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用自制高效玻璃雾化器代替WYX-401型原子吸收分光光度计的雾化器,并相应改动其预混合雾室的结构。试验确定了火焰原子吸收测定铝的最佳条件。铝的特征浓度值达到0.59微克/毫升/1％吸收;检出限达到0.18微克/毫升.考察了盐酸、硝酸、过氯酸和各种共存元素对铝的干扰。拟定了钢铁中酸溶铝的直接快速火焰原子吸收测定方法。本法测定下限为0.005％。以本法分析硅钢、低合金钢、工业纯铁标准样品和实际生产控制分析样品得到的结果与标准样品的标准值或比色法测定的结果相符合。方法快速、简便、灵敏、可靠。
Replace the WYX-401 Atomic Absorption Spectrometer’s atomizer with a self-made high efficiency glass atomizer, and modify the structure of the premixed mist chamber accordingly. The experiment determined the optimum conditions for the determination of aluminum by flame atomic absorption spectrometry. The characteristic concentration of aluminum reached 0.59 μg / ml / 1% absorption, and the detection limit reached 0.18 μg / ml.The interference of hydrochloric acid, nitric acid, perchloric acid and various coexisting elements on aluminum was investigated. A direct and rapid flame atomic absorption spectrometry method for the determination of acid-soluble aluminum in steel was developed. The lower limit of this method is 0.005%. The results of the analysis of silicon steel, low alloy steel, industrial pure iron standard samples and actual production control analysis samples by this method are in accordance with the standard values of standard samples or the results of colorimetric determination. The method is fast, easy, sensitive and reliable.