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水杨基荧光酮

水杨基荧光酮的相关文献在1989年到2018年内共计163篇,主要集中在化学、预防医学、卫生学、金属学与金属工艺 等领域,其中期刊论文160篇、会议论文2篇、专利文献306524篇;相关期刊62种,包括沈阳理工大学学报、理化检验-化学分册、岩矿测试等; 相关会议2种,包括第十二届有机分析与生物分析学术研讨会、中国化学会第七届多元络合物应用学术会议等;水杨基荧光酮的相关文献由293位作者贡献,包括敖登高娃、赛音、李全民等。

水杨基荧光酮—发文量

期刊论文>

论文:160 占比:0.05%

会议论文>

论文:2 占比:0.00%

专利文献>

论文:306524 占比:99.95%

总计:306686篇

水杨基荧光酮—发文趋势图

水杨基荧光酮

-研究学者

  • 敖登高娃
  • 赛音
  • 李全民
  • 侯明
  • 余萍
  • 冯泳兰
  • 姚俊学
  • 崔新宇
  • 张东
  • 朱霞石
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 于秀兰; 郝登越
    • 摘要: Chromogenic system (niobium (Nb5+ )-hexadecyltrimethylammonium bromide (CTMAB )-arabic gum(AG)-salicylfluorone (SAF))for determining trace niobium was developed .The results show that in the presence of CTMAB and AG in the medium of 5 mol/L chloride acid ,Nb5+ reacts with SAF to give a orange-red complex whose the maximum adsorption wavelength is at 520 nm ,and the apparent molar absorptivity is 1 .38 × 105 L · mol-1 · cm -1 .Beer′s law is obeyed in the range of 0~0 .48 μg/mL for Nb5+ mass concentrate .%研究了用十六烷基三甲基溴化铵(CTMAB)-阿拉伯树胶(AG)-水杨基荧光酮(SAF)显色体系测定微量Nb5+.结果表明:在加入CTMAB和AG的5 mol/L盐酸介质中,Nb5+与水杨基荧光酮可形成最大吸收波长为520 nm的橘红色配合物,配合物的表观摩尔吸光系数为1.38×105 L·mol-1·cm-1,Nb5+质量浓度在0~0.48μg/m L范围内符合比尔定律.
    • 于连生; 李秀玲; 叶彩; 佟德成; 秦宇珊; 郭强; 宋笛; 吕玉光
    • 摘要: Using a practical preparation method,the average particle size of manufactured Ag-Ce-ZnO nanoscale composite materials is about 50nm.In order to solve the problem of the aggregation,it is treated by surfactant sodium polyacrylate (PAAS) nanoscale composites.After surfactant treatment,the average particle size of nanometer composite material is about 30nm.It is measured that surfactant PAAS hydroxyl radicals content influence on nanometer composites by the fluorescence spectrophotometry.To determination hydroxyl radicals in the new system,the hydroxyl radicals generated by oxidation of salicylfluorone is used.According as the fluorescence intensity of salicylfluorone variation,the amount of hydroxyl radical production can be measured indirectly.The experimental results showed that the addition of surfactant PAAS can reduce effectively the average particle size of nanometer composite material,increase the content of hydroxyl radicals,and make the nanometer composite materials lead to good dispersion.%采用成熟制备方法制备出平均粒径大约为50 nm左右的Ag-Ce-ZnO纳米复合材料,为了解决其团聚的问题,实验中采用表面活性剂聚丙烯酸钠(PAAS)处理纳米复合材料.经表面活性剂处理后的纳米复合材料平均粒径大约为30 nm左右,应用荧光光度法测定表面活性剂PAAS对纳米复合材料产生羟基自由基含量的影响.在测定羟自由基的新体系时利用其产生的羟基自由基氧化水杨基荧光酮,使水杨基荧光酮的荧光强度发生变化,从而间接地测定羟自由基的产生量.实验结果表明,表面活性剂PAAS的加入能够有效的减小纳米复合材料的平均粒径,增加其产生的羟基自由基含量,使纳米复合材料得到良好的分散.
    • 张威
