检索结果-南通市图书馆

The interaction between furosemide-palladium (Ⅱ) chelate and basic triphenylmethane dyes by resonance Rayleigh scattering spectra and resonance non-linear scattering spectra and their analytical applications

引用

Science China Chemistry 2010年第8期53卷 1767-1777页

作者： li cuixia,liu shaopu,liu zhongfang & hu xiaoli key laboratory on luminescence and real-time analysis,ministry of education School of Chemistry and Chemical Engineering,Southwest University,Chongqing 400715,China key laboratory on luminescence and real-time analysis Ministry of Education School of Chemistry and Chemical Engineering Southwest University Chongqing China

In pH 4.5-7.0 Britton-Robinson buffer solution,furosemide (FUR) reacted with Pd (II) to form a 1:1 anionic *** chelate could further react with such basic triphenylmethane dyes (BTPMD) as ethyl violet (EV),crystal violet (CV),methyl violet (MV),methyl green (MeG) and brilliant green (BG) to form 1:1 ion-association *** not only resulted in the change of absorption spectra,but also led to the significant enhancement of resonance Rayleigh scattering (RRS),second-order scattering (SOS) and frequency doubling scattering (FDS).The maximum RRS wavelengths were located at 324 nm for the EV,CV and MV system,and 340 nm for the BG and MeG *** maximum SOS wavelengths were located at 550 nm for the EV,CV,BG and MeG system,and 530 nm for the MV *** maximum scattering peaks of all the systems were at 392 nm for *** enhanced RRS,SOS and FDS intensities were directly proportional to the concentration of *** detection limits for the different dye systems were 0.3-4.9 ng mL-1 for the RRS method,3.2-33.1 ng mL-1 for the SOS method and 9.0-85.7 ng mL-1 for the FDS *** methods could be used for the determination of trace amounts of *** effects of the formation of ternary ion-association complexes on the spectral characteristics and intensities of absorption,RRS,SOS and FDS have been *** optimum conditions of these reactions,the influencing factors and the analytical properties have been *** influences of coexisting substances were tested by RRS method and the results showed that this method exhibited a high *** on the aforementioned research,the highly sensitive,simple and rapid methods for the determination of trace amounts of FUR by resonance light scattering technique have been established,which could be applied to the determination of FUR in tablet,injection,human serum and urine *** composition and structure of the ternary ion-association complex and the reaction mechanism were discusse

关键词： furosemide basic triphenylmethane dyes palladium (Ⅱ) resonance Rayleigh scattering resonance non-linear scattering

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Tungstate ion resonance Rayleigh scattering method for determination of basic triphenylmethane dyes

引用

Chinese Science Bulletin 2010年第8期55卷 693-700页

作者： YU liHong,liu zhongfang,hu xiaoli,KONG ling & liu shaopu School of Chemistry and Chemical Engineering key laboratory on luminescence and real-time analysis,ministry of education,Southwest University,Chongqing 400715,China School of Chemistry and Chemical Engineering key laboratory on luminescence and real-time analysis Ministry of Education Southwest University Chongqing China

In a pH 4.2-6.0 HAc-NaAc buffer medium,the resonance Rayleigh scattering intensities of separate basic triphenylmethane dyes,such as methyl violet (MV),ethyl violet (EV),crystal violet (CV),methyl green (MeG),iodine green (IG),malachite green (MG),light green (LG),and tungstate ion solution,are very weak,but when these cationic dyes react with the tungstate ion (WO 42-) to form ion-association complexes,their RRS are enhanced sharply and new RRS spectra *** reaction products of methyl violet,ethyl violet,and crystal violet with WO 42-have similar spectral characteristics and there are two strong RRS peaks at 330 nm and 560 *** reaction products of methyl green,iodine green,malachite green,light green with WO 42-have similar spectral characteristics and there are three RRS peaks at about 335 nm,450 nm and 580 *** sensitivities of seven kinds of reaction products show a sequence of malachite green>light green>crystal violet>ethyl violet>methyl green>iodine green>methyl *** linear ranges and detection limits of the above seven systems are 0.06-2.78 μg mL-1 and 18.1 ng mL-1 (MG),0.08-4.83 μg mL-1 and 22.6 ng mL-1 (BG),0.10-4.90 μg mL-1 and 31.4 ng mL-1 (CV),0.14-2.95 μg mL-1 and 40.5 ng mL-1 (EV),0.17-3.70 μg mL-1 and 50.2 ng mL-1 (MeG),0.22-5.70 μg mL-1 and 67.1 ng mL-1 (IG),and 0.25-7.30 μg mL-1 and 76.3 ng mL-1 (MV).A sensitive,simple and fast RRS method for the determination of basic triphenylmethane dyes using the tungstate ion as the probe has been *** method is applicable to the determination of malachite green residues in fish flesh.

