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动力学光度法

动力学光度法的相关文献在1989年到2018年内共计438篇,主要集中在化学、轻工业、手工业、环境质量评价与环境监测 等领域,其中期刊论文418篇、会议论文19篇、专利文献258990篇;相关期刊149种,包括南昌大学学报(理科版)、理化检验-化学分册、冶金分析等; 相关会议11种,包括中国化学会第六届全国仪器分析及样品预处理学术研讨会、第十届全国青年分析测试学术报告会、首届西部地区分析化学学术研讨会等;动力学光度法的相关文献由669位作者贡献,包括周之荣、陈国树、王建华等。

动力学光度法—发文量

期刊论文>

论文:418 占比:0.16%

会议论文>

论文:19 占比:0.01%

专利文献>

论文:258990 占比:99.83%

总计:259427篇

动力学光度法—发文趋势图

动力学光度法

-研究学者

  • 周之荣
  • 陈国树
  • 王建华
  • 何荣桓
  • 王黎
  • 徐其亨
  • 李祖碧
  • 柳玉英
  • 王晓菊
  • 张爱梅
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 左苗苗; 李艳霞
    • 摘要: In a dilute hydrochloric acid medium,salicylic acid showed strong inhibitory effect on the fading reaction of alizarin red oxidized by potassium bromate.In this paper,the change of alizarin red concentration in inhibitory reaction was monitored by sepc-trophotometry.and based on this,a new method for the determination of salicylic acid by inhibitory kinetics spectrophotometry in salicylic acid-KBrO3-alizarin red system was established.The detection limit was 0.0017 μg·mL-1and the linear range was 0.008~1.2 μg·mL-1.%在稀盐酸介质中,水杨酸的存在对溴酸钾氧化茜素红褪色反应有很强的阻抑作用,利用光度法监测反应过程中茜素红浓度的变化,建立了水杨酸-溴酸钾-茜素红体系阻抑动力学光度法测定水杨酸含量的方法.在选定条件下,方法的线性范围是0.008 μg·mL-1-1.2 μg·mL-1,检出限为0.0017 μg·mL-1.
    • 郑颖华
    • 摘要: 目的 探讨消毒液中的过氧乙酸予以阳离子表面活性剂和增敏动力学光充法的检测价值.方法 2015年1月-2016年12月检测地点为菏泽市立医院,稀硫酸介质下过氧乙酸增强阻抑Fe(Ⅱ)-邻二氮杂菲体系的显色反应,在阻抑体系检测其510 nm波长的吸光度值.结果 0.05~1.50μg/ml范围内检出限为0.02μg/ml,过氧乙酸及吸光度呈现递减式线性关系;在400~600 nm的波长范畴中,非阻抑体系VCH3COOOH=0.00 ml吸收峰为510 nm,尖锐峰形,峰值高,单一峰数,强吸收出现在2.20×104 mol吸光系数,在510 nm处吸光谱未发生变化,阻抑体系为最大吸收值,吸光度值在加入过氧乙酸为阶梯式下降;吸光度在阳离子表面活性剂的激活中升高,TPB-STAB混合体系出现明显优势,当TPB、STAB剂量相同时,吸光度突然升高,在2.20×104 mol吸光系数吸收波长max.反应时间和吸光度在反应起始时间呈正比例,但其达到最大吸光度值及趋于恒定的时间具有一定的差异;当PCH3COOOH=0μg/ml时,非阻抑体系5~8 min(A值)缓慢上升,9 min后逐渐稳定;当PCH3COOOH=1.0μg/ml时,在1~5 min内阻抑体系A值增高显著,6 min后趋于平稳.结论 过氧乙酸对铁(Ⅱ)-邻二氮杂菲分光光度法检测消毒液过氧乙酸效果确切.%[Objective]To study the effect of the sensitization kinetics and the cationic surfactant on detecting the peracetic acid in disinfectant solution.[Methods]From January 2015 to December 2016, samples were tested in Heze Municiple Hospital. The inhibitory effect of peracetic acid in dilute sulfuric acid medium on the chromogenic reaction of Fe (Ⅱ) -two ortho phenanthroline system was very significant, and the absorbance value was detected at the wavelength of 510 nm in the inhibitory system. [Results]In the range of 0.05~1.50 μg/ml, the linear relationship between the absorbance and peracetic acid was decreased, and the detection limit was 0.02 μg/ml; in the wavelength range of 400-600 nm, the maximum absorption peak appeared at 510 nm in the absorption spectra when VCH3COOOH=0.00 ml (non-inhibitory system), with a high, sharp, single peak, strong absorption appeared when the molar absorption coefficient was equal to 2.20×104 mol, inhibitory