A simple and reliable method for sulfate reduction using the Kiba reagent is adapted for the preparation of trace amounts of natural sulfates and sulfuric acid for isotopic (δ³⁴S, δ³³S and δ³⁶S) sulfur analysis. It is shown that the method is successfully applicable for the preparation of samples of sulfates and sulfuric acid with a sulfur content of 0.1 mg for isotopic analysis of ³⁴S, ³³S, and ³⁶S isotopes. The accuracy of δ³⁴S determination in natural sulfates was ±0.3‰, the accuracy of δ³⁴S, ∆³³S, and ∆³⁶S measurement in sulfuric acid was ±0.5, ±0.027, and ±0.38‰, respectively.

中文翻译：

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Kiba试剂回收硫的方法在随后的天然硫酸盐和硫酸同位素分析中的应用

一种用于使用该试剂木场硫酸盐还原简单且可靠的方法适用于制备的天然硫酸盐和硫酸的痕量于同位素（δ ³⁴ S，δ ³³ S和δ ³⁶ S）硫分析。结果表明，该方法可成功用于制备硫含量为0.1 mg的硫酸盐和硫酸样品，用于³⁴ S，³³ S和³⁶ S同位素的同位素分析。δ的精度³⁴在自然硫酸盐决心为±0.3‰，δ的精度³⁴ S，Δ ³³ S，和Δ ³⁶硫酸中S的测量值分别为±0.5，±0.027和±0.38‰。