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本文对活性炭吸附二氰基金(Ⅰ)酸盐、二硫脲金(Ⅰ)、二硫代氰酰金(Ⅰ)酸盐和二硫代硫酸络金(Ⅰ)酸盐等络合物进行了研究。小型径流式吸附柱与装有火焰式原子吸收光谱仪的流动注射分析系统连接,可以测定与(Ⅰ)络合物的吸附速率和吸附程度有关的数据。测绘了相应的吸附等温线。拍摄了贫炭和饱和炭(吸附K〔Au(SCN)_2〕而得)表面的扫描电子显微照片。结果表明,Au(SCN)_2~-在活性炭表面上还原为金属金。试验结果证明,活性炭从水溶液中吸附络合金的吸附率按下列配位基的顺序降低:SCN~->SC(NH_2)_2>CN~->>S_2O_3~(2-)。
In this paper, the complexes of activated carbon, such as dicyanodiamine (Ⅰ) acid salt, dithiurourea gold (Ⅰ), dithiocyanato gold (Ⅰ) acid salt and gold dithiosulfate the study. The small-scale radial flow adsorption column is connected to a flow injection analysis system equipped with a flame atomic absorption spectrometer to determine the data relating to the adsorption rate and adsorption of the complex (I). The corresponding adsorption isotherms were plotted. A photograph of the surface of poor carbon and saturated charcoal (adsorbed by K [Au (SCN) 2]) was taken. The results showed that Au (SCN) _2 ~ - reduced to metal gold on the surface of activated carbon. The experimental results show that the adsorption rate of activated carbon from the aqueous solution decreases with the order of the following ligands: SCN ~ -> SC (NH_2) _2> CN ~ - >> S_2O_3 ~ (2-).