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离子缔合物

离子缔合物的相关文献在1981年到2020年内共计159篇,主要集中在化学、金属学与金属工艺、环境质量评价与环境监测 等领域,其中期刊论文144篇、会议论文7篇、专利文献1106822篇;相关期刊90种,包括广东工业大学学报、冶金分析、应用化工等; 相关会议7种,包括第五届全国环境化学大会会议、中国环境科学学会2008年学术年会、第四届全国环境化学学术大会等;离子缔合物的相关文献由334位作者贡献,包括李人宇、李咏梅、刘绍璞等。

离子缔合物—发文量

期刊论文>

论文:144 占比:0.01%

会议论文>

论文:7 占比:0.00%

专利文献>

论文:1106822 占比:99.99%

总计:1106973篇

离子缔合物—发文趋势图

离子缔合物

-研究学者

  • 李人宇
  • 李咏梅
  • 刘绍璞
  • 刘忠芳
  • 艾佳
  • 卢洋
  • 唐宁莉
  • 谷学新
  • 黄勇波
  • 吴俊杰
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 李银华; 彭玉次; 许钟元; 余梦婷; 王振; 马卫兴; 董自波
    • 摘要: 在pH=8.40的Clark-Lubs缓冲溶液中,基于苯扎氯铵与十二烷基苯磺酸钠(SDBS)静电结合形成离子缔合物,引起反应体系的共振光散射强度增强这一机理,建立了一种用于检测苯扎氯铵的共振光散射光谱新方法.研究表明,检测波长在285 nm处,共振光散射强度差(ΔIRLS)与浓度在0.05~1.40 mg/L的苯扎氯铵呈良好的线性关系,其线性回归方程为 ΔIRL S=6918.05 c-441.28,相关系数R为0.9992,检出限为0.045 mg/L.建立的方法具备操作简便、灵敏度高等特点,成功地应用于邦迪中苯扎氯铵的测定.
    • 唐宁莉; 范晶晶; 马小龙; 王文平; 单展
    • 摘要: 在1.0×10-5 mol/L的盐酸溶液中,四环素可与Co2+发生络合反应形成螯合阳离子,该阳离子再与带负电的铝试剂通过静电引力作用形成三元离子缔合物,从而使反应体系的共振散射强度显著增强.在最优条件下,体系的共振散射强度增加值(△I)与四环素浓度在2.0×10-7 mol/L~1.5×10-5 mol/L范围内呈良好的线性关系,回归方程为△I=1.247×107c+16.44(c为Tc的浓度,mol/L),检出限为4.81×10-8 mol/L,相关系数为0.9971,据此建立一种测定四环素的新方法.将该方法用于检测牛奶样品中的四环素,加标回收率在99.28%~101.70%之间.
    • 鲁秀国; 过依婷
    • 摘要: 将0.5 g土壤进行消解,采用碘化钾-Cd(Ⅱ)-罗丹明B离子缔合分光光度法测定土壤中微量镉,最佳反应条件:加入2 mL浓度1 mol/L H2 SO4,20%碘化钾-抗坏血酸溶液3 mL,显色40 min,在波长588 nm处测定离子缔合物吸光度.结果表明,Cd(Ⅱ)浓度在0.25~2.0μg/mL范围内符合郎伯-比尔定律.本方法测定结果相对标准偏差小于2%,方法检出限2.1μg/kg,加标回收率98.90%~100.60%.实验表明,校园内土壤镉含量0.035~0.050 mg/kg范围内,几乎无金属镉污染.
    • 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.
    • 王二女; 陈科平; 杨季冬
    • 摘要: 目的:建立共振瑞利散射法测定大黄素的含量.方法:在pH7.3的B-R缓冲溶液中,铁(Ⅱ)与1,10-邻菲啰啉形成稳定的1∶3的配合物,再与大黄素(EMO)结合形成1∶2的离子缔合物.铁(Ⅱ)-1,10-邻菲啰啉溶液:称取0.278 0 g FeSO4·7H20溶于70 mL水中,加入邻菲啰啉(1,10-phen)0.595 0 g,加入适量的抗坏血酸,稀释至100 mL,得到1×10-2 mol·L-1的储备液,用时稀释成2.0 ×10-3 mol·L-1的工作液.室温下,于10 mL比色管中依次加入pH7.3的B-R缓冲溶液2 mL,适量的EMO标准溶液,以及2.0×10-3mol·L-1Fe(phen)]+溶液1.2 mL.每加一种试剂后混合均匀,用二次蒸馏水定容至刻度,摇匀,静置10 min后,在荧光分光光度计上以λex=λem方式进行同步扫描,记录共振瑞利散射(RRS)光谱,以λem=2λex和λem=1/2λex进行扫描,分别测量不同入射波长(λex)下的散射强度ISOS和IFDS,然后分别以ISOS和IFDS对应的波长作图,得到二级散射(SOS)光谱和倍频散射(FDS)光谱.分别在各自的最大散射波长处测量样品和试剂空白的散射强度IRRS,ISOS,IFDS及I0RRS,I0SOS,I0FDS,△I=I-I0.结果:体系的RRS、SOS和FDS显著增强并出现新的散射峰,相应的最大散射峰分别位于349、684和351 nm.EMO的质量浓度在0.8~10.4 μg·mL-1时,与RRS、SOS和FDS的散射强度呈良好的线性关系,其检出限(3σ)依次分别为10.1、32.8、28.6 ng· mL-1.血样和尿样(各3批)中测定EMO的回收率分别在94.9% ~ 102.4%和99.4%~102.7%之间,RSD分别在1.5%~3.1%和1.1% ~ 3.0%之间.将本法与紫外可见分光光度法比较,结果满意.结论:经方法学验证,体系的共振瑞利散射方法可用于尿样和血清中大黄素的测定.
