双波长等吸收点光度法同时测定矿石中铂和钯
Simultaneous Determination of Platinum and Palladium in Ores by Dual-Wavelength Equioalent Absorbance Point Spectrophotometry
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摘要: 在SnCl_2存在的1mol/LHCI溶液中,用双硫腙-四氯化碳(H_2D_2-CCl_4)溶液同时萃取Pd和Pt。选择参比波长λ_1=776.6nm,测定波长λ_2=638.0nm,双波长等吸收点光度法测定Pd;再选择Pt的λ_(max)(720nm)单波长法测定Pt。方法可用于矿石中Pt和Pd的同时测定。