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对于铝合金中镉量的测定用原子吸收光谱法很方便;但使用设备较复杂,价格较昂贵,因此,在一般化验室中对双硫腙光度法进行进一步讨论有一定的意义。由于镉在碱性介质中可与双硫腙形成一种红色或粉红色酮式络合物,并可被氯仿或四氯化碳定量萃取。于是对于双硫腙光度法在铝合金上的应用进行了一些实验。铝合金中一般常见元素 Cu(Ⅱ)、Fe(Ⅱ)、Ni(Ⅱ)、Zn、Mn(Ⅱ)、Cd(Ⅱ)都可与双硫腙生成可被氯仿或四氯化碳萃取的络合物。并依此顺序铜
For the determination of cadmium in aluminum alloy by atomic absorption spectrometry is very convenient; but the use of equipment is more complex and expensive; therefore, in the general laboratory for further discussion of dithizone spectrophotometry has some significance. Since cadmium can form a red or pink ketone complex with dithizone in an alkaline medium and can be quantitatively extracted with chloroform or carbon tetrachloride. So for the dithizone luminosity method in the aluminum alloy on the application of some experiments. The common elements Cu (Ⅱ), Fe (Ⅱ), Ni (Ⅱ), Zn, Mn (Ⅱ) and Cd (Ⅱ) in aluminum alloy all can form the network which can be extracted by chloroform or carbon tetrachloride with dithizone Compound. And in this order copper