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Spectroscopic and fluorescence properties of Sm3+-doped zincfluorophosphate glassesV.B.Sreedhar1,2,Ch.Basavapoornima1,C.K.Jayasankar11. Department of Physics,Sri Venkateswara University摘 要:Optical absorption and fluorescence spectra of Sm3+-doped zincfluorophosphate glasses with molar composition of44P2O5+17K2O+9Al2O3+(30–x)ZnF2+xSm2O3(x=0.01 mol......
Micellar sensitized catalytic kinetic spectrophotometry for highly accurate and reproducible determination of Ⅴ(Ⅳ) and Ⅴ(Ⅴ)Ramazan Grkan,Can EmektasDepartment of Chemistry,Faculty of Sciences,University of Cumhuriyet摘 要:A highly accurate and reproducible micellar sensitized kinetic method was proposed for determination of V(VI). The method is based......
高碘酸盐光度法测定磷铁中锰王振坤1,陈焱2,李异1,王建1,姚传刚2,王虹2,张辉2,胡德新2,王昊云2(1.天津市天津出入境检验检疫局 化矿金属材料检测中心2.天津出入境检验检疫局 化矿金属检测中心,天津 300456)摘 要:采用硝酸,氢氟酸,硫磷混酸处理磷铁样品,高碘酸盐光度法测定磷铁中的锰.实验确定了溶样酸体系,优化选择了525 nm作为测定波长,探讨了酸度和共存元素的影响.结果表明,基体中的Fe和P对测定影响不大,硫酸(1+1),磷酸(1+1)加入量在20 mL以内时的干扰也可忽略不计.方法的检出限为......
硅钼蓝分光光度法测定三氧化二砷中二氧化硅谢辉1,赖心1,黄葡英1(1.广东省广州市广州有色金属研究院分析测试中心)摘 要:研究了在三氧化二砷中加入盐酸,加热除砷,所得残渣用氢氧化钠溶解,硝酸酸化后,以钼酸铵为显色剂,在pH 0.9条件下,硅与钼酸盐形成硅钼黄络合物,用硫酸提高酸度,以抗坏血酸为还原剂,使硅形成稳定的硅钼蓝络合物,采用分光光度法测定其中的二氧化硅含量.硅钼蓝络合物最大吸收波长位于813nm处.本法相对标准偏差(RSD)为1.6%~1.9%(n=6),测定结果与ICP-AES法的结果相一致.
; fluorescence property; fluorescence lifetime; Stokes shift; [全文内容正在添加中] ......
) Abstract:A new and practical fluorescence temperature detecting system based on fluorescence intensity ratio was proposed. The background theory of fluorescence intensity-ratio method was presented... of radiation at approximately 530 and 555 nm. The erbium-doped (960 ppm) fiber of length 20 cm and core diameter 3.2 μm was used as the sensing part. A silica photodiode transfers the fluorescence......
Gap-plasmon of Fe3O4@Ag Core-shell Nanostructures for Highly Enhanced Fluorescence Detection of Rhodamine B王运佳,俎喜红,易国斌,LUO Hongsheng,HUANG HailiangSchool of Chemical Engineering and Light Industry,Guangdong University of Technology摘 要:A novel gap-plasmon of Fe3O4@Ag core-shell nanoparticles for surface enhanced fluorescence detection of Rhodamine B(RB......
Fluorescence Detection for H2PO4- based on Carbon Dots/Fe3+ Composite范小春1,ZHANG Bingyu2,丁莉芸2,XU Chuang2,HUANG Jun21. School of Civil Engineering and Architecture,Wuhan University of Technology2... diffractometer, UV-Vis absorption spectrometer and fluorescence spectrophotometer. The carbon dots/Fe3+ composite was obtained by aqueous mixing of carbon dots and FeCl3, and its fluorescence property......
minerals flotation, zeta potential and pyrene fluorescence. The results of pure minerals flotation under condition of pH=2.0 show that the hydrophobicity of feldspar is stronger than that of quartz... close to 1:1, the mineral potentiodynamic has no obvious difference to itself in solution of pH 2.0, 2.5 and 9.0. The pyrene fluorescence results under condition of pH=2.0 show......
410114, China; 2. School of South Lake, Hunan Institute of Science and Technology, Yueyang 414000, China) Abstract: A new method based on fluorescence enhancement was designed for determination of primary amine. The polymer particles were prepared by copolymerization of phthalic aldehyde, allyl mercaptan and ethylene glycol dimethacrylate (EDMA) after heating. The fluorescence intensity......