火焰原子吸收光谱仪和电感耦合等离子体发射光谱仪在水质检测中的比较分析

Comparison and Analysis of Flame Atomic Absorption Spectrometer and Inductively Coupled Plasma Emission Spectrometer in Water Quality Inspection

火焰原子吸收光谱仪和电感耦合等离子体发射光谱仪作为测定水质中金属含量常用的仪器,在实验室中得到广泛应用。本文采用火焰原子吸收光谱仪与电感耦合等离子体发射光谱仪测定水中的铜、锌、镍元素,对火焰原子吸收光谱仪与电感耦合等离子体发射光谱仪在标准曲线、仪器检出限、准确度、精密度和加标回收率方面进行研究与分析。试验结果表明,电感耦合等离子体发射光谱仪具有检出限低,准确度高、精密度高的优势,但是在测定组分复杂的样品时,容易产生基体效应,从而影响检测结果的准确性。而火焰原子吸收光谱仪虽然检出限较高,准确度、精密度相对较低,但在抗基体干扰能力方面的优势大于电感耦合等离子体发射光谱仪。

Flame atomic absorption spectrometer and inductively coupled plasma emission spectrometer are widely used in laboratory for the determination of metal content in water.In this paper,flame atomic absorption spectrometer and inductively coupled plasma emission spectrometer are used to determine copper,zinc and nickel in water.The standard curve,instrument detection limit,accuracy,precision and standard recovery of flame atomic absorption spectrometer and inductively coupled plasma emission spectrometer are studied and analyzed.The experimental results show that inductively coupled plasma emission spectromete has the advantages of low detection limit,high accuracy and high precision,but it is easy to produce matrix effect in the determination of complex samples,which affects the accuracy of the detection results.Although flame atomic absorption spectrometer has higher detection limit and lower accuracy and precision,it has more advantages than inductively coupled plasma emission spectrometer in resisting matrix interference.