硫同位素对地表水硫酸盐来源示踪的研究进展

硫酸盐是地表水中重要的化学组成之一,并且可以提供丰富的地质过程和人类活动的综合信息,对地表水中硫酸盐来源的精确识别具有极为重要的意义。由于不同硫酸盐具有特定的硫同位素组成,硫同位素已被应用于识别地表水硫酸盐来源。总结了地表水中不同硫酸盐来源δ~(34)S_(SO4)范围,综述了国内外利用硫稳定同位素对地表水中硫酸盐污染源示踪的研究进展。讨论了仅仅使用δ~(34)S_(SO4)来进行溯源在硫酸盐污染示踪方面的局限性,并对未来硫酸盐污染溯源技术进行了展望。

Sulfate is one of the important chemical constituents of surface water and can provide a wealth of integrated information on geological processes and human activities.Therefore,it is of great importance to accurately identify the source of sulfate in surface water.Due to the fingerprinting characteristics of sulfur isotopes,the use of sulfur stable isotopes to identify sulfate sources has been widely used.In the review,theδ34SSO ranges of different sulfate sources in surface water are summarized,and the research progress of using sulfur stable isotopes for tracing sulfate pollution sources in surface water at home and abroad is reviewed.The limitations of using onlyδ34SSO for traceability in sulfate pollution tracing are also discussed,and future techniques for sulfate pollution traceability are prospected.