大连沿海系温带藻类生活区,但由于近几年沿海兴建一些工厂,其排出的污水及垃圾造成海水污染面已有所增加。我们采得受污染的绿藻石莼(Ulva lactuca)测其希尔反应,发现被Pb++污染后希尔反应受抑制,为此我们以不同浓度的人工污染海水培养藻体,然后采用铅离子选择电极对石莼富集Pb++量进行分析,方法简便快速,收到满意的结果。有关Pb++的分析,有用光度法、原子吸收法。但这些方法均要求较繁杂的材料处理。而用离子选择电极法则可直接用材料匀浆液测定。 Dalian coastal temperate algae living area, but due to the construction of some factories along the coast in recent years, the discharge of sewage and garbage caused by the sea pollution has increased. We measured the Hill reaction with contaminated Ulva lactuca and found that Hill reaction was inhibited by Pb ++ contamination. For this reason, we cultured algae with different concentrations of artificially polluted seawater and then selected them with lead ion The electrode was used to analyze Pb + + enrichment in stone scallop. The method was simple and rapid, and received satisfactory results. For Pb + + analysis, useful spectrophotometry, atomic absorption method. However, these methods require more complicated material handling. The ion-selective electrode method can be directly measured with a homogenate of the material.