    • 摘要: Aluminum-salicyl fluoronl-PVA-TWeen-60 coloured system was used to determine trace aluminum in polyethylene by spectrophotometry.In the course of the experiment,the measuring conditions were studied.The experiment results indicate that the absorbance of the complex at 560 nm is the maximum absorption wavelength.The molarabsorption coefficient is 0.845×105 L/(mol·cm),linear range is 1.0~5.0 μg/25 mL.The regression line equation is A= 0.08126×106 C +0.008637(C,mol/L).There are amount of trace elements in the samples , such as Ti4+、 Cr6+、Mn7+、Cu2+、Ni2+、Fe3+、Zn 2+ and V5+ ,which can interfere determination of aluminum in polyethyle.The sodium citrate can be used as masking agent to mask interfering ions during the course of determination.The recovery rate of synthetic sample is 100.2%~100.5%. The average recovery rate is 100.3%. The relative standard deviation is 0.3%.The recovery rate of samples of aluminum in polyethylene is 96.1%~102.5%. The average recovery rate is 100.1%.The relative standard deviation is 1.8%. This analysis method has the characteristics of high selectivity,accuracy and sensitivity. It is a rapid and efficient method to determine aluminum in polyethylene.%以Al-水杨基荧光酮-聚乙烯醇-土温-60为显色体系,用分光光度法测定聚乙烯中的微量铝。在实验的过程中需要对测量的条件进行考察。实验结果表明波长560 nm处产生最大吸收。铝量1.0~5.0μg/25 mL符合比尔定律,摩尔吸光系数ε=0.845×105 L/(mol·cm),得线性回归方程是A=0.08126×106 C +0.008637(C的单位mo1/L)。样品中存在多种微量元素,它们对聚乙烯中铝的测定存在干扰。用柠檬酸三钠作掩蔽剂,消除了干扰离子。人工合成样品的回收率在100.2%~100.5%,它们的平均回收率为100.3%,相对偏差为0.3%。对聚乙烯中铝含量进行测定回收率在96.1%~102.5%,平均加标回收率是100.1%,其相对偏差RSD为1.8%。本文所用的方法选择性好、准确度好、灵敏度高、实用性强。它是一种快速、有效测定聚乙烯中微量铝的方法并且在实际应用中具有一定的意义和价值。
    • 张锋; 张洪锋; 杨明非; 顾皞
    • 摘要: Fluorescence spectra and fluorescence quantum yield of Salicylfluorone(SAF)have been studied. Under the con-dition of pH10.0. There is an excellent linear relationship between fluorescence intensity and the concentration of SAF in pH=6.5 buffer solution.The linear range is 2.0×10-7-1.2×10-6 mol/L,and the detection limit is 5.2×10-9 mol/L. In alcoholic solutions,Stokes drift of SAF in-creases as blue shift occurs on molecular excitation wavelength and red shift occurs on emission wavelength.β-cyclodextrin can be used as an excellent sensitizer because fluorescence intensity of SAF is enhanced enormously by addingβ-CD. Rho-damine 6,G was used as a reference,and fluorescence quantum yield of SAF was measured by means of Williams gradient method. At the excitation wavelength 500,nm,the fluorescence quantum yield of SAF is 0.68.%研究了水杨基荧光酮(SAF)的荧光光谱和荧光量子产率,发现在pH 2.0以下,SAF无荧光,随pH升高,SAF由非荧光体转化为荧光体,荧光强度增强,在pH 6.0~7.0,SAF有稳定的强荧光,最大发射波长537,nm,最大激发波长507,nm.在碱性条件下,随pH升高,SAF荧光强度下降,当pH在10.0以上SAF无荧光.在pH=6.5的缓冲溶液中, SAF 稀水溶液的荧光强度与浓度之间存在良好的线性关系,线性范围为2.0×10-7~1.2×10-6,mol/L,检出限为5.2×10-9,mol/L.SAF 在醇溶液中,激发波长蓝移,发射峰红移,Stokes 位移增大.在稀水溶液中,β-环糊精对 SAF 的荧光强度有很强的增敏作用.以罗丹明6,G 为参比,使用 Williams 梯度法测量了 SAF 的荧光量子产率,在激发波长500,nm处的荧光量子产率为0.68.
