试验了乙酸在电感耦合等离子体原子发射光谱(ICP-AES)中溶剂效应,考察了不同浓度的乙酸对7种金属元素谱线强度、灵敏度的影响.除锌Ⅱ外,元素的谱线强度随乙酸浓度的增加,总体呈下降趋势;谱线灵敏度的变化与元素种类有关,与原子线或离子线的类型无关.在乙酸(4+96)溶液中,雾化气压力对能量不同的原子线和离子线影响有明显差异.谱线强度随雾化压力的增加而先增高后降低,元素谱线强度降低的程度与谱线的总能量呈负相关性,总能量超过5 eV时,降低程度超过80%;对样品溶液提升量和采用辅助气流量对谱线强度的影响进行了试验,并给出了结果.

Solvent effect of acetic acid on intensity and sensitivity of spectral lines of 7 metal elements (As,Cd,Cr,Cu,Ni,Pb and Zn) in ICP-AES was studied.Intensity of spectral lines of elements mentioned above (with exception of Zn) showed tendency to decrease with the increase of concentration of acetic acid.Changes in sensitivity of spectral lines were related to kind of element,and were not related to the type of spectral lines.As tested in HOAc (4+96) solution,the influence of pressure of nebulization gas to intensity of spectral lines (atomic and ionic) were different with differences of total energy of the spectral lines of element.Changes of spectral line intensity tended to increase at first and to decrease afterwards as the pressure of nebulization gas was increased,and the magnitude of decrease of spectral line intensity was inversely proportional to the total energy of spectral lines of the element.For spectral lines of an element having its total energy greater than 5 eV,magnitude of derease of intensity achieved to 80%.The effect of rate of up-taking of sample solution and the effect of flow-rate of auxilliary gas were also tested and results were given.