Pollution of sulfur compounds could result in serious environmental issues, while the excessive intake tended to damage the respiratory and nervous system of living beings. In this article, a microplasma converter with small size, easy operation and low gas and power consumption was constructed to fulfill the high-efficient oxidation process of H2S to SO2, which was applied to both spectrophotometry and visual colorimetry to achieve a simple and quick nonchromatographic speciation analysis of H2S/SO2 or S2-/SO32-. Especially, analytes were introduced by acidified to vapor, greatly alleviating the matrices interferences, and visual colorimetry could attain direct naked eye detection without expensive instruments and tedious operation procedures. The lowest limit of detection was 3.47 μmol/L for both aqueous S2- and SO32- ions, and the integration of two methods covered a wide detection range of 0.05–7 mmol/L. These developed methods were applied to analysis of real environmental water samples successfully.

中文翻译：

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基于微等离子体转换器的分光光度法和视觉比色法，用于环境水样中 H2S/SO2 或 S2-/[公式省略] 的非色谱形态分析


硫化合物的污染会导致严重的环境问题，而过量摄入往往会损害生物的呼吸和神经系统。本文构建了一种体积小、操作简便、气体和功耗低的微等离子体转换器，实现了 H2S 到 SO2 的高效氧化过程，并将其应用于分光光度法和目视比色法，实现了简单快速的 H2S/SO2 或 S2-/SO32- 的非色谱形态分析。特别是分析物通过酸化成蒸汽引入，大大减轻了基质的干扰，目视比色法无需昂贵的仪器和繁琐的操作程序即可实现肉眼直接检测。S2- 和 SO32- 水溶液的最低检测限为 3.47 μmol/L，两种方法的整合涵盖了 0.05–7 mmol/L 的宽检测范围。这些开发的方法已成功应用于真实环境水样的分析。