    • 林明卉; 李志林; 敬东阳
    • 摘要: A spectrophotometric method for the determination of Bi(III)was developed based on the ion-associated reaction among bismuth(III),tungstate and butyl rhodamine 6G in H2 SO4 medium.The good linear relationship between the absorbance at 550 nm and the concentration of Bi(III)in the range of 0.2 ~1.0 μg/L was obtained with the apparent molar absorptivity of 7.27 ×107 L·mol -1 ·cm -1 and limit of de-tection (obtained from 3σ/K.here,σis 3 times of the standard deviation of the blank value,and K is the slope of the working curve )of 0.035 μg/L.The method,which was not interfered by most of the common i-ons,could be used for the determination of bismuth in running water and environmental water samples.The relative standard deviation of the results obtained by this method was below 3.0%,and the recovery was in the range of 95 ~105%.%Bi(III)与钨酸盐及罗丹明6G 在硫酸介质中反应生成离子缔合物,该离子缔合物在550 nm 处有较强吸收,基于此现象,建立了一个测定痕量 Bi(III)的光度分析方法。该方法的线性范围为0.2~1.0μg /L,摩尔吸光系数为7.27×107 L·mol -1·cm -1,检出限(以3倍空白值的标准偏差除工作曲线的斜率计算)为0.035μg /L,而且常见离子基本上不干扰测定。将该方法用于自来水及环境水样中铋的测定,测定结果的相对标准偏差小于3.0%,加标回收率位于95~105%之间。
    • 杨运琼; 徐丽
    • 摘要: 在硫酸介质中,BrO3-氧化I-形成I3-络阴离子,I3-络阴离子可进一步与结晶紫阳离子形成离子缔合物,在聚乙烯醇存在下,缔合物呈清亮的浅棕红色溶液,以试剂空白为参比,最大吸收波长为542 nm,吸光度与BrO3-浓度呈线性关系,线性范围为0.5~3.5μg/10 mL,表观摩尔吸光系数为1.02×105 L/(mol•cm),检出限为0.016μg/mL,样品回收率为95.2%~101.4%,RSD为2.69%。将该方法用于面粉中微量溴酸钾测定,结果令人满意。%A highly sensitive spectrophotometry method was used to determine trace amounts of KBrO3 based on the oxidation of I- to I3- by BrO3- and the further reaction of I3- with crystal violet to form the ion-association complex in sulfuric acid medium. In the PVA, the complex was transparent brownish-red. The maximum absorption wavelength was 542 nm against reagent blank. It was found that the absolute value of the maximum absorption wavelength was proportional to the BrO3- con-centration. Beer’s law was obeyed in the rang of 0.5~3.5μg/10 mL. The apparent molar absorption coefficient was 1.02×105 L•mol-1•cm-1, with detection limit of 0.016μg/mL. The spiked recoveries were 95.2%~101.4%,with the RSD of 2.69%. The method was used to determine trace bromate in wheat flour with satisfactory results.
    • 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.
    • 王瑜; 孙觅; 王立霞