    • 朱霞萍; 郭兵; 曾春霖
    • 摘要: 钼的加入会使水杨基荧光酮(SAF)的荧光发生猝灭,且猝灭的程度与钼的浓度呈线性关系,据此建立了钼原矿中低含量钼的测定方法.实验选用4.0 mL 1.0% OP和1.0%吐温-80体积比为0.8∶0.2的混合溶液进行增敏,加入2.0 mL 1.0×10-3 mol/L SAF溶液,2.0mL 0.1 mol/L HCl,在常温下反应30 min后于λexAem=460/520 nm处测定荧光发射强度,结果表明,钼(Ⅵ)浓度在0.013~0.20 μg/mL范围之内与ΔF呈线性关系,线性方程为ΔF=2 865.0ρ-10.667,相关系数(R2)为0.998 8,方法检出限为0.013 μg/mL.方法应用于测定钼原矿企业管理样中低含量的钼,结果与参考值一致,相对标准偏差为1.1%~1.8%,回收率为93%~113%.
    • 于秀兰; 郝登越
    • 摘要: 根据大学化学实验教学的现状和特点,结合多年来的科研经验,设计了一个大学化学综合实验:水杨基荧光酮-十六烷基三甲基溴化铵-钼的分光光度法.本实验通过有机化学、物理化学及分析化学某些知识点的相互渗透及交叉,提高学生的创新与综合实验能力,以利于培养出符合现代企业需求的高素质的化工类人才.
    • 于秀兰; 郝登越
    • 摘要: 研究了水杨基荧光酮在混合表面活性剂CTMAB和OP存在下与Mo(Ⅵ)的显色反应.结果表明,在5mol/L盐酸溶液中,钼与水杨基荧光酮在混合表面活性剂CTMAB和OP存在下,形成橙色配合物,最大吸收波长为525 nm,配合物的表观摩尔吸光系数为1.55×105 L/(mol·cm),钼的质量浓度在0~0.5 μg/mL符合比尔定律.应用于中低合金钢标样中微量Mo(Ⅵ)的测定,结果令人满意.
    • 崔新宇; 叶虹婷; 齐悦; 李淼晶
    • 摘要: 对表面活性剂(SF)与羟丙基-β-环糊精(HP-β-CD)共存时水杨基荧光酮(SAF)荧光体系的反应机理进行了研究.结果表明:SF的加入使SAF溶液的荧光有不同程度的增强,其中非离子型SF(如Triton X-100及OP)的增敏作用明显高于离子型SF,推断其原因为SF分子中的醚氧基与SAF分子中的羟基间形成氢键所致.而当SF与HP-β-CD共存时,SAF的荧光增强更明显,而且也是以非离子型SF与HP-β-CD共存时增敏更高.其原因除了上述氢键的形成之外,SAF的苯基由于邻位羟基使其亲水性增强可被HP-β-CD的空腔所包络,而SF的烷基链进入空腔受到限制,刚性增强,导致荧光量子产率提高.
    • 龚爱琴; 朱霞石
    • 摘要: 目的:建立一种测定依巴斯汀含量的新方法.方法:用光谱法研究依巴斯汀、水杨基荧光酮及1-丁基-3-甲基咪唑四氟硼酸盐(C4)间的相互作用.利用在pH6.5的醋酸缓冲体系中,依巴斯汀与水杨基荧光酮反应能形成稳定的化合物,且C4离子液体对其具有增敏作用,该物质在560 nm波长处有最大吸收,且其吸光度与依巴斯汀浓度在一定范围内存在定量关系,建立了测定依巴斯汀含量的新方法.结果:在优化条件下,线性方程为:A =0.029 +0.005C(C,μg·mL-1),r=0.9995,检出限为0.96 μg·mL-1(S/N=3),线性范围为2.5~ 20.0μg·mL-1,回收率为96.1%~106.4%.结论:本法快速准确,简便易行,适用于依巴斯汀片中依巴斯汀含量的测定.%Objective:To establish a method for the determination of ebastine (EBS).Method:The interaction of EBS,salicyl fluorine (SAF) and 1-butyl-3-methylimidazolium tetrafluoroborate (C4) was studied by spectrophotometry.It showed a steady compound was formed through the interaction of EBS and SAF in the acetic acid buffer system (pH =6.5) and the interaction could be sensitized by C4.The compound had a maximum absorption at 560 nm and there was a good linear relationship between the absorbance of the compound and a certain concentration range of ebastine concentration.Results:The equation of calibration curve was A =0.029 + 0.005 C (C ∶ μg · mL-1).The range of calibration curve was between 2.5 and 20.0 μg · mL-1 (r =0.9995) and the detection limit was 0.96 μg · mL-1 (S/N =3).The recovery was 96.1%-106.4%.Conclusion:The method is simple,rapid with good accuracy for determining ebastine.
    • 崔新宇; 王栋; 姚立岩; 李晓霞; 杨凤华
    • 摘要: 研究了在羟丙基-β-环糊精(HP-β-CD)和乳化剂(OP)存在下,在NaAc-HAc介质中,以水杨基荧光酮(SAF)作为荧光试剂,用荧光熄灭法测定痕量铝的新方法;体系的最大激发波长和发射波长分别为365nm和522nm,25mL溶液中,Al(Ⅲ)含量在0.028-4.0μg/25mL范围内符合线性关系,方法检出限为1.11μg/L.干扰离子较少,已用于自来水中痕量铝的测定,结果令人满意.
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