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1811年,法国药剂师库特瓦处理从诺曼底和布列塔尼沿海岸的低浅地方收集来的紫菜、海带和其他棕色的藻类植物的过程中发了碘。纯净的碘,是紫黑色有光泽的片状晶体,它的希腊文的原意,便是“紫色的”意思。 碘在大自然里很少,仅占地壳总重量的一千万分之一,可是,由于碘很易升华,因此到处都有它的足迹:海水中有碘,岩石中有碘,我们吃的葱,海里的鲜都有微量的碘。海水中碘含量约为十万分之一,不过海里倒有许多天然的“碘工厂”——海藻。据测定,在海藻灰中约有1％的碘,世界上也有一些比较集中的碘矿,含有较多的碘
In 1811 French pharmacist Kutwa made iodine during the processing of seaweed, kelp and other brown algae collected from the lowlands of Normandy and Brittany on the coast. Pure iodine is a violet-black, glossy, lamellar crystal whose meaning in Greek is “purple”. Iodine is rarely found in nature and accounts for only one ten millionth of the total weight of the earth’s crust. However, because iodine can easily sublimate, it has its footprint everywhere: iodine in the sea, iodine in the rock, and what we eat Onion, fresh sea have a trace of iodine. The amount of iodine in sea water is about one in 100,000, but there are many natural “iodine factories” down in the sea - seaweed. According to the determination of seaweed ash in about 1% of the iodine, the world also has some more concentrated iodine, containing more iodine