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安培检测

安培检测的相关文献在1989年到2022年内共计164篇,主要集中在化学、轻工业、手工业、药学 等领域,其中期刊论文97篇、会议论文30篇、专利文献1104404篇;相关期刊47种,包括福州大学学报(自然科学版)、华东师范大学学报(自然科学版)、科技风等; 相关会议18种,包括第13届离子色谱学术报告会、第12届全国离子色谱学术报告会、第十届全国电分析化学学术会议等;安培检测的相关文献由305位作者贡献,包括莫金垣、陈国南、方禹之等。

安培检测—发文量

期刊论文>

论文:97 占比:0.01%

会议论文>

论文:30 占比:0.00%

专利文献>

论文:1104404 占比:99.99%

总计:1104531篇

安培检测—发文趋势图

安培检测

-研究学者

  • 莫金垣
  • 陈国南
  • 方禹之
  • 王清江
  • 黄宝美
  • 何品刚
  • 姚程炜
  • 王志国
  • 袁倬斌
  • 由天艳
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 栾绍嵘; 刘建云; 张芳芳; 倪力军
    • 摘要: 目的:建立离子色谱积分安培法检测维生素B6(VB6)与2-噻吩乙酸(2-TPA)2种合成药物中的氰化物.方法:维生素B6经甲醇溶解后,加入氢氧化钠溶液溶解萃取;2-噻吩乙酸经热氢氧化钠溶液超声溶解,定容,经0.22 μm的尼龙滤膜和On Guard RP柱处理后进入离子色谱分析.使用IonPac AS18(250 mm×4 mm)阴离子交换色谱柱和IonPac AG18(50 mm×4 mm)保护柱,20 mmol· L-1氢氧化钠淋洗液,安培检测器.结果:在优化的色谱条件下,水中氰在0.20~10.0 mg· L-1范围内呈良好线性,线性相关系数为0.999 9,最低检出限(S/N≥3)为1.64 μg· L-1,实际合成药物中CN-的检出限为0.016 4 μg· g-1,样品的加标回收率为92.4%~97.9%.维生素B6(VB6-1,VB6-2,VB6-Y1,VB6-Y2)粗产品与2-噻吩乙酸(2-TPA-1,2-TPA-2)原料样品中,VB6-1中未检出氰化物;VB6-2中氰离子的含量为0.823 μg· g-1;VB6-Y1中氰离子的含量为117.1 μg·g-1;VB6-Y2中氰离子的含量为1.872 μg· g-1;2-TPA-1中氰离子的含量为118.7μg·g-1;2-TPA-2中未检出氰化物.因此,合成原料和粗产品中含有一定的氰化物,精制产品中的氰化物含量很低,甚至有的低于检出限而未检出.结论:本文方法前处理简单,环境友好,受其他杂质的干扰较小,灵敏度高,经方法学验证可用于评价VB6与2-噻吩乙酸药物中氰化物的含量.
    • 蒋秀燕; 王丛丛
    • 摘要: The enol-keto tautomerism of p-hydroxyphenylpyruvic acid was investigated by capillary electrophoresis with amperometric detection.A three electrode system with a carbon microelectrode (i.d.0.3mm) as the working electrode was used.The two tautomers were separated and detected within 15min at 18kV of applied voltage and a 60cm (i.d.25μm) length capillary in 50mmol/L phosphate buffer (pH=6.60) including 3mmol/L β-cyclodextrin.%采用毛细管电泳-安培检测法测定了对羟基苯丙酮酸烯醇-酮式互变异构现象.采用以直径为0.3mm的碳微电极为工作电极的三电极系统,分离电压18kV,毛细管长度60cm,电泳液是添加了3mmol/L的β-环糊精溶液的pH=6.60、50mmol/L的磷酸盐缓冲液,两异构体在15min内实现基线分离.
    • 石磊; 钟春明; 林青峰; 刘慧; 潘广文; 李仁勇
    • 摘要: 建立离子色谱安培法检测尿液中胱氨酸的分析方法.将尿液稀释处理后,过OnGuardⅡRP前处理柱,去除尿液中的有机物,选用低容量阳离子交换柱IonPac CS17进行分离,以甲烷磺酸梯度淋洗,柱后用300 mmol/L NaOH溶液衍生,离子色谱脉冲安培法检测,外标法定量.胱氨酸的质量浓度在0.1~5.0 mg/L范围内与其色谱峰面积呈良好的线性,线性相关系数r2=0.9999,检出限为0.05 mg/L.测定结果的相对标准偏差为0.71%(n=6),样品加标回收率为94%~108%.该方法具有操作简单,专属性强,灵敏度高等优点,可用于临床快速检测尿液中的胱氨酸.%The method for the determination of cystine in urine was developed by ion chromatography with pulsed amperometric detection. The urine sample was diluted,then the organic matter in the urine was removed by a OnGuardⅡ RP pretreatment column,and the filter liquor was separated by using low capacity of cation exchange column IonPac CS17 with methane sulfonic acid as gradient elution,and derived by 300 mmol/L NaOH solution,the content of cystine in urine was determined with ion chromatography pulse ampere method and external standard method. The mass concentration of cystine in urine had good linear relationship with the chromatography peak area in the range of 0.1-5.0 mg/L with the correlation coefficients(r2) of 0.9999. The detection limit of the method was 0.05 mg/L. The relative standard deviation of determination results was 0.71%(n=6). The recovery of sample was 94%-108%. The method is suitable for the determination of cystine in urine with a simple operation,high specificity and sensitivity.
