Stable Isotope Ratios of Combustion Iron Produced by Evaporation in a Steel Plant
Stable Isotope Ratios of Combustion Iron Produced by Evaporation in a Steel Plant
复制标题
DOI：
10.1021/acsearthspacechem.8b00171
复制
发表时间：
2019-02
影响因子：
3.4
通讯作者：
Minako Kurisu;K. Adachi;K. Sakata;Y. Takahashi
中科院分区：
文献类型：
--
作者：
Minako Kurisu;K. Adachi;K. Sakata;Y. Takahashi
气溶胶中的燃烧铁 (Fe) 是海洋表层溶解铁的来源之一。铁同位素比 (δ56Fe) 是铁来源解析的重要工具，因为蒸发排放的燃烧铁可能产生比天然材料更低的 δ56Fe 值。然而，用于燃烧 Fe 的 δ56Fe 数据不足。因此，对钢铁厂排放的Fe的δ56Fe值进行了研究，并对燃烧Fe的代表性δ56Fe值进行了讨论。大量亚微米球形氧化铁颗粒的存在表明这些颗粒是通过高温蒸发而散发出来的。细颗粒产生的 δ56Fe 远低于原始材料（低至-3.53‰），表明蒸发过程中发生了 Fe 同位素分馏。根据这项研究和我们之前的数据，我们建议-3.9‰至-4.7‰作为燃烧Fe的代表性δ56Fe范围。使用此范围的质量平衡计算表明，燃烧 Fe 的贡献约为 57–83%...
Combustion iron (Fe) in aerosols is one of the sources of dissolved Fe in the surface ocean. The iron isotope ratio (δ56Fe) is an important tool for source apportionment of Fe because combustion Fe emitted by evaporation possibly yields lower δ56Fe values than natural materials. However, there are insufficient data of δ56Fe for combustion Fe. Hence, δ56Fe values of Fe emitted from a steel plant were investigated, and the representative δ56Fe value of combustion Fe was discussed. The presence of a large number of submicron spherical Fe oxide particles suggested that the particles were emitted by high-temperature evaporation. Fine particles yielded much lower δ56Fe (as low as −3.53‰) than original materials, indicating that Fe isotope fractionation occurred during evaporation. Based on this study and our previous data, we suggest −3.9‰ to −4.7‰ as the representative δ56Fe range of combustion Fe. Mass balance calculations using this range suggest that the contribution of combustion Fe is approximately 57–83%...