D315树脂吸附脱除SO_4~(2-)研究

本文研究了用D315树脂吸附脱除蚕蛹复合氨基酸水解液中SO42-的方法。试验结果表明：D315树脂对SO42-的静态交换容量为110mg／ml树脂，吸附平衡时间40分钟，pH4．50。被吸附的SO42-可用6．5BV，1mol／l的氨水以1．5BV／hr的流速完全洗脱。该树脂选择性好，复合氨基酸损失率极低。     

D315树脂吸附脱除SO^2—4研究

本文研究了用Ｄ３１５树脂吸附脱除蚕蛹复合氨基酸水解液中ＳＯ＾２－４的方法。试验结果表明：Ｄ３１５树脂对ＳＯ＾２－４的静态交换容量为１０ｍｇ／ｍｌ树脂，吸附平衡时间４０分钟，ｐＨ４．５０。被吸附的ＳＯ６２－４可用６．６ＢＶ，１ｍｏｌ／ｌ的氨水以１．５ＢＶ／ｈｒ的流速完全洗脱。     

吸附树脂在长链二元酸发酵液脱色中的应用

用吸附树脂HZ－802处理长链二元酸的发酵液，流速为1BV／h，温度为30℃，处理最大于9BV，脱色效果比活性炭好。选择1mol/L氢氧化钠溶液（含10％乙醇）作为再生洗脱剂。重复使用10次，树脂处理能力稳定。     

酚醛型吸附树脂对VB_(12)的吸附性能研究

研究了酚醛型吸附树脂JDW 1、JDW 2 (自制 )和DuoliteS 76 1对VB12 的静态和动态吸附 .结果表明 ,JDW 1对VB12 的吸附量达 84mg g ,明显优于DuoliteS 76 1;吸附VB12 的初始阶段 ,即达到 4 3%～6 9%平衡吸附时 ,吸附速率数据和半经验速率方程很吻合 ;酚醛型吸附树脂等温吸附VB12 的平衡吸附数据符合Langmuir方程 ,相关系数在 0 99以上 ,因此 ,酚醛型吸附树脂吸附VB12 属单分子层吸附 ;在动态条件下 ,用含甲醇 80 %溶液以 1 1BV h来洗脱吸附VB12 的JDW 2 ,在 4 2、6 4个床体积的洗脱率分别是 92 2 0 %、95 93% ,这表明酚醛型吸附树脂具有良好的洗脱性能 ,用含甲醇为 80 %溶液作洗脱剂从JDW 2洗脱VB12 ,效果很好     

大孔吸附树脂分离提取多杀菌素

采用大孔吸附树脂法分离提取多杀菌素.从11种大孔吸附树脂中筛选出DM11进行了静态、动态吸附性能实验,并考察了不同吸附、解吸条件的影响.结果表明,DM11的静态吸附容量为25.63mg/g(wet resin),其吸附等温线符合Langmuir吸附等温式.采用丙酮做洗脱剂,洗脱率为97.5%,动态吸附最佳吸附pH为9.5,吸附流速为6BV/h,穿透吸附容量为21.2mg/ml(wet resin),洗脱流速1.5BV/h.     

酚醛型吸附树脂对茶碱的吸附性能研究

研究了酚醛型吸附树脂对茶碱的静态和动态吸附。结果表明3种树脂对茶碱的吸附量均达117－204mg/g，明显优于DuoliteS-761;酚醛型吸附树脂等温吸附茶碱的平衡吸附数据符合Langmuir方程，相关系数在0．99以上，因此，酚醛型吸附树脂吸附茶碱属单分子层吸附；用1mol/LHCl和W甲醇为80％复合溶液作为吸附树脂的洗脱剂，效果很好。     

大孔树脂对油茶叶黄酮的吸附分离特性研究

选择6种大孔吸附树脂,比较其对油茶叶黄酮(FCOA)的吸附量和解吸率,筛选出较优的油茶叶黄酮吸附剂,并对其静态吸附动力学曲线和动态吸附性能进行了考察。实验结果表明,D101树脂适合于FCOA的吸附分离,其吸附机理符合Langmuir单分子层吸附。D101树脂吸附分离FCOA适宜的工艺参数为:上样液浓度为1.2mg/mL左右,pH值3.29,上样流速2BV/h,溶液处理量为19BV;洗脱剂为70%乙醇,洗脱流速2BV/h,洗脱剂用量约4BV。     

用大孔吸附树脂从发酵液中提取顺-1,2-二羟基-3,5-环己二烯

顺-1，2-二羟基-3，5-环己二烯(DHCD)是化学合戍高性能材料1．4-聚苯的单体。本文系统地研究了用大孔吸附树脂从发酵液中提取DHCD的方法，进行了树脂的筛选．考查了流速．溶液中葡萄糖浓度等因素对吸附能力的影响．选择极性的NKA-Ⅱ树脂作为吸附剂，采用12ml／mm的流速．用甲醇作为洗脱剂对DHCD发酵液进行提取使提取率达到82，2％．大大优于现有的用二氟甲烷萃取的工艺。     