system remained absorption maxima at 510 nm, the shape of absorption spectrum had not changed, after adding peracetic acid the absorbance value stepped down; the absorbance value increased in the activation of the cationic surfactant, the superiority of the TPB-STAB hybrid system was very significant, when the dosage of STAB and TPB was the same, the absorbance value was rising rapidly; the maximum absorption wavelength was at 2.20×104 molar absorptivity. There was a positive correlation between the reaction time and the absorbance value at the initial reaction time, but the difference between the time of reaching the maximum absorbance value and the time of approaching the constant value was significant; when PCH3COOOH=0 μg/ml, in non-inhibitory system, the A value increased slowly for 5-8 minutes, and stabilized after 9 minutes; when PCH3COOOH=1.0 μg/ml, the A value of the inhibitory system increased rapidly in 1-5 minutes, and stabilized after 6 minutes.[Conclusion]The application of Fe (Ⅱ) -two ortho phenanthroline system in the determination of peracetic acid has a good effect.
    • 韩小燕; 刘彤彤
    • 摘要: 在稀硫酸介质和加热条件下,锰(II)对高碘酸钾氧化甲苯胺蓝有明显的催化作用,以此反应为基础建立一种测定锰的催化光度法.实验考察了影响反应速度的条件及动力学参数,探讨了反应的最大吸收波长、酸度、KIO4用量、甲苯胺蓝用量、反应的最佳时间和最适温度,计算了相应的活化能值,表观速率常数,并确定反应为一级反应.结果表明:最大吸收波长为590 nm,反应表观活化能为61. 59 kJ·mol-1,表观速率常数为0. 078 5 s-1,测定的标准偏差为1. 28×10 - 2,检出限为0. 039 μg·L-1.本法具有简便、准确的优点.
    • 来守军; 张雪; 关晓琳
    • 摘要: 在硫酸、硝酸和盐酸等酸性(H+)介质中,痕量碘酸根离子会对Fe(Ⅱ)-邻二氮菲体系的显色反应产生阻抑作用.选用协同增敏阻抑法测微量碘,研究了体系反应中表面活性剂的增敏、反应介质的酸度、试剂的最佳用量及反应时间等.测得碘离子线性范围为0.2~1.0μg·mL-1,检出限为0.06μg·mL-1.该法在室温下测定海带中的碘含量,灵敏度高,选择性好,操作简便,效果较好.
    • 马晓梅
    • 摘要: 目的 探讨消毒液中的过氧乙酸应用增敏动力学光充法与阳离子表面活性剂协同检测的效果.方法 2015年1月—2016年12月于菏泽市立医院进行检测,过氧乙酸在稀硫酸介质中对Fe(II)-邻二氮杂菲体系的显色反应的阻抑作用十分显著,在510 nm波长处检测阻抑体系的吸光度值.结果 于0.05~1.5μg/mL范围内吸光度和过氧乙酸的线性关系为递减式,检出限为0.02μg/mL;在400~600 nm的波长范围内,对各体系的吸收光谱分别检测,VCH3COOOH=0.00 mL(非阻抑体系)在510 nm时出现最大吸收峰,峰数单一,峰值较高,峰形尖锐,摩尔吸光系数=2.20×104时,出现强吸收,阻抑体系在510 nm处仍维持吸收最大值,吸收光谱形状未出现改变,过氧乙酸加入后吸光度值呈阶梯式降低;在阳离子表面活性剂的作用下,吸光度整体出现不同程度的增加,如十四烷基溴吡啶TPB及十六氨基溴吡啶CPB,十八烷基三甲基溴化铵STAB,相对来说,TPB-STAB混合体系的优越性十分显著,加入相同含量的STAB及TPB,吸光度值急骤上升,在最大吸收波长处摩尔吸光系数为2.20×104.在最初反应时间吸光度与反应时间呈正相关,但其达到最大吸光度值及趋于恒定的时间具有一定的差异;当PCH3COOOH=0μg/mL时,非阻抑体系A值为5~8 min增大缓慢,9 min后趋于恒定,A值在1 h左右变化较小;当PCH3COOOH=1.0μg/mL时,在1~5 min内阻抑体系A值上升迅速,6 min后较为稳定,在1 h左右A值的变化较小.结论 微量过氧乙酸应用过氧乙酸对铁(II)-邻二氮杂菲分光光度法检测效果确切,可用于检测消毒液中的过氧乙酸.
    • 向晓明; 李花; 张小林
    • 摘要: 在硫酸介质中,痕量碘酸根离子对Fe(Ⅱ)-邻二氮菲体系的显色反应有明显的阻抑作用,据此建立阻抑动力学光度法测定微量碘的方法。研究了阻抑反应的动力学参数包括表面活性剂增敏、酸度、试剂用量、试剂加入顺序和时间等,确定了最优化的反应条件。方法的线性范围为0.05~2μg· mL-1,检测限为0.03μg· mL-1。该方法操作简便、灵敏度高、选择性好,用于食盐中微量碘的测定,取得满意的结果。