Among other reagents used have been ??and titanous ion; a mixture of ferrous ion, oxygen, ascorbic acid , and ethylenetetraaminetetraacetic acid.
使用过的其它试剂有?Ш脱穷牙胱印⒀翘?离子氧，抗坏血酸和乙四胺四乙酸混合物。
Ferrous ion
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Ferrous
（重定向自Ferrous ion）
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Ferrous (Fe), in chemistry, indicates a divalent iron compound (+2 oxidation state), as opposed to ferric, which indicates a trivalent iron compound (+3 oxidation state). This usage has mostly been deprecated, with current IUPAC nomenclature having names containing the oxidation state in bracketed Roman numerals instead, such as iron(II) oxide for ferrous oxide (FeO), and iron(III) oxide for ferric oxide (Fe2O3).
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