关键词：三苯甲烷光谱法钨离子染料测定散射瑞利共振

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Study on the interaction between palladium(II)-chlorpromazine hydrochloride and sodium tungstate by the resonance Rayleigh scattering, second-order scattering and frequency doubling scattering spectra and its analytical application

引用

Science China Chemistry 2011年第3期54卷 506-514页

作者： CHEN Peili liu shaopu liu zhongfang hu xiaoli li cuixia key laboratory on luminescence and real-time analysis Ministry of EducationSchool of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China

The interaction between palladium(II)-chlorpromazine hydrochloride and sodium tungstate was investigated by ultravioletvisible absorption,resonance Rayleigh scattering(RRS),second-order scattering(SOS)and frequency doubling scattering (FDS)*** pH 5.3 Britton-Robinson(BR)buffer medium,chlorpromazine hydrochloride(CPZ)reacted with Pd(II) to form 2:1 cationic chelate,which further reacted with Na2WO4 to form a 1:1 ternary ion-association complex ([Pd(CPZ)2]·WO4).As a result,the signal intensities of RRS,SOS and FDS were enhanced greatly,and the enhancements of scattering were proportional to the CPZ concentration in a certain *** maximum wavelengths were located at 310 nm, 570 nm and 391 nm,respectively and the detection limits(3)were 1.6 ng/mL(RRS method),3.2 ng/mL(SOS method)and 5.6 ng/mL(FDS method).The optimum reaction conditions,the influences of coexisting substances and analytical application were mainly investigated by RRS method due to its highest sensitivity.A highly sensitive,simple,rapid and new method had been proposed to determine CPZ in the pharmaceutical form and residue of CPZ in *** addition,the Gibbs free energy change(△Gf)of ion-association reaction was computed by using B3LYP/3-21g*/LanL2dz *** formation of ion-association and the reasons for the enhancement of RRS were also discussed.

关键词： resonance Rayleigh scattering second-order scattering frequency doubling scattering chlorpromazine hydrochloride palladium(II) Na2WO4

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

秋水仙碱水解产物与某些酸性磺酞类染料相互作用的共振瑞利散射光谱及其分析应用

引用

化学学报 2009年第14期67卷 1635-1642页

作者：江珊珊刘忠芳胡小莉刘绍璞王剑西南大学化学化工学院发光与实时分析教育部重点实验室重庆400715

在pH2.9～4.6 Britton-Robinson(BR)缓冲溶液中,秋水仙碱的水解产物(H-COL)能与溴酚蓝(BPB)、溴甲酚绿(BCG)、溴百里酚蓝(BTB)和百里酚蓝(TB)等酸性磺酞类染料(ASPD)反应形成1∶1的离子缔合物,此时将引起共振瑞利散射(RRS)的急剧增强,... 详细信息

在pH2.9～4.6 Britton-Robinson(BR)缓冲溶液中,秋水仙碱的水解产物(H-COL)能与溴酚蓝(BPB)、溴甲酚绿(BCG)、溴百里酚蓝(BTB)和百里酚蓝(TB)等酸性磺酞类染料(ASPD)反应形成1∶1的离子缔合物,此时将引起共振瑞利散射(RRS)的急剧增强,并产生新的RRS光谱.秋水仙碱水解产物与溴酚蓝、溴甲酚绿、溴百里酚蓝和百里酚蓝形成离子缔合物的最大散射波长分别位于327,311,305和306nm处.散射增强(ΔI)与秋水仙碱浓度在一定范围内成正比,不同体系对于秋水仙碱的检出限(3σ)分别为12.3,15.1,16.4和20.0ng·mL-1(TB).研究了适宜的反应条件,考察了共存物质的影响,表明方法有较好的选择性.基于秋水仙碱水解产物与酸性磺酞类染料离子缔合物的反应,发展了一种较灵敏,且简便、快捷测定秋水仙碱的新方法.方法用于片剂、黄花、血清和尿样中秋水仙碱的测定,获得了满意的结果.

