间的相关性具体取决于入射辐射的光谱特性。我们的研究表明，通过结合辐射的光谱成分、光谱成分的强度和 SO2 的分压，可以在 SO2 光解实验中再现太古代 Δ33S/δ34S 和 Δ36S/Δ33S 比率。