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随着现代工业的发展,金属粉尘对肺部的职业危害日益受到重视。过去曾认为无害的含铁粉尘已为人们所关注。在自然界中,铁常以氧化物形式存在。如赤铁矿,以Fe_2O_3形式存在,其铁含量为70%;褐铁矿,以(FeO[OH])·nH_2O形式存在,铁含量约63%;磁铁矿,为Fe_3O_4,具有磁性,铁含量约25%。人工
With the development of modern industry, the occupational hazards of metal dust to the lungs are receiving more and more attention. Iron dust, which was considered harmless in the past, has attracted people’s attention. In nature, iron often exists as an oxide. Such as hematite, exists in the form of Fe_2O_3 with an iron content of 70%; limonite exists in the form of (FeO [OH]) · nH_2O with an iron content of about 63%; magnetite is Fe_3O_4 with magnetic iron Content of about 25%. Artificial