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amberlite XAD-2000树脂固相萃取富集-火焰原子吸收法测定水中痕量铜

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化学试剂 2010年第8期32卷 718-720,724页

作者：程永华李青彬平顶山学院化学化工系河南平顶山467002

用8-羟基喹啉螯合amberlite XAD-2000树脂固相萃取富集水中痕量铜,然后用火焰原子吸收法测定其含量。实验了pH、样品处理速度、洗脱剂的类型、用量、浓度、处理速度等因素对铜回收率的影响。在最优条件下,树脂最大吸附量9.35mg铜/g树脂... 详细信息

用8-羟基喹啉螯合amberlite XAD-2000树脂固相萃取富集水中痕量铜,然后用火焰原子吸收法测定其含量。实验了pH、样品处理速度、洗脱剂的类型、用量、浓度、处理速度等因素对铜回收率的影响。在最优条件下,树脂最大吸附量9.35mg铜/g树脂,回收率96%。实验表明,该方法可用于环境水样检测和干扰离子存在下(如海水中)痕量铜的检测。

关键词：铜痕量 amberlite XAD-2000 固相萃取火焰原子吸收

杯[4]芳烃修饰amberlite XAD-4树脂去除水中双氯芬酸

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中国环境科学 2012年第1期32卷 81-88页

作者：王月熊振湖周建国天津城市建设学院环境与市政工程系天津市水质科学与技术重点实验室天津300384 天津城市建设学院材料科学与工程系天津300384

通过偶氮化反应将合成的去叔丁基杯[4]芳烃连接到amberlite XAD-4树脂上,并且采用FTIR、SEM和TG/DTA法表征了杯[4]芳烃修饰amberlite XAD-4树脂的结构.结果表明,水溶液中杯[4]芳烃修饰amberlite XAD-4树脂对双氯芬酸的去除率远大于单独A... 详细信息

通过偶氮化反应将合成的去叔丁基杯[4]芳烃连接到amberlite XAD-4树脂上,并且采用FTIR、SEM和TG/DTA法表征了杯[4]芳烃修饰amberlite XAD-4树脂的结构.结果表明,水溶液中杯[4]芳烃修饰amberlite XAD-4树脂对双氯芬酸的去除率远大于单独amberliteXAD-4树脂和杯[4]芳烃.双氯芬酸的浓度为20mg/L时,随着杯[4]芳烃修饰amberliteXAD-4树脂投加量的增加,双氯芬酸的去除率增加很快.当吸附剂量增加到80mg/L时,双氯芬酸的去除率为92.8%,并且达到吸附平衡,吸附的双氯芬酸量为34.02mg/***和Freundlich等温线与实验数据均有很好的拟合度.对热力学参数的计算表明,△H与△G负值显示出反应的放热和自发过程.

关键词：杯芳烃 amberlite XAD-4树脂修饰双氯芬酸吸附

amberlite XAD-1600吸附树脂精制白芍活性成分的实验研究

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中药材 2009年第5期32卷 797-799页

作者：吴志华刘中秋范艳芳张嘉杰南方医科大学药学院广东广州510515

目的:探讨白芍乙醇提取物中主要活性成分的提取、分离与精制的方法。方法:采用多聚体吸附树脂amberlite XAD-1600,分离精制75%乙醇提取物。以芍药苷的含量和抗炎作用为评价指标,比较评价乙醇提取物经XAD-1600处理前后的化学和生物等效... 详细信息

目的:探讨白芍乙醇提取物中主要活性成分的提取、分离与精制的方法。方法:采用多聚体吸附树脂amberlite XAD-1600,分离精制75%乙醇提取物。以芍药苷的含量和抗炎作用为评价指标,比较评价乙醇提取物经XAD-1600处理前后的化学和生物等效性。结果:XAD-1600除去乙醇提取物中杂质的程度达62.75%,同时能有效保留芍药苷,其保留率为98.80%。结论:XAD-1600树脂可有效地分离与精制白芍活性成分。

