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原子吸收法(包括火焰和无焰技术)测定各种元素时,有机络合剂可以提高灵敏度和选择性,本文结合各种原子化的机理,讨论了有机配位结构和性质的影响。 有机试剂在AAS中能够呈现各种效应:(1)改变元素的原子化的程度,而这种改变取决于原子化的形式和机理。有时可提高形成自由原子的效率;(2)在特定组分的AAS测定中,可以抑制或降低共存元素的干扰;(3)将待测元素以金属螯合物或离子缔合物形式萃取至有机溶剂中,能达到富集的目的,然后将萃
Atomic absorption spectrometry (including flame and flameless technology), the organic complexing agent can improve the sensitivity and selectivity when measuring various elements. In this paper, the effect of organic coordination structures and properties are discussed in combination with various atomization mechanisms. Organic reagents can exhibit a variety of effects in AAS: (1) Altering the degree of atomization of an element, which changes depend on the form and mechanism of atomization. (2) In the AAS determination of a specific component, the interference of the coexisting element can be suppressed or reduced; (3) The element to be detected is extracted in the form of a metal chelate or an ion complex to Organic solvents, can achieve the purpose of enrichment, and then extracted