    • 宋千会; 鹿爱娟; 陈俊芳; 陈传品
    • 摘要: Recently microchip capillary electrophoresis amperometric detection system had attracted more and more concentration,with some advantages,like high sensitivity,low cost,easy to miniaturization and so on.This paper reviews the progress of amperometric detection systems in detector design, electrode materials and applications.%微芯片毛细管电泳安培检测系统,具有高灵敏度、低成本、易于微型化等特点,且适用于氧化还原特性的分子,今年来的得到了人们广泛的关注.本文综述了安培检测系统研究在检测器设计、电极材料和应用等方面的进展.
    • 王冠; 唐菀融; 葛淑丽; 韩若冰; 王清江; 何品刚; 方禹之
    • 摘要: 将场放大进样-移动取代边界与毛细管电泳-安培检测联用技术在酸性条件下进一步发展,成功实现了生物胺的在线富集与检测.该技术利用18-冠-6-四羧酸与带伯胺基团的生物胺分子结合的络合物与缓冲溶液中Na+发生的取代反应,在释放生物胺分子的同时实现瞬时富集.通过对样品溶液、伪稳定相、进样时间等影响富集与分离的重要参数进行研究,在最优实验条件下,5种被测生物胺分子的检测限可达到2.2~9.8 nmol/L(S/N=3),灵敏度较传统方法相比提高了160~300倍.且无需复杂的预处理步骤.实验结果证明,该法快速高效,能有效避免电极被污染,亦可进一步用于实际样品的分析检测.
    • 林立; 王琳琳; 钱聪
    • 摘要: 建立了安培检测-离子色谱法测定食品中的三氯蔗糖的方法.食品中三氯蔗糖经超纯水超声提取后,采用CarboPac PA20阴离子交换分析柱(150mm×3mm)将食品中的三氯蔗糖与干扰离子进行分离后导入安培检测器(金电极)进行检测.安培检测器对三氯蔗糖的选择性高,灵敏度比常规的液相色谱法视差检测器提高约100倍.方法的线性范围为0.05~10.0mg/L,相关系数为0.9996,检出限为2.5mg/kg.样品加标回收率在90.1%~105.3%之间,回收率相对标准偏差(RSD)(n=6)在4.9%以下.该方法简单、灵敏、操作成本低,可用于不同基质食品中三氯蔗糖的检测.
    • 李自成; 唐菀融; 朱金坤; 王清江; 何品刚; 方禹之
    • 摘要: 发展了毛细管电泳—安培检测方法,并将这一联用技术应用于苯酚、2,4-二氯苯酚、对硝基苯酚和邻、间、对甲酚的同时分离检测中.考察了氧化还原电位、缓冲溶液酸度、盐度、分离驱动电压及进样时间等因素对分析检测的影响.在优化实验条件下,以Na2HPO4-NaOH(pH11.38)为缓冲体系,6种酚类物质能够在25 min内实现基线分离,氧化还原电位0.78V(versus SCE)下可以定量检测(三电极体系为:直径为300 μm的碳圆盘电极、饱和甘汞电极及铂电极).实验结果表明,其线性达3个数量级(S/N=3),检测限达10-7 mol/L.本文还尝试把该方法应用于两个实际工业污水的酚类污染物的检测,其回收率为94.0%~107.0%,结果令人满意.因此,该方法可为政府及企业环境检测部门提供一种快速、准确、低廉、无污染、重现性高的质量控制方法.%A method based on capillary electrophoresis coupled with amperometric detection (CE-AD) was developed for the simultaneous determination of phenols:2,4-dichlorophenol,pnitrophenol,o-cresol,m-cresol and p-cresol.The effects of working electrode potential,pH and concentration of running buffer,separation voltage and injection time on CE-AD were investigated.Under the optimum conditions,the aim analytes could be separated in buffer solution of Na2 HPO4-NaOH at pH 11.38 within 25 min.A 300μm diameter carbon disk electrode generated good current responses at + 0.78 V (vs SCE) for all analytes.The current responses were linear with concentrations over three orders of magnitude with detection limits at 10-7 mol/L (S/N =3) and the recoveries were in the range of 94.0%~107.0%.This method could be successfully applied to the analysis of actual sample from coking plants with satisfactory results.
    • 贺伟; 丁卉; 王婕琛; 蔡秀玲; 施超欧
