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比色测定青銅中铁,文献报导极多,唯pH=1.8～2.5,磺基水揚酸与三价铁离子,生成稳定的[FeSaI.]~+絡离子法較为簡便可靠。但不适合含錫青銅。笔者实踐表明,生成偏錫酸的办法除錫,透过滤紙的微量錫,也足以影响鉄的测定。后藤秀弘等,提出用高氯酸与氫溴酸,驅除錫的干扰的方法。笔者在上列的基础上,經一年多試驗,二千余个样品的实践,认为效果較滿意。
Colorimetric determination of bronze iron, reported in the literature very much, the only pH = 1.8 ~ 2.5, sulfosalicylic acid and ferric ions to generate stable [FeSaI.] ~ + Complex ion method is relatively simple and reliable. But not suitable for tin bronze. The author’s practice shows that the method of generating partial stannic acid tin, trace tin through the filter paper, is also sufficient to affect the determination of flesh. Hideki Goto, etc., proposed with perchloric acid and hydrobromic acid, repellent tin interference method. The author on the basis of the above, after more than a year of testing, more than two thousand samples of practice, that the effect is more satisfactory.