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表面等离子体振子共振(SPR)光谱法与循环伏安法相结合已成功用于研究乙基黄药、庚基黄药、二硫代磷酸盐和丙基三硫代碳酸盐浮选捕收剂与金表面之间的相互作用。在这些巯基捕收剂与金相互作用的电位区内,可获得易于测量的响应,这四类捕收剂有不同的SPR最大值,烷基链越长,SPR响应越高,三硫代碳酸盐的响应值最大。在非常阳极和阴极电位下,SPR响应值与电流密度响应值之间有相当大的差别。可以指出,在低至-300mV(相对标准氢电极电位)电位下,这类巯基捕收剂仍能被吸附。
Surface Plasmon Resonance (SPR) spectroscopy combined with cyclic voltammetry has been successfully used to study the effects of ethylxanthate, heptylxanthate, dithiophosphate and propyltrithiocarbonate flotation collectors Interaction with the gold surface. In the potential region where these thiol collectors interact with gold, an easily measurable response is obtained. These four collectors have different maximum SPR values. The longer the alkyl chain, the higher the SPR response. The trithiocarbon The salt has the highest response. At very positive and negative potentials there is a considerable difference between the SPR response and the current density response. It may be noted that such thiol collectors can still be adsorbed at potentials as low as -300 mV (relative standard hydrogen electrode potential).