Tараян等曾应用三苯甲烷类碱性染料——甲基绿[Methy Green(Basic Blu0)]作为汞的显色剂萃取分光光度法测定微量汞。然而该法有以下缺点:首先他们选用了对人体有害的有机溶剂——苯作萃取剂;其次他们虽也曾选用过乙酸丁酯作 Tараян et al. Have used methylpyridinium methylate (Methyl Green [Basic Blu0]) as a chromogenic reagent for the spectrophotometric determination of trace mercury. However, this method has the following disadvantages: First, they use organic solvents that are harmful to the human body - benzene extractant; second, although they have also used butyl acetate