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本文将超声雾化技术与MIP-AAS联用,以“L”型吸收管代替“T”型吸收管作为AAS测量的吸收池,采用水冷凝和浓H_2SO_4吸收相结合去溶,研究TUSN-MIP-AAS方法测银时的某些影响因素,讨论了微波前向功率,载气流速、去溶系统、溶液酸度、共存离子及易也离元素等对吸收信号的影响,本法所得的测银的特征浓度为0.01μg/ml(328.1nm)和0.03μg/ml(338.3nm),相对标准偏差为7.5％.
In this paper, ultrasonic atomization technology was used in combination with MIP-AAS to replace “T” absorption tube with “L” absorption tube as absorption cell for AAS measurement. Water condensation and H 2 SO 4 absorption combined with desolvation were used to study TUSN-MIP -AAS method of measuring some of the factors affecting the silver, discussed the forward power microwave, carrier gas flow rate, the dissolution system, the solution acidity, coexistent ions and easy to from the elements on the absorption signal, the method of silver The characteristic concentrations were 0.01 μg / ml (328.1 nm) and 0.03 μg / ml (338.3 nm) with a relative standard deviation of 7.5%.