【摘要】 本文提出了测定镓及磷化镓中微量铋的分析方法.在氢氧化钠介质中,铋与PAR的络合物在峰（?）位为-0.65伏（VS.S.C.E）处出现清晰、灵敏的导数极谱催化波,可不经分离、富集直接进行测定.方法具有较高的灵敏度和选择性,操作方便快速.含量为10^-8微克/毫升级的铋,其回收率在95%以上,变异系数约2%.更多还原

【Abstract】 The oscillopolarographic behavior of the adsorption catalytic wave of Bi in Ga and GaP are studied. Bi can be directly determined according to height of the catalytic wave at-0.65V (vs. SCE) in NaOH with PAR without separating and masking. The detection limit was 2×10~-2μg/mL. The calibration curve covers the range 2×10~-2—4×10~-1 μg/mL Bi. The senistivity and selectivity are satisfactory.The procedure is simple and rapid. Variation coefficient is 2% with relative error for recovery,10%.更多还原