不同树脂对瓜果腐霉代谢产物中除草活性成分的吸附分析

利用HPD400、HPD500、HPD600、HPD700、HPD850、ADS-17、D101、DM130大孔吸附树脂对瓜果腐霉培养滤液中除草活性成分的吸附情况进行了研究,通过对树脂吸附后的流出液和洗脱液的浓缩物进行HPLC检测分析,确定了其除草活性成分。实验发现,在所选择的8种树脂中以HPD500、HPD850、HPD600、ADS-17对除草活性成分的吸附能力最强,其中以HPD500和HPD600树脂的10%的乙醇洗脱液中除草活性成分含量最高。综合结果表明,以HPD500树脂作为吸附瓜果腐霉培养滤液中除草活性成分的适宜树脂。研究发现,HPD500树脂对除草活性成分吸附和解吸附的最佳条件是:吸附最适温度为20℃,树脂吸附饱和度为33.75mL/g,较适宜吸附流速为2BV/h,较适宜脱附流速为1BV/h,洗脱剂浓度为10%乙醇,洗脱剂用量为2.5BV。     

大孔吸附树脂分离纯化异甘草素的研究

研究大孔吸附树脂分离纯化异甘草素的工艺条件及参数。通过研究HPD-600、D4020、D101、AB-8、NKA-II、AL-2和NKA-9树脂对异甘草素的吸附和解吸附能力,筛选最佳树脂为AB-8,并研究了其对异甘草素的吸附和解吸附性能,确定了最佳的吸附与解吸附工艺参数,吸附:pH=5,室温,流速1.5BV/h,溶液处理量为5BV;脱附:洗脱剂为70%的乙醇溶液,流速1BV/h,洗脱剂用量4.5BV。异甘草素样品溶液经AB-8树脂吸附与脱附后回收率为76.7%,纯度由2.02%提高到29.1%,提高了14.4倍。实验结果表明,AB-8树脂对异甘草素的吸附量大,脱附容易,可以应用于异甘草素的分离纯化。     

D241树脂分离纯化黄芩总黄酮的研究

本文研究了用241树脂分离纯化黄芩总黄酮的方法和工艺。实验结果表明：D241树脂对黄芩总黄酮的静态交换容量是77mg/ml树脂。在pH11.0、流速2.0BV/h、提取液中总黄酮浓度17.5mg/ml条件下，D241树脂对黄芩总黄酮的动态交换容量为43.8mg/ml。用60％甲醇作为黄芩总黄酮洗脱剂，在PH4.0、洗脱流速1.5BV/h条件下，4．5BV洗脱剂即可完全洗脱被D241树脂交换的黄芩总黄酮。与酸沉淀法相比较，经过除去果胶，总黄酮纯度由33．34％提高到74．9％，粗品收得率由11.52%降低至4.83%；经过D241树脂分离纯化，其纯度达到91.5%，产品收得率3.54%。     

离子交换法分离乳酸转化液中的丙酮酸

从13种树脂中筛选出SD-4型弱碱性离子交换树脂,用于分离乳酸转化液中的丙酮酸.考察了不同操作条件对固定床离子交换效果的影响.结果表明,上样pH为1.85,流速1.5BV/h时,可得到较高的工作交换容量(2.08mmol/g湿树脂),并且可以用流出液pH 2.5作为判断终止进样的依据;考察了固定床洗脱工艺条件,结果表明,去离子水淋洗即可除去乳酸,然后用盐酸洗脱丙酮酸.当盐酸浓度为2.0mol/L,逆流洗脱速度为1.0BV/h时,洗脱效果较好.采用较佳工艺进行固定床单柱操作,丙酮酸的收率达到85%.     

REMOVAL OF GLUCORAPHENIN FROM THE EXTRACT OF RADISH PIGMENT BY ANION EXCHANGE RESIN 201×7

A method for removimg glucoraphenin from the extract of Radish pigment by anion exchange resin 201×7 was studied.The adsorption capacity of 201×7 resin for glucoraphenin was 72.8mg/ml resin,the equilibrium time 55 minutes,and the optinum pH5.5.All glucoraphenin that had been adsorbed on 201×7 resin was eluted by 1.5BV.hr^-1, eluent in whinc concentration of NaOH was 0.05mol·L^-1 at the flow rate of 1.5BV/h.Extracting solution of deglucoraphenin was enriched by vacuum and spray drying.A powder product of Radish pigment was obtained and E1cm^1%=4.30.     

