聚丙烯酰胺活化过氧化氢氧化依莱铬菁R催化光度分析法测定痕量汞  

Catalytic Spectrophotometry for the Determination of Trace Mercury Based on Oxidizing Coloration Reaction of Nickel-Eriochrome green R by hydrogen peroxide

作　　者：姜玉颖[1] 施小英[1] 肖艳云[1] 危亮亮[1] 卓嘉[1] 郑建锋[1] 

机构地区：[1]漳州师范学院化学系,福建漳州363000

出　　处：《漳州师范学院学报（自然科学版）》2003年第2期64-67,共4页Journal of ZhangZhou Teachers College（Natural Science)

摘　　要：在50℃、20min和pH=2.0的条件下,基于聚丙烯酰胺能活化汞(Ⅱ)催化过氧化氢氧化依莱铬菁R的显色反应,据此建立了聚丙烯酰胺活化过氧化氢氧化依莱铬菁R催化光度分析法测定痕量汞的新方法.汞(Ⅱ)的含量在:0.40～4.40μg/L范围内与△A值符合比尔定侓,其△A = 0.3494 + 0.03254CHg2+(μg/L),相关系数r=0.9994,检出限7.9×10-11g/mL .该法已成功用于水样中汞(Ⅱ)的含量的测定.A new catalytic spectrophotometry is proposed for the determination of trace mercury based on Hg2+ catalyzed oxidizing coloration reaction of Nickel-Eriochrome green R by hydrogen peroxide under the condition of polyacrylamide as an activator in the solution at PH=2.0,on heating 20min at 50℃. The linear regression aquation is △A=0.3494+0.03254CHg2+(μg/L),r=0.9994. The Beer抯 law is obeyed in the range of 0.40~4.40μg/L with detection limit of 7.9?0-11g/mL. The method has been applied to the determination of trace mercury in water samples with satisfactory result.

关 键 词：汞 含量测定 催化光度分析法 依莱铬菁R 聚丙烯酰胺 过氧化氢 显色反应 

分 类 号：O614.243[理学—无机化学] O657.32[理学—化学]