微波诱导等离子体原子发射光谱法测定汞的研究

研究了以常压低功率氩微波诱导等离子体为激发源的原子发射光谱测定Hg的方法。采用超声雾化、水冷凝、浓H_2SO_4吸收去溶的进样方法,考察了微波前向功率、载气流速、KCl和NH_4Cl浓度、酸度等因素对Hg发射强度的影响。方法已用于试样分析。

Determination of Mercury by Microwave Induced Plasma Atomic Emission Spectrometry

A low-power argon microwave induced plasma was used as an excitation source, with an ultrasonic nebulization system for sample introduction. A heated tube, a condenser and a concentrated H2SO4 desiccator were used for desolvation. Experimental parameters for determining trace Hg by AES were optimized such as microwave forware power, carrier gas flow rate, concentration of KC1 and NH4C1 and acidity of the solution. The method has been successfully applied to the analysis of fish samples. It was shown that the method is suitable for analyzing environmental and geological samples.