荧光分析法测定金属铝箔中的微量镓

Ga~(3+)与Al~(3+)两者离子半径相近,化学性质类似,因此镓是金属铝中常见的杂质之一。荧光法是金属铝中微量镓测定的常用方法。应用表面活性剂的,见于镓-荧光镓(或其同系物)测定体系。8羟基喹啉(Oxine)曾用于硅酸岩中微量镓的萃取-荧光测定。本文研究了Ga~(3+)-Oxine-表面活性剂体系荧光测定的合适条件,并应用于金属铝箔中微量镓的测定

The Dependence of The SERS Intensities on The potential

SErS谱峰强度随电位的变化顾仁敖，吴芸，乔专虹（苏州大学化学系215006）田中群，李五湖（厦门大学化学系361005）THEdEPEndEnCEOfTHESErSInTEnSITIESOnTHEPOTEnTIAl￥gurEnAO；WuyunAnd..

The Response Rate of The SERS Intensity When A Potential Step is Applied

SErS谱峰强度对电位阶跃的响应速率顾仁敖，吴芸，乔专虹，姚建林（苏州大学化学系苏州215006）田中群，李五湖（厦门大学化学系厦门361005）THErESPOnSErATEOfTHESErSInTEnSITyWHEnAPOTEnTIAlSTEPI...Abstract Time-resolved surFace-enhanced Raman spectroscopy（TRSERS）has been combined with the potential step method to study thiourea and ClO coadsorbed at Ag electrodes.When a potential is applied， the response rate of the SERS intensity depends on the potential being stepped the stepping direc-tion, the concentration of TU and the diFFerent SERS band

The Dependence of The SERS Intensities Rate on The Potential

SErS谱峰强度比与电位的关系顾仁敖，吴芸，乔专虹，姚建林（苏州大学化学系215006）田中群，李五湖（厦门大学化学系361005）THEdEPEndEnCEOfTHESErSInTEnSITIESrATEOnTHEPOTEnTIAl￥gurEnAO...Abstract Time-resolved surFace－enhanced Raman spectroscopy （ TRSERS）has been combined with the potental step inethod to study thiourea and ClO coadsorbed at Ag electrodes.When the potential changed， iF the ratio of two SERS bands intensities were stable， the two bands must have some common properties.The two bands at 932cm--(-1) and 1094cm--(-1) have similar properties

Electrochemical synthesis of zinc complexes and preparation of nano-sized ZnO

Zinc complexes were directly prepared by using zinc metal as sacrificing anode in a cell without separating the cathode and anode spaces. The products were characterized by using FT-IR, NMR and Raman spectroscopy. The influence of temperature and conductive additives on product yield was also investigated. The study shows that direct electrochemical preparation of zinc complexes such as Zn(acac)(2), Zn(OEt)(2) (acac)(2) and Zn(OBu)(2)(acac)(2) has high current efficiency and electrolysis yield than that of Zn(OR)(2). Furthermore, these zinc complexes have high purity and can be directly used as sol-gel precursor for preparation of nanometer ZnO. Experimental results show that controlling temperature in the range of 50 similar to 60 degreesC, selecting R4NBr as conductive additives and preventing zinc anode from being covered by electrochemical products can improve product yield. The study also shows that nano-sized ZnO prepared by this method has monoclinic structure with a narrow size distribution of 5-10 nm