关键词： amberlite XAD-1600吸附树脂芍药苷精制抗炎

amberlite XAD-2000树脂固相萃取富集-火焰原子吸收法测定水中痕量铅

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分析试验室 2008年第10期27卷 106-109页

作者：程永华李青彬平顶山学院平顶山467002

用amberlite XAD-2000树脂键合8-羟基喹啉固相萃取富集水中痕量铅,然后用火焰原子吸收法测定。实验了pH,样品处理速度,洗脱剂的类型、用量、浓度、处理速度等因素对铅回收率的影响。在最优条件下,树脂对铅的最大吸附量7.2 mg Pb/g树脂,... 详细信息

用amberlite XAD-2000树脂键合8-羟基喹啉固相萃取富集水中痕量铅,然后用火焰原子吸收法测定。实验了pH,样品处理速度,洗脱剂的类型、用量、浓度、处理速度等因素对铅回收率的影响。在最优条件下,树脂对铅的最大吸附量7.2 mg Pb/g树脂,回收率92%;且该方法抗干扰能力强,可用于环境水样检测和干扰离子存在下(如海水中)痕量铅的检测。

关键词：铅痕量 amberlite XAD-2000 固相萃取火焰原子吸收

Removal of Chromium(III) from the Waste Solution of an Indian Tannery by amberlite IR 120 Resin

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International Journal of Nonferrous Metallurgy 2012年第3期1卷 32-41页

作者： Pratima Meshram Sushanta Kumar Sahu Banshi Dhar Pandey Vinay Kumar Tilak Raj Mankhand Department of Metallurgical Engineering IIT BHU Varanasi India Metal Extraction & Forming Division CSIR-National Metallurgical Laboratory Jamshedpur India

The extraction of chromium(III) from a model waste solution and also from a waste solution of an Indian tannery with amberlite IR 120 resin is described, and the performance of this resin is compared with other similar resins. The parameters that were optimized include effect of mixing time, pH, loading and elution behaviours of chromium(III) for this resin. Sorption of chromium(III) on amberlite IR 120 followed Freundlich isotherm and Langmuir isotherm model, and the maximum sorption capacity was determined to be 142.86 mg Cr(III)/g of the resin. Higher Freundlich constant (Kf) values (6.30 and 13.46 for aqueous feed of 500 and 1000 ppm Cr(III)) indicated strong chemical interaction through ion exchange mechanism of the metal ion with the resin. The kinetic data showed good fit to the Lagergren first order model for extraction of chromium(III). Desorption of chromium(III) from the loaded resin increased with the increase in concentration of eluent (5-20% H2SO4). With 20% (v/v) sulphuric acid solution 94% chromium(III) was eluted in three stages. Elution of the Cr(III) in the column experiments was however, found to be lower (82%) than that of the shake flask data. In case of Indian tannery’s waste solution, it was observed that almost total chromium was extracted in four stages with amberlite IR 120.

关键词： Chromium(III) Ion exchange amberlite IR 120 Tannery Waste Solution

钠型amberlite IRC-50树脂分离提取ε-聚赖氨酸的条件优化

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食品与发酵工业 2018年第7期44卷 148-153,160页

作者：何洪刚李芳良马玉陈旭升毛忠贵江南大学生物工程学院江苏无锡214122

采用大孔弱酸钠型阳离子交换树脂amberlite IRC-50分离纯化发酵液中的ε-聚赖氨酸(ε-poly-L-lysine,ε-PL)。通过对其动态上样条件、洗涤条件和洗脱条件的优化,确定出最佳离子交换工艺:上样pH值为7.0,上样流速5 BV/h;以去离子水作为洗... 详细信息

采用大孔弱酸钠型阳离子交换树脂amberlite IRC-50分离纯化发酵液中的ε-聚赖氨酸(ε-poly-L-lysine,ε-PL)。通过对其动态上样条件、洗涤条件和洗脱条件的优化,确定出最佳离子交换工艺:上样pH值为7.0,上样流速5 BV/h;以去离子水作为洗涤剂,洗涤流速2 BV/h;以0.25 mol/L NaOH作为洗脱剂,洗脱流速2 BV/h。在此离子交换操作条件下,钠型amberlite IRC-50工作交换容量为305.12 mg/g,解吸率在95%以上;ε-PL纯度由24.29%提升至75.26%,ε-PL回收率达到96.40%。

