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空气悬浮微粒中含致癌物质,如镍、镉、铬、铍、钒或砷等空气污染物,通过呼吸道、皮肤进入人体,而以呼吸道的吸入危害极大,它是造成肺癌或皮肤癌的重要原因.被污染的空气,会夺走人的生命,这是无情的现实。为了加强环境保护工作,分析空气县浮微粒中重金属元素的含量,很有必要。我们选择了成都电治厂镍车间为取样点,使用低容量采样法,将空气生粒捕集在聚苯乙烯滤膜上。样品不用干法灰化,而用湿法分解。然后在文献的基础上,改用直接浓缩蒸干法,使待测重金属富集在平头石墨电极上,进行光谱测定。并用原子吸收分光光度法(AAS法)核对。
Airborne aerosols contain airborne pollutants such as nickel, cadmium, chromium, beryllium, vanadium or arsenic that enter the body through the respiratory tract and the skin, and inhalation of the respiratory tract is extremely harmful. It is an important cause of lung cancer or skin cancer The reason: polluted air, will take away human life, this is the relentless reality. In order to strengthen the work of environmental protection, it is necessary to analyze the content of heavy metal elements in airborne particles. We chose the Chengdu plant Nickel plant as a sampling point, the use of low-volume sampling method, the air particles captured in the polystyrene filter. The sample is not dry ashed, but wet decomposition. Then on the basis of the literature, we switched to the direct concentration-evaporating-dry method, and the heavy metals to be tested were enriched on the flat graphite electrodes for spectrometry. And checked by atomic absorption spectrophotometry (AAS method).