您现在的位置: 首页> 研究主题> 丁基罗丹明B

丁基罗丹明B

丁基罗丹明B的相关文献在1983年到2022年内共计116篇,主要集中在化学、轻工业、手工业、化学工业 等领域,其中期刊论文112篇、会议论文3篇、专利文献11822篇;相关期刊54种,包括岩矿测试、冶金分析、分析测试学报等; 相关会议3种,包括全国第十五届大环化学学术讨论会暨全国第七届超分子化学学术讨论会、中国化学会第九届分析化学年会暨全国原子光谱学术会议、中国化学会第七届分析化学年会暨原子光谱学术会议等;丁基罗丹明B的相关文献由231位作者贡献,包括徐其亨、李祖碧、王加林等。

丁基罗丹明B—发文量

期刊论文>

论文:112 占比:0.94%

会议论文>

论文:3 占比:0.03%

专利文献>

论文:11822 占比:99.04%

总计:11937篇

丁基罗丹明B—发文趋势图

丁基罗丹明B

-研究学者

  • 徐其亨
  • 李祖碧
  • 王加林
  • 曹秋娥
  • 李崇宁
  • 张爱梅
  • 冯素玲
  • 刘保生
  • 刘玫
  • 李立新
  • 期刊论文
  • 会议论文
  • 专利文献

搜索

排序:

