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火焰原子吸收法测定铝都采用一氧化二氮-乙炔火焰,但灵敏度较低。近年来无焰原子吸收法得到了广泛的应用,对于钢铁和冶金产品亦有报导。但是一般的无焰法背景吸收较大。自从1977年“日立”生产170-70型塞曼效应无火焰原子吸收分光光度计后,以它的高扣背景能力(达到1.7A)展示了广阔的前途。我们用“日立”170-70仪器对钢中铝的测试作了一些研究,与标钢值相比,结果较好。另外,对简易标准加入法作了些探讨。
Flame atomic absorption method for the determination of aluminum are nitrous oxide - acetylene flame, but the sensitivity is low. In recent years, flameless atomic absorption method has been widely used, for the steel and metallurgical products are also reported. However, the general non-flame method to absorb the larger background. Since 1977 Hitachi produced the 170-70 Zeeman effect flameless atomic absorption spectrophotometer, with its high buckle background (up to 1.7A) shows a bright future. We use the “Hitachi” 170-70 instrument on the aluminum in the steel made some research, and the standard steel value, the result is better. In addition, some discussions have been made on the simple standard addition method.