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研究人员通常把生产中经常可能接触到的毒物按照它的化学性质、对人毒性作用的特点或应用范围分为七类。第一类是金属、类金属等无机物,如印刷业中使用的铅、制造温度计所使用的汞等。第二类是有机溶剂,如喷漆中的苯类、作为清洗剂的汽油等。第三类是苯的氨基硝基化合物,它们多是脂溶性物质,可以通过完整的皮肤吸收进人体,损害血液系统、
Researchers often classify poisons that are most likely to come into contact with production in seven categories according to their chemical properties and the characteristics or application of toxic effects on humans. The first category is metals, metals and other inorganic substances, such as the printing industry, the use of lead, mercury used in the manufacture of thermometers. The second category is organic solvents, such as benzene in paint, gasoline as a cleaning agent and so on. The third category is benzene amino nitro compounds, which are mostly fat-soluble substances, can be absorbed into the body through the intact skin, damage the blood system,