An Effective Chromatography Process for Simultaneous Purification and Separation of Total Lignans and Flavonoids from Valeriana amurensis

An effective chromatography process was developed and validated for simultaneous purification and separation of total lignans and flavonoids from Valeriana amurensis. The total lignans and flavonoids in Valeriana amurensis extract were prepurified with macroporous resin column chromatography, and the conditions were optimized as follows: 40 mg/mL Valeriana amurensis extract (2.0 g) solution was loaded onto an AB-8 resin column with a diameter-to-height ratio of 1:7, followed by adsorption for 6 h; then, the column was eluted successively with 5 BV water and 10% and 50% ethanol at a flow rate 2 BV/h. The obtained 50% ethanol fraction was further repurified and separated by polyamide resin column chromatography to obtain the total lignans and flavonoids, respectively. The chromatography conditions were optimized as follows: a 50% ethanol fraction (1.0 g) was mixed with 1.0 g polyamide resin and loaded onto a polyamide resin (60–100 mesh) column with a diameter-to-height ratio of 1:3; then, the column was eluted successively with 6 BV water and 40% and 80% ethanol at a flow rate of 4 BV/h. The total lignans and flavonoids were obtained from water and 80% ethanol fraction, respectively. The content and recovery of standard compounds in total lignans and flavonoids were analyzed with HPLC-PDA, and the feasibility of the process was confirmed.     

吸附树脂对紫背天葵的水溶性色素精制研究

研究吸附树脂吸附精制紫背天葵红色素的方法和工艺。以吸附量、解吸量为指标,在pH=7时吸附,确定出S-8极性树脂和盐酸-乙醇溶液为最佳吸附剂和解吸剂。正交动态吸附和解吸实验结果表明,当原花液浓度3g/L,吸附流速3ml/min,树脂床层径高比1:1时,树脂对色素的吸附量最大;以盐酸-乙醇为解吸剂,解吸液用量30ml/g,解吸流速是1/5BV。经树脂吸附精制后的色素色价是未精制色素的3.74倍。     

A Simplified Nitroso-R Salt-Based Optic Fiber Sensor for Copper

Copper (II) has been measured using a reflection-based optic fiber sensor associated with flow-injection analysis. The sensing layer consists of Nitroso-R salt immobilized on Amberlyst A-27 resin. The sensor responses linearly in the copper concentration range 0.01-1.0 μg/ml with a detection limit of 5.0 ng/ml. The relative standard deviation of seven measurements of 0.5 μg/ml copper was 6.0%. The sensor was not fully reversible but can be fully regenerated by using 1.0 M hydrochloric acid after each measurement.     

Synthesis of chelating resins and its application in ligand exchange chromatography

Summary Three kinds of new chelating resin containing -hydroxydithiocinnamic acid, ethyl -hydroxydithiocinnamate and N-(hydroxymethyl)-thioamide functional groups were synthesized. Cu(II), Cd(II) and Hg(II) were used as complex forming metal ions. By varying the combination of metal ion and chelating resin, a great variety of separation systems could be realized. For the on-line trace enrichment of 2-mercaptobenzimidazole, the copper-loaded N-(hydroxymethyl)-thioamide concentration column was found most suitable. UV detection at 300 nm was used. The detection limit was 0.2 ng/g. A 10 ml sample was found to be sufficient to attain the described sensitivity, and linear relationship was obtained in the range of 0.75 ng/g to 12 ng/g. The best separation of the thiol compound mixture thioglycolic acid, methionine, cysteine and 2-mercaptoethanol was obtained with copper-loaded ethyl -hydroxydithiocinnamate resin; UV absorbance detection was at 215 nm.     

酚醛型吸附树脂对咖啡因和茶碱吸附性能的研究

用静态和动态方法研究了酚醛型吸附树脂JDW-2和DuoliteS-761对咖啡因和茶碱的吸附行为.结果表明,自制树脂JDW-2对咖啡因和茶碱的吸附性能明显优于DuoliteS-761.树脂的比表面积、含水量、酚羟基的含量与吸附关系密切,尽管JDW-2的比表面积比DuoliteS-761小,但前者比后者具有更高的含水量(42%)和酚羟基含量(3.72mmol/g).在静态条件下,JDW-2吸附咖啡因的速率比DuoliteS-761快,JDW-2树脂对咖啡因和茶碱饱和吸附量分别为246和127mg/g干树脂,而DuoliteS-761树脂对它们的吸附量分别为121和53mg/g干树脂;JDW-2和DuoliteS-761吸附咖啡因的初始阶段是粒扩散控制过程;酚醛型吸附树脂等温吸附咖啡因和茶碱的平衡吸附数据符合Langmuir方程.酚醛型吸附树脂吸附咖啡因和茶碱属单分子层吸附.在动态条件下,1mol/LHCl和40%甲醇溶液以1.5BV/h来洗脱吸附咖啡因的JDW-2,在4～5个床体积的洗脱率分别是88%和93%,而1mol/LHCl和80%甲醇溶液以1.5BV/h来洗脱吸附茶碱的JDW-2,在3～4个床体积的洗脱率分别是91%和96%,表明酚醛型吸附树脂具有良好的洗脱性能,用1mol/LHCl和40%(或80%)甲醇溶液作复合洗脱剂从JDW-2中洗脱咖啡因(或茶碱),效     

PSVA螯合树脂的合成及其对金属离子的螯合性能

合成了大孔螯合树脂聚-N-亚水杨基乙烯基苯胺,研究了它对6种金属离子的螯合性能。结果表明,在pH=5时树脂对Cu²⁺的吸附容量达1.3 mmol/g干树脂。据此提出了一个用此树脂回收废水中微量铜和除去光亮镀镍溶液中微量Cu²⁺的方法,效果良好。