1-(2′-苯并噻唑)-3-(4′-羧基苯)三氮烯固相萃取分光光度法测定钯  被引量:5

Solid phase extraction and spectrophotometric determination of palladium with 1-(2′-benzothiazole)-3-(4′-carboxylbenzene)triazene

在线阅读下载全文

作  者:黄章杰[1] 黄锋[1] 谢琦莹[1] 

机构地区:[1]云南大学化学系

出  处:《分析试验室》2008年第2期58-61,共4页Chinese Journal of Analysis Laboratory

基  金:云南省自然科学基金重点(2005E0003Z);云南省教育厅科学研究基金(5Z0103A)项目资助

摘  要:根据新试剂1-(2′-苯并噻唑)-3-(4′-羧基苯)三氮烯(BTCBT)与钯的显色反应及C8固相萃取小柱对显色络舍物的固相萃取,建立了一种测定痕量钯的新方法,在pH为5.0~6.3的柠檬酸氢二钠-NaOH缓冲介质中,在乳化剂OP和SDBS存在下,钯与BTCBT发生反应形成1:2的稳定络合物,该络合物可用C8固相萃取小柱富集,小柱上富集的络舍物用乙醇洗脱后用分光光度法测定.在富集后的测定液中,络合物最大吸收波长为490nm,摩尔吸光系数ε=1.16×10^5L·mol^-1·cm^-1,pd^2+量在0.1~1.2μg/mL内符合比尔定律,方法适用于测定催化剂中的钯。Based on the color reaction of 1-(2′-benzothiazole)-3-(4′-carboxylbenzene) triazene(BTCBT) with palladi- ran( Ⅱ ) and the solid phase extraction of its colored complex with C8 cartridge, a new method for the determination of palladium was studied. In the presence of OP-SDBS and C3H5 (COO)3HNa2-NaOH buffer solution (pH 5.0- 6.3) medium. BTCBT reacts with palladium( Ⅱ ) to form a stable 2 : 1 complex. The colored complex was extracted by C8 cartridge and the retained chelate was a eluted from cartridge with ethanol, then can be determined by spectrophotometry at 490 nm. Beer's law is obeyed in range of 0.1 - 1.2 μg/mL and ε is 1.16 × 10^5 L·mol^-1·cm^-1 . The method was applied to determination of the trace palladium in the C-Pd catalysts with a satisfactory result.

关 键 词:1-(2′-苯并噻唑)-3-(4′-羧基苯)三氮烯 固相萃取 Pd 

分 类 号:O657.32[理学—分析化学]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象