一、前言:用二氯化锡——高汞——重铬酸钾容量法测定铁已有七、八十年的历史,由于其操作简便、快速、质量稳定、易于掌握等优点,至今仍被广泛采用。但该法需用一定的量汞盐,进行大批试样分析,会造成环境污染,危及人民身心健康。为保护环境,寻求适宜的 I. Preface: The determination of iron with tin dichloride-high mercury-potassium dichromate volumetric method has seven or eight decades of history. Due to its simple, rapid, stable and easy-to-master, Is widely used. However, the law requires a certain amount of mercury salts, a large number of sample analysis, will cause environmental pollution, endanger people’s physical and mental health. To protect the environment, seek appropriate