%A new inhibitory kinetic spectrophotometric method for the deter mination of trace amounts of iodine in edible salt was proposed. This method was based on the inhibitory effect of iodate on the oxidation of iron( II) by iodate in the presence of sulfuric acid. The effects of reaction parameters such as surface active agent,acidity,reagent consumption,reagent addition sequence and time were investigated and optimized. Under the optimum conditions,the calibration curve was linear in the range of 0. 05~2 μg· L-1 with the detection limit of 0. 03 μg· mL-1 . The developed method was simple,sensitive and selective,which was applied to the deter mination of trace level of iodine in edible salt with satisfactory results.
    • 吴春来; 王涛; 张士苹; 樊静
    • 摘要: 在酸性条件下,利用对苯二酚能够阻抑碱性藏花红和溴酸钾反应的原理,联用顺序注射分析技术建立了快速测定环境水样中对苯二酚的新方法.在最佳实验条件下,对苯二酚的线性范围为0.05 ~ 1.50 μg· mL-1,检出限为0.02 μg·mL-1,完成一次分析循环总的试剂消耗仅为0.125 mL.该方法用于自来水、地表水和河水中对苯二酚的测定,结果与HPLC法所得结果对照,无显著性差异.
    • 李雪梅; 柳玉英; 万贝贝
    • 摘要: 在弱酸条件下,痕量铈(Ⅳ)对于亮绿SF和十六烷基三甲基溴化铵(CTMAB)的褪色反应有阻抑作用,由此建立了一种动力学光度法测定铈的新体系。考察了缓冲溶液种类和用量、亮绿SF和CTMAB用量、试剂加入顺序、温度和时间等因素对反应的影响,建立的最佳测定条件为:在25 mL 比色管中加入1.0 mL CTMAB溶液、2.0 mL 醋酸‐醋酸钠缓冲溶液、2.0 mL 亮绿SF溶液,室温反应60 min ,测定波长为630 nm。实验表明,在Ce(Ⅳ)质量浓度为0~80 ng/mL时,吸光度的改变量ΔA与Ce槑质量浓度有良好的线性关系,相关系数为0.9943,检出限为7.1 ng/mL ,表观摩尔吸光系数为3.73×105 L · mol-1· cm -1。实验方法用于含铈催化剂中铈含量的测定,其测定结果与硫酸亚铁铵滴定法基本一致,5次测定结果的相对标准偏差RSD≤4.0%。%A sensitive method for the determination of cerium (Ⅳ) was established based on its inhibitory effect on the reaction of hexadecyl trimethyl ammonium bromide(CTMAB) with light green SF in the me‐dium of weak acid. The influence of buffer solution ,amount of CTMAB and light green SF ,addition order of reagents ,reaction temperature and time were studied and the optimum condition was founded as follows :1.0 mL of CTMAB solution ,2.0 mL of HAc‐NaAc buffer solution and 2.0 mL of light green SF solution were added in a 25 mL colorimeter tube ,after reaction for 60 min at room temperature ,the determination was performed at wavelength of 630 nm. The results showed that the absorbance variation (ΔA) showed good linear relationship to the mass concentration of Ce (Ⅳ) in range of 0‐80 ng/mL .T he correlation coeffi‐cient was 0.994 3 .The detection limit was 7.1 ng/mL .The apparent molar absorptivity was 3.73 × 105 L · mol-1 · cm -1 .The experimental method was applied to the determination of cerium content in cata‐lyst .The found results were basically consistent with those obtained by ammonium ferrous sulfate titration method .The relative standard deviation (RSD ,n=5) was less than 4.0% .
    • 王红专; 于红林
    • 摘要: 研究了在敏化剂十六烷基三甲基氯化铵作用下,Pb2+阻抑H2 O2氧化甲基紫的褪色反应,建立了甲基紫褪色阻抑动力学光度法测定痕量Pb2+的方法。在25 mL容量瓶中,加入0.80 mL的氨水溶液(物质的量浓度0.1 mol/L)、0.80 mL的H2 O2溶液(质量分数3.0%)、4.00 mL甲基紫溶液(物质的量浓度1×10-4 mol/L)、1.0 mL的十六烷基三甲基氯化铵溶液(物质的量浓度1×10-2 mol/L),80°C恒温反应20 min后冷却,测定吸光度,根据加Pb2+溶液和不加Pb2+溶液的吸光度差与Pb2+质量浓度绘制了工作曲线,并由试样的吸光度差值确定痕量Pb2+含量。该法的测定波长为584 nm,线性范围为0.02~1.6 mg/L,检出限为0.013 mg/L。方法用于环境水样中痕量铅的测定,相对标准偏差为2.3%~2.7%,回收率为97.5%~102.1%。
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