双波长分光光度法同时测定贵金属钯和锇  

Simultaneouse Determination of Trace Palladiumand Osmium with p-Hydroxyphenylfluoruone by Du-al-Wavelength Spectrophotometry

作　　者：赵力[1] 胡守坤[1] 

机构地区：[1]成都中医学院,四川大学化学系

出　　处：《分析试验室》1994年第2期28-30,共3页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金

摘　　要：本文提出了在对羟基苯基荧光酮和溴化十六烷基三甲胺存在下，双波长分光光度法同时测定微量钯和锇的新方法，在ｐＨ＝７．６～８．０的磷酸盐介质中，钯和锇的对羟基苯基荧光酮－ＣＴＭＡＢ配合物吸收光谱相互重叠，选择测定钯配合物的波长对为５８０．５ｎｍ与５３０．５ｎｍ，测定锇配合物的波长对为５５３．５ｎｍ与６０４．５ｎｍ，钯含量在０～７．０μｇ／１０ｍＬ范围内，锇含量在０～９．０μｇ／ｍＬ范围内，与△Ａ值呈线性关系。将所拟定的方法用于催化剂三氧化二铝及活性炭中纪和锇标样的测定，与ＩＣＰ－ＡＥＳ方法比较，结果满意。A methed of dual-wavelength spectrophotometryfor simultaneous qudntiative determination of tracepalladium and osmium has been developed,At pH7.6～8.0 , the absorption spectra of complexes of Os(Ⅳ)-p-hydroxyphenylfluorone-CTMAB and Pd(Ⅱ)-p-hydroxyphenylfluorone-CTMAB are overlappedeach other.The measuring wavelength and referencewavelength are 580.5nm and 530.5nm for Pd,553.5nm and 604. 5nm for Os respectively. The calibra-tion curves are linear in the range of 0 to 7.0μg/10mL for Pd and 0 to 9.0μg/10mL for Os.Thismethod is simple and rapid for simultaneous determi-nation of Pd and Os in samples with satisfactory re-sults.

关 键 词：钯 锇 对羟基 苯荧光酮 分光光度法 

分 类 号：O614.823[理学—无机化学]