    • 摘要: 采用高效阴离子交换色谱-脉冲安培法,建立了不同作物中支链淀粉糖链长分布的分析方法.通过异淀粉酶水解支链淀粉糖分枝点的α-1,6糖苷键,形成不同长度的葡萄糖链.比较了不同色谱柱和不同色谱条件对支链淀粉糖链长分布测定结果的影响,优化了测定方法.以水、0.1 mol/L NaOH和1 mol/L NaAc+0.1 mol/L NaOH溶液为淋洗液进行梯度淋洗,通过CarboPac PA 20阴离子交换柱分离,实现了对聚合度(DP)大于80的支链淀粉糖葡萄糖链的测定.分别选取玉米、木薯、马铃薯与水稻的淀粉进行支链淀粉糖链长分布的研究,并用于其分子构型的判断.实验结果表明该方法简便、检测范围广、重现性良好,连续5次进样,在聚合度小于65时,各峰面积的相对标准偏差小于5%,可为进一步的淀粉糖理化特性研究和品种改良提供有效的实验依据.%A high performance ion exchange chromatographic method coupled with pulsed amperometric detection was established for the analysis of amylopectin chain-length distribution. The amylopectin was hydrolysised into unit chain under the function of isoamylase which can broke the a-1, 6 chain of glucan. The determination method was optimized by comparing different chromatographic columns and elution conditions. Water, 100 mmol/L NaOH and 1 mol/L NaAc + 100 mmol/L NaOH a-queous solution were used as mobile phase, and the analysis of degree of polymerization ( DP) more than 80 could be achieved by using CarboPac PA20 anion exchange column. Maize, cassava, potato and rice starch were selected as the example for the determination of chain-length distribution, which could be used to judge their molecular configurations. This method was proved to be simple, extensive and reproducible, and the RSD was less than 5% when the DP was under 65. The method could provide the basis for further research of physical and chemical properties of starch and breed improvement.
    • 朱金坤; 姚孝林; 郑胜彪; 唐婧
    • 摘要: 本文采用毛细管区带电泳-安培检测法(CZE-AD),研究了四类菊花中的常见单糖及蔗糖的分离、检测方法。在选定的实验条件下,可在20分钟内实现对葡萄糖、果糖、半乳糖、蔗糖的有效分离;待测糖类在铜电极上具有良好的电流响应、检测灵敏度(LOD:~1.0×10-6mol/L)及适宜的线性范围(5.0×10-6~5.0×10-4mol/L)。实验对滁菊、杭黄菊、贡菊、亳菊中的糖类组分进行了CZE-AD分离检测,方法具有良好的重现性及应用前景。检测结果表明,四类菊花中常见糖类组分的含量差异较大,可为相关植物资源的开发利用提供参考;检测方法简单、快速、有效,可用于菊花中常见糖类成分的测定及质量控制。%In this paper,the determination of normal saccharides in four kinds of Chrysanthemi Flos was investigated with capillary zone electrophoresis-amperometric detection method(CZE-AD).Under the optimized conditions,glucose,fructose,galactose and sucrose could be separated in 20 min.These analyzed saccharides gained excellent current response,detection limits(LOD): ~1.0×10-6mol/L and adequate linear ranges(5.0×10-6~5.0×10-4mol/L).The saccharides in four kinds of Chrysanthemi Flos(Chu-Ju,Hanghuang-Ju,Gong-Ju,Bo-Ju) were analyzed,and the results indicated good reproducibility and applicability of this proposed CZE-AD method.It could be found that the concerns of saccharides varied from one kind of Chrysanthemi Flos to another,and the detection data would provide reference to exploit the corresponding plant resources efficiently.This proposed detection method was simple,quick and effective with potential application in the analysis of saccharides for quality control of Chrysanthemi Flos.
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