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在维生素 A 和异叶绿醇生产中通常用催化剂(Ⅰ)(以 Pb 变性的钯载于碳酸钙上)和 Pd/C 催化剂(Ⅱ)。本文作者研究了催化剂中钯的快速定量测定。对Ⅰ中钯的测定,可使其同特里龙(氨羧络合剂)在盐酸和氯化钾缓冲溶液中(pH1.6～2.0)作用,用硝酸铋滴定过量特里龙。Pb 和 Ca 均不干扰测定。
Catalyst (I) (Pb-denatured palladium on calcium carbonate) and Pd / C catalyst (II) are usually used in the production of vitamin A and isophytol. The authors studied the rapid and quantitative determination of palladium in catalysts. The determination of palladium in I can make it with terryon (ammonia carboxy complexing agent) in hydrochloric acid and potassium chloride buffer solution (pH1.6 ~ 2.0), titration with excess bismuth terryol. Neither Pb nor Ca interfere with the assay.