酚藏花红(PhenosaJranine)属于醌亚胺类对氮蒽染料,它在光度分析中的应用仅见萃取光度法测定铟的一篇报导。本文应用酚藏花红作显色剂,找出溴汞酸与酚藏花红形成的缔合物易为混合溶剂苯+丁酮(3+1)所萃取,可用来比色测定汞。本文较详细地探讨了萃取比色的主要条件,其它离子的干扰,并用于岩石矿物中微量汞的分析。实验表明,本法在选择性、灵敏度、稳定性及重现性等方面均获得较满意的结果。 PhenosaJranine is a quinone imine-based anthracene dye. Its application in photometric analysis is only reported in the photometric determination of indium. In this paper, the application of phenol red as a reagent to find the association of brominated mercury acid and phenol red flower complex easily mixed benzene + butanone (3 + 1) extraction, can be used for colorimetric determination of mercury. In this paper, the main conditions of colorimetric extraction are discussed in detail, the interference of other ions and the analysis of trace mercury in rock minerals. Experiments show that this method obtains more satisfactory results in terms of selectivity, sensitivity, stability and reproducibility.