藏红T萃取分光光度法测定岩石矿物中的微量汞  

Extraction-Spectrophotometric Determination of Trace Mercury in Ores by Using Safranine T

作　　者：刘长松[1] 李新民[1] 门英 卢建秀 Liu Changsong;Li Xinmin;Men Ying;Lu Jianxiu(Department of Chemistry,Shanxi University,Taiyuan)

机构地区：[1]山西大学化学系

出　　处：《高等学校化学学报》1984年第4期485-487,共3页Chemical Journal of Chinese Universities

摘　　要：藏红T[Safranin T(C.I.Basic Red2)]属于醌亚胺类对氮蒽碱性染料,虽已用于萃取光度法和萃取萤光光度法,但尚未见用于汞的测定.作者在研究和应用碘绿、乙基紫、酚藏花红和碱性品红等碱性染料作为汞的新显色剂基础上,应用藏红T作显色剂,建立了萃取分光光度法测定微量汞的新方法,并将此法用于岩矿中微量汞的测定.A new sensitive method for the determination of trace mercury is proposed.Mercury(Ⅱ)reacts with Safranine T(C.I.Basic Red 2;C.I.50240)to form a red complex in H2SO4 medium in the presence of NaRr.The association complex is readily extracted by non-aqueous solvents,e.g.mixture of cyclohexane-butanone(3+2)or butylacetate.The absorbance of the extract is measured at 528nm(ε=5.0×10^(4)-5.4×10^(4)1 mol^(-1)cm^(-1))vs.mixture of cyclohexanebutanone(3+2)or butylacetate.Beer’s law is obeyed for o-15,0-20μg Hg/10ml.This method may be used in the analysis of ores.

关 键 词：萃取光度法 藏红T 萃取分光光度法 酚藏花红 碱性品红 乙基紫 碱性染料 岩石矿物 

分 类 号：O65[理学—分析化学]