利用亚铁氰化钾与三价铁盐溶液反应进行足迹捺印

Footprinting by the reaction of potassium ferrocyanide and trivalent iron salt solution

目的利用亚铁氰化钾与三价铁盐溶液反应生成普鲁士蓝沉淀的显色原理,探索非油墨捺印足迹的新方法。方法用脚沾取一定浓度的三价铁盐溶液,踩在经过亚铁氰化钾溶液处理过的纸张上。结果在经过处理的纸张上出现蓝黑色的足迹印痕。结论该方法安全卫生,操作简便,捺印效果好,具有一定的推广性。

Objective To explore new methods of taking footprints with non-ink solution. Methods Geting the triva lent iron salt solution of a certain concentration with feet, plant the feet on the potassium ferrocyanide solution-treated papers. Resuits Black-blue footprints appear on the treated papers. Conclusion The method is scientific, safe and simple.