年份

    • 王蕊; 王筠; 徐梦恬; 闫峻
    • 摘要: 部分具有毒性与致癌性的罗丹明染料被违法用于食品中,危害人们的生命健康,需要研究有效的处理方法用于此类染料的检测。磁性碳纳米管具有可磁性分离、比表面积大的优点,选择磁性碳纳米管作预处理材料可以增大吸附剂的吸附容量、提高吸附分离效率。本工作采用改进溶剂热法合成了磁性碳纳米管,并将其用于水溶液中丁基罗丹明B(BRB)染料的吸附。使用透射电子显微镜对磁性碳纳米管的形貌进行了表征,结果显示碳纳米管与四氧化三铁纳米粒子均匀分布。吸附实验表明,吸附容量随pH值的增大而略有增大,当吸附剂加入量为0.50 mg·mL^(-1)时吸附容量最高。动力学吸附实验表明,吸附在45 min后达到平衡,吸附更符合准二阶动力学模型。热力学吸附实验表明,BRB初始浓度为50μg·mL^(-1)时吸附量到达最高水平,吸附过程更符合Langmuir模型。上述实验结果表明,磁性碳纳米管对BRB具有较好的吸附性能,磁性碳纳米管可应用于水溶液中BRB的吸附。
    • 赵文林; 邹自力; 宋佳宝; 翟好英
    • 摘要: 在酸性介质中,2种罗丹明染料[罗丹明6G(Rh6G)和丁基罗丹明B(b-RhB)]可通过静电引力作用与肝素钠(Hep)形成离子缔合物,使2种体系(Hep-Rh6G和Hep-b-RhB)的共振散射信号增强,且增强程度(ΔI)与Hep的质量浓度在定范围内呈线性关系,据此建立了罗丹明染料共振散射光谱法测定Hep含量的方法.试验优化了Hep-Rh6G和Hep-b-RhB体系的分析条件:试剂的加入顺序为罗丹明染料、Hep和缓冲溶液;Hep-Rh6G体系的反应介质为三(羟甲基)氨基甲烷(Tris)-HCl缓冲溶液(pH 5.0),其用量为0.50 mL,1.0×10-3 mol?L-1 Rh6G溶液的用量为0.50 mL,分析波长为377 nm;Hep-b-RhB体系的反应介质为Britton-Robinson(B-R)缓冲溶液(pH 5.5),用量为0.50 mL,1.0×10-3 mol?L-1 b-RhB溶液的用量为0.80 mL,分析波长为380 nm.结果表明:Hep-Rh6G和Hep-b-RhB等2种体系的线性范围分别为0.020~2.0 mg?L-1和0.10~1.6 mg?L-1,检出限(3s/k)分别为1.10,3.47μg?L-1,可见Hep-Rh6G体系的线性范围更宽,检出限更低.因此,采用Hep-Rh6G体系对2个批次的Hep注射液进行了分析,加标回收率分别为96.0%,101%;测定值的相对标准偏差(n=5)分别为4.9%,3.9%.
    • 李建晴; 武世斌; 王翠
    • 摘要: 文章利用1-(4-苯甲酰基)-1H-苯并咪唑-5,6-二乙酸(H3cbic)做配体,和金属Cd2+合成Cd配合物具有较好吸附性的特性,对罗丹明B、健那绿、丁基罗丹明B、丽春红四种染料进行降解实验研究.通过测量H3 cbic-Cd配合物与四种染料作用不同时间后染料吸光度的变化,研究了H3 cbic-Cd配合物对四种染料的降解效率.同时对配合物与四种染料的吸附能力、吸附效率做了比较,结果表明:配合物降解效果较好的染料是丁基罗丹明B和健那绿,对罗丹明B的降解作用不明显,对丽春红染料降解作用不明显.
    • 林明卉; 李志林; 敬东阳
    • 摘要: 基于Ni2+在高氯酸介质中与钨酸根和丁基罗丹明B形成离子缔合物的反应,建立了一个简单、快速、操作方便、灵敏度极高的测定Ni2+的光度分析方法.在优化后的反应与检测条件下,该方法在565 nm处对Ni2的检测范围为1.0 ~24.0g/L,摩尔吸光系数为3.63×106 L/(mol.cm),检出限为0.22 μg/L.除Ir(Ⅲ)、Rh(Ⅲ)和Au(Ⅲ)外,大部分其它金属离子不干扰测定.在用氨水简单沉淀了铝合金中的基体元素铝以后,用该方法能准确测定铝合金中镍的含量,测定结果的相对标准偏差在3.5%以内.
    • 孙赛兰; 何叶; 黎春兰; 祖力甫哈尔·亚科甫; 李佑稷; 覃事栋
    • 摘要: Zn(Ⅱ)与KSCN和丁基罗丹明B形成稳定的三元离子缔合物,研究了其在由乙醇和磷酸氢二钾组成的双水相体系中的最佳分配条件.实验表明,在pH 4.0的HAc-NaAc缓冲溶液中,Zn(SCN)42-与丁基罗丹明B形成的缔合物(BRhB)2[Zn(SCN)4]的最大吸收波长为559 nm,锌(Ⅱ)在0.02~0.30μg/mL范围内符合比尔定律,其相关系数为0.9996,表观摩尔吸光系数ε为3.4×105 L/(mol·cm).该方法具有处理时间短、操作过程简便优点,结果与原子吸收法结果一致.%A stable ternary ion-associating complex was formed by Zn2+,KSCN and butyl Rhodamine B, which was studied between ethanol and dipotassium phosphate complex in aqueous two-phase systems. The experiment showed that the ion association complex (BRhB)2[Zn(SCN)4]formed by Zn2+,KSCN and butyl Rhodamine B at pH 4.0 of HAc-NaAc buffer solution,and the maximum absorption wavelength was located at 559 nm.Under this condition,Beer's law was obeyed for the amount of Zn2+at the range of 0.02~0.3 μg/mL,and the linear correlation coefficient was 0.9996,the apparent molar absorptivity (ε)was 3.4 ×105 L/(mol·cm),respectively.The method have some advantages such as short dispose time and easily operating,which is a environmentally-friendly method.The results were in good agreement with values measured by atomic absorption spectrometry.
    • 翟好英; 李琼
    • 摘要: 在酸性介质中,当用280 nm的光激发时,罗丹明类染料丁基罗丹明B和罗丹明6G分别在590和560 nm处产生1个较强的荧光峰.加入抗坏血酸后,由于丁基罗丹明B和罗丹明6G分别在静电引力作用下与抗坏血酸形成离子缔合物,从而使体系的荧光猝灭.在优化实验条件下,在1.00-26.0μg/mL(丁基罗丹明B体系)或2.00-20.0μg/mL(罗丹明6G体系)范围内,体系的荧光强度△F与抗坏血酸浓度之间均呈良好的线性关系,其检出限为分别为0.916或0.0563μg/mL.该方法简单快速,且选择性好,可直接用于维生素C药片中抗坏血酸含量的测定.
    • 杜凌云; 朱琳; 王术皓
    • 摘要: In 0.4 mmol · L-1 B-R buffer medium of pH 4.1,butyl-rhodamine B (BRMB) was rapidly oxidized by hydroxyl free radical produced by the reaction between Fe(Ⅱ) and H2O2,leading to significant decrease of fluorescence intensity of BRMB.When diethylstilbestrol (DES) was present in the above reaction system,due to the elimination action of DES toward OH free radical,the magnitude of decrease of fluorescence intensity was decreased,and values of fluorescence difference (△F =F-F0) were found to keep linear relationship with mass concentration of DES in the range of 0.1-50 μg · L-1.Based on these facts,a method of fluorophotometric determination of DES was proposed.Optimum conditions for this reaction were found as follows:① mass concn.of BRMB:2.0 mg · L-1 ; ② concn.of FeSO4:0.05 mmol · L-1 ; ③ concn.of H2O2:(ψ) 0.000 3% and ④ time of reaction:6 min.Detection limit (3s/k) of the method was found to be 0.045 μg · L-1.Test for recovery was made by standard addition method,giving results in the range of 91.0 %-106 %,with values of RSD's (n=5) less than%在0.4 mmol·L-1 B-R缓冲介质(pH 4.1)中,丁基罗丹明B(BRMB)被Fe(Ⅱ)与H2O2反应所产生的羟自由基迅速氧化而导致其产生的荧光强度明显减弱.