关键词： amberlite IRC-50 ε-聚赖氨酸发酵液分离纯化

Octa-<i>O</i>-Methoxy Resorcin [4] Arene amberlite XAD-4 Polymeric Chelating Resin for Solid Phase Extraction, Preconcentration, Separation and Trace Determination of Ni(II), Cu(II), Zn(II) and Cd(II) Ions

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American Journal of Analytical Chemistry 2013年第5期4卷 238-251页

作者： Disha J. Vyas Bharat A. Makwana Keyur D. Bhatt Vinod K. Jain Department of Chemistry School of Sciences Gujarat University Ahmedabad India

Synthetic resin, amberlite XAD-4 was linked covalently with the third generation supramolecule, octa-O-methoxy resorcin [4] arene through -N=N-group to form chelating resin, which has been characterized and effectively used for the separation and preconcentration of metal ions such as Ni(II), Cu(II), Zn(II) and Cd(II). Critical parameters such as pH, flow rate, sorption capacity, breakthrough studies, distribution coefficient, preconcentration factor, concentration of eluting agents responsible for quantitative extraction of metal ions were optimized. The synthesized resin showed good binding affinity towards Ni(II), Cu(II), Zn(II) and Cd(II) under selective pH conditions. Good breakthrough capacity and fast exchange kinetics of the resin lead to effective separation of metal ions from their binary and ternary mixture by column method on the basis of pH and eluting agents. The resin could be reused for about 8 -10 cycles. The proposed method having the analytical data with the relative standard deviation (RSD) 2% and with recoveries of analytes higher than 98%, reflects upon the reproducibility and reliability of the method which has been successfully applied in the separation and determination of Ni(II), Cu(II), Zn(II) and Cd(II) ions in synthetic, natural and ground water samples.

关键词： Separation Preconcentration amberlite XAD-4 Octa--O-Methoxy Resorcin Arene Solid Phase Extraction

Studies of Uni-Univalent Ion Exchange Reactions Using Strongly Acidic Cation Exchange Resin amberlite IR-120

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Natural Science 2009年第2期1卷 124-128页

作者： Pravin Singare Ram Lokhande Neelima Samant Department of Chemistry Bhavan"s College Department of Chemistry University of Mumbai Department of Chemistry Sathaye College

The selectivity behaviour of ion exchange resin amberlite IR-120 for inorganic cations like sodium and potassium was predicted on the basis of thermodynamic data. The equilibrium constant K values calculated for uni-univalent ion exchange reaction systems were observed to increase with rise in temperature, indicating endothermic ion exchange reactions. From the K values calculated at different temperatures the enthalpy values were calculated. The low enthalpy and higher K values for K+ ion ex-change reaction indicates more affinity of the resin for potassium ions as compared to that for sodium ions also in the solution. The technique used in the present experimental work will be useful in understanding the selectivity behav-iour of different ion exchange resins for ions in the solution. Although the ionic selectivity data for the ion exchange resins is readily available in the literature, it is expected that the informa-tion obtained from the actual experimental trials will be more helpful. The technique used in the present experimental work when applied to dif-ferent ion exchange resins will help in there characterization.

关键词： Ion Exchange Equilibrium Equilibrium Constant Enthalpy Endothermic Reaction amberlite IR-120

Behaviour of radioactive iodide and bromide ions from aqueous solution on ion exchange resins amberlite IRA-400

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Natural Science 2009年第3期1卷 191-194页

作者： Pravin Singare Ram Lokhande Department of Chemistry Bhavans College Department of Chemistry University of Mumbai

The ion exchange resin amberlite IRA-400 in iodide and bromide form where equilibrated separately with the respective labeled iodide and bromide ion solution of different concen-trations varying from 0.005M to 0.100M in the temperature range of 32.0 oC to 48.0 oC. The dis-tribution coefficient Kd values calculated for iodide and bromide ion exchange increases with rise in ionic concentration of the external solution, however with rise in temperature the Kd values calculated where found to decrease. Also the Kd values calculated where higher for iodide exchange than bromide exchange. Among the different alternative techniques available for obtaining the Kd values, the radio-active tracer technique used in the present ex-perimental work offers high detection sensitivity. It is expected that the distribution coefficient data obtained from such experimental work will significant in environmental impact assessment on the disposal of radioactive waste.

关键词： Ion Exchange Resin amberlite IRA-400 Distribution Coefficient Temperature