硬聚氯乙烯饮水管材和管件标准中[5]锅的测定尚未建立相应的配套检验方法。本文研究建立了柠檬酸-OP-苯芴酮分光光度法测定硬聚氯乙烯饮水管材和管件中的锡。回收率在98％一118％之间，在0·0一0．2ing／L范围内r＞0．998，锡含量为0．03mg／L，0．10mg／L，0．20mg／L时，其相 Hard PVC water pipe and fittings standards [5] Determination of the pot has not yet established the appropriate test methods. In this paper, the citric acid-OP-phenylfluorenone spectrophotometry was established to determine the tin content in rigid polyvinyl chloride drinking water pipes and fittings. The recoveries ranged from 98% to 118%, r> 0.998 over the range of 0-0 0.2 ng / L, tin contents of 0.03 mg / L, 0.10 mg / L and 0.20 mg / L , Its phase