当有己烯雌酚(DES)存在时,由于其对羟自由基有清除作用,而使上述反应体系的荧光减弱程度降低,即对BRMB-Fe(Ⅱ)-H2O2反应体系有抑制作用,而且反应体系的△F值(F-F0)与DES的质量浓度在0.1~50 μg·L-1范围内呈线性关系.据此提出了测定DES的荧光光度法.反应体系的最佳条件如下:①BRMB的质量浓度:2.0 mg·L-1;②硫酸亚铁的浓度:0.05 mmol·L-1;③过氧化氢浓度:(ψ)0.000 3%及④反应时间:6 min.方法的检出限(3s/k)为0.045 μg·L-1.以水样作基体,做加标回收试验,测得回收率在91.0%~106%之间,测定值的相对标准偏差(n=5)均小于5%.
    • 杨运琼; 徐丽
    • 摘要: 在磷酸介质中,BrO3-氧化I-形成I3-络阴离子,I3-络阴离子可进一步与丁基罗丹明B阳离子形成离子缔合物,在聚乙烯醇存在下,缔合物呈清亮的紫色溶液,以试剂空白为参比,最大吸收波长位于587nm,吸光度A与BrO3-浓度呈线性关系.线性范围0.20 ~3.50μg/10mL,表观摩尔吸光系数为9.79×104L·mol-1· cm-1,检出限为0.012μg·mL-1,样品回收率94.0%~100.3%,RSD为2.81%.该方法用于面粉中痕量溴酸根测定,结果令人满意.%A highly sensitive spetrophotometric method has been developed for the determination of trace amounts of kBiO3 based on the oxidation of Ⅰ- to Ⅰ3- by BrO3- and the further reaction of Ⅰ3- with Butyl rhodamine B( BRB) to form the ion-association complex in sulfuric acid medium. In the PVA, the complex was transparent purple. The maximum absorption wavelength absorbance is at 587 nm against reagent blank. It was discovered that the absolute value of the maximum absorption wavelength is proportional to the BrO3- concentration. Beer's law was obeyed in the rang of 0. 20~3. 5μg/10mL. The apparent molar absorption coefficient was 9. 79 ×104 L · mol-1 · cm-1,detection limit was 0. 012μg · mL-1 ,The spike recoveries rate were between94.0% - 100. 3% ,and the RSD is 2. 81%. The method has applied to the determination of trace bromate in wheat flour with satisfactory results.
    • 苗兆涛; 张婷; 张英; 丁中涛; 曹秋娥
    • 摘要: 以Rh(Ⅲ)、钨酸盐及丁基罗丹明B在6.0mol/L硫酸介质和聚乙烯醇(PVA)存在下形成离子缔合物的反应为基础,建立了一个测定Rh(Ⅲ)的光度分析新方法。在优化条件下,体系在589nm处的吸光度与Rh(Ⅲ)的质量浓度在1.2~20.0ng/mL范围内具有良好的线性关系,摩尔吸光系数为5.70×10^6L·mol^-1·cm^-1。方法具有较好的选择性,用于测定催化剂及冶金产品中铑的含量,得到的结果与用标准方法(SnCl2法)测得的结果基本一致。%A new spectrophotometric method for the determination of Rh (Ⅲ) was developed based on the ion-associated reaction among rhodium ( Ⅲ), tungstate and butyl rhodamine B in the presence of poly (vinyl alcohol) (PVA) and in 6.0 mol/L H2SO4 medium. The good linear relationship between the absor- bance at 589nm and the concentration of Rh( Ⅲ ) in the range of 1.2 - 20.0 ng/mL was obtained with the apparent molar absorptivity of 5.70 ×10^6L·mol^-1·cm^-1 The method possesses good selectivity and could be used for the determination of rhodium in the catalyst and metallurgical product. The results obtained by this method were consistent well with those obtained by SnCl2 method.
    • 黄诚; 尹红
    • 摘要: Color reaction of Se-Sb-Mo heteropoly acid with butyl rhodamine B was investigated. Hetero- poly blue was produced by treatment of Se-Sb-Mo heteropoly acid with ascorbic acid,which was precipi- tated after addition of butylrhodamine B. The resulting precipitation was isolated into toluene by suspension and was measured by spectrophotometry after dissolved in ethanol. The results indicate that,at the maximum absorption wavelength 556 n re,the molar absorptivity is 1. 341×10s L· mo1-1· cm-1 and o- beys Lamber-Beer Law at the selenium concentration nation of trace selenium in vegetables and fruits. 0~0.8μg/mL. This method is suitable for determi-%研究了硒锑钼杂多酸与丁基罗丹明B的显色反应.在盐酸介质中,硒锑钼形成的杂多酸被抗坏血酸还原形成杂多蓝,再与丁基罗丹明B形成缔合物沉淀.经甲苯悬浮分离,缔舍物由乙醇溶解,直接在有机相中测定其吸光度,最大吸收波长在556nm处,其表观摩尔吸光系数ε=1.341×10^5L·mol^-1·cm-1,硒浓度在0~0.8μg/mL范围内服从比尔定律.本法用于果蔬中痕量硒的测定,结果满意.
  • 查看更多

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号