关键词：共振瑞利散射秋水仙碱酸性磺酞类染料

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

某些芳香族氨基酸作探针荧光猝灭法测定秋水仙碱

引用

化学学报 2010年第22期68卷 2325-2330页

作者：江珊珊刘忠芳胡小莉刘绍璞许倩影田伦富发光与实时分析教育部重点实验室西南大学化学化工学院重庆400715 国家城市供水水质检测网重庆监测站重庆400013

在适当的酸性介质中,秋水仙碱(COL)能与色氨酸(Trp)、酪氨酸(Tyr)和苯丙氨酸(Phe)等芳香族氨基酸反应并形成结合产物,此时将引起上述氨基酸的荧光发生猝灭,最大猝灭波长分别位于350nm(Trp),304nm(Tyr),284nm(Phe).其荧光猝灭值(ΔF)在... 详细信息

在适当的酸性介质中,秋水仙碱(COL)能与色氨酸(Trp)、酪氨酸(Tyr)和苯丙氨酸(Phe)等芳香族氨基酸反应并形成结合产物,此时将引起上述氨基酸的荧光发生猝灭,最大猝灭波长分别位于350nm(Trp),304nm(Tyr),284nm(Phe).其荧光猝灭值(ΔF)在一定范围内与秋水仙碱成正比.当用Trp和Tyr作探针时,荧光猝灭法测定秋水仙碱具有高灵敏度,其检出限分别为15.1ng/mL(3.78×10-8mol/L)和19.8ng/mL(4.96×10-8mol/L).文中研究了适宜的反应条件和影响因素,考察了共存物质的影响,表明方法有良好的选择性,可用于秋水仙碱的测定.文中讨论了复合物的组成、结合力和结合模式.通过温度的影响以及Stern-Volmer作图,判断该反应为静态猝灭反应,它们的结合常数(K)在25℃时分别为9.7×106(COL-Trp),8.9×106(COL-Tyr)和6.3×105(COL-Phe).其作用力主要是芳基堆集作用和氢键结合作用,而芳基堆集作用是发生荧光猝灭的主要原因.

关键词：秋水仙碱色氨酸酪氨酸苯丙氨酸荧光猝灭

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

某些芳香族氨基酸作探针荧光猝灭法测定安乃近及其代谢产物

引用

化学学报 2012年第1期70卷 58-64页

作者：甘晓娟刘绍璞刘忠芳王亚琼崔志平胡小莉发光与实时分析教育部重点实验室、西南大学化学化工学院重庆400715

在pH 3.2的缓冲介质中,安乃近(ANG)及其代谢产物4-甲氨基安替比林(MAA)、4-乙酰氨基安替比林(AAA)与色氨酸(Trp)、酪氨酸(Tyr)和苯丙氨酸(Phe)等芳香族氨基酸反应并形成结合产物,引起上述氨基酸的荧光发生猝灭,最大猝灭波长分别位于352 ... 详细信息

在pH 3.2的缓冲介质中,安乃近(ANG)及其代谢产物4-甲氨基安替比林(MAA)、4-乙酰氨基安替比林(AAA)与色氨酸(Trp)、酪氨酸(Tyr)和苯丙氨酸(Phe)等芳香族氨基酸反应并形成结合产物,引起上述氨基酸的荧光发生猝灭,最大猝灭波长分别位于352 nm(ANG-Trp体系)、304 nm(ANG-Tyr,MAA-Tyr和AAA-Tyr体系)和284 nm(ANG-Phe体系).其荧光猝灭值(ΔF)在一定范围内与ANG,MAA和AAA成正比.荧光猝灭反应具有较高灵敏度,对于ANG,MAA和AAA的检出限为13.3 ng/mL(ANG-Trp体系)、15.8 ng/mL(ANG-Tyr体系)、64.5 ng/mL(ANG-Phe体系)、150.0 ng/mL(MAA-Tyr体系)和230.8 ng/mL(AAA-Tyr体系).实验研究了荧光猝灭反应的适宜条件和影响因素,考察了共存物质的影响,表明方法具有良好的选择性,可用于ANG片剂及其代谢物尿药浓度的快速测定.从吸收光谱的变化、温度的影响以及Stern-Volmer作图,判断该反应为静态猝灭反应,氨基酸和安乃近通过静电引力和芳基堆积作用而形成1∶1的复合物.

关键词：安乃近氨基酸 4-甲氨基安替比林 4-乙酰氨基安替比林荧光猝灭

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：