    • 摘要: In a H3PO4 medium, the complex anion I3 - was formed by the oxidation of 1- with H2O2; and in the solution of aliphatic alcohol-polyoxyethylene ether sodium sulfate (AOES), an ion-association complex was formed by the reaction of 13 - with methylene blue, having the maximum absorption wavelength at 530 nra Range of linearity and value of apparent molar absorptivity found were 1.7×10-6 —2. 5× 10-5mol · L-1 and 4. 12 × 104L · mol-1 · cm-1 respectively, and detection limit (3s/k) was 2. 1× 10-7 mol · L-1. Based on these factors, a method of spectrophotometry for determination of H2O2 in atmospheric precipitation was proposed. Recovery of the method was tested by standard addition method, values of recovery found were in the range of 94. 3% —105% with RSD s (n = 5) in the range of 1. 4%-3. 2%.%在磷酸介质中,过氧化氢氧化Ⅰ-形成Ⅰ-3络阴离子;在脂肪醇聚氧乙烯醚硫酸钠(AOES)中Ⅰ-3进一步与亚甲基蓝作用形成离子缔合物,最大吸收波长位于530 nm处.过氧化氢浓度与吸光度呈线性关系,据此建立了分光光度法测定大气降水中过氧化氢含量的方法.过氧化氢的浓度在1.7×10-6~2.5×10-5 mol·L-1范围内遵守比耳定律,表观摩尔吸光率为4.12×104L·mol-1·cm-1,方法的检出限(3s/k)为2.1×10-7mol·L-1.方法用于大气降水中过氧化氢的测定,加标回收率在94.3%~105%之间,测定值的相对标准偏差(n=5)在1.4%~3.2%之间.
    • 朱慧敏; 李贵荣; 王永生; 周玉珍; 易艳妮; 周德均; 谭璟慧
    • 摘要: 在硫酸介质中,Pb2+与过量I-形成配离子[PbI4]2-,[PbI4]2-能与结晶紫(CV+)阳离子形成电中性的离子缔合物,使体系的共振瑞利散射(RRS)增强,据此建立一种新的共振瑞利光散射法测定痕量结晶紫的新方法.在0.07 mol/L H2SO4、1.8×10-4mol/L Pb2+、过量I-及0.04% PVA等的存在条件下,RRS强度改变值(ΔI)与结晶紫的浓度在0.15~180 μg/mL范围内呈良好的线性关系(r=0.998),方法检出限为0.08 μg/mL,RSD <2.5%,样品加标回收率为86.4%~107.3%.新方法灵敏、操作简便,应用于鱼肉和鱼池水中痕量结晶紫的测定,结果满意.%A novel resonance Rayleigh scattering (RRS) method was established for the determination of trace crystal violet (CV). In sulfuric acid medium, Pb2+ reacted with excessive I- to form a coordination ion [PbI4]2- ,then [Pbl4]2- reacted with CV cation (CV+) to form electroneutral ionic associate which results in increasing of RRS. Under the optimal experimental conditions which were 0.07 mol/L sulfuric acid,1.8×10~4mol/L Pb2 + .excessive I" and 0.04% polyvinyl alcohol,the enhanced intensity of RRS (△/) was linear to the concentration of CV in the range of 0.15 ~ 180 |jig/mL with linear relationships =0.998. The detection limit for CV was 0.08 μg/mL and RSD was less than 2.5%. The recovery rates of samples were 86.4% ~ 107.3%. This method is simple and sensitive. It can be applied to the determination of trace crystal violet in fish and fish pond water samples with satisfactory results.
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