【摘要】 研究了Ｐｂ（Ⅱ）－ＫＩ－罗丹明Ｂ－ＴｒｉｔｏｎＸ－１００多元配合物萃取光度法测定微量铅的新方法，该配合物λｍａｘ＝５６５ｎｍ；表观摩尔吸光系数ε５６５＝１．０×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，Ｐｂ２＋在０～３０μｇ／１０ｍｌ一范围内遵守Ｂｅｅｒ定律．本法用于皮蛋等食品中微量铅测定获得令人满意结果．更多还原

【Abstract】 A new method for extractive spectrophotometry with Ph(Ⅱ) - KI - Rhodamine B - Triton X - 100 multicomponent complex of determination of microamount of lead in food has been studied. The complex has maximum absorption at 565 urn and the molar abedrptivity is 1. 0 ×105 L·mol-1· cm-1, Beer’s law is obeyed for Ph(Ⅱ) in the range of 0～30 μg/10mL. Thin new method has been applied to the determination of lead in food with satisfactory results.更多还原