首页> 外文期刊>Journal of analytical chemistry >Preconcentration of 2,4-dichlorophenoxyacetic acid on molecularly imprinted polymers and its subsequent determination by high performance liquid chromatography
【24h】

Preconcentration of 2,4-dichlorophenoxyacetic acid on molecularly imprinted polymers and its subsequent determination by high performance liquid chromatography

机译:在分子印迹聚合物上预浓缩2,4-二氯苯氧乙酸及其随后的高效液相色谱法测定

获取原文
获取原文并翻译 | 示例
           

摘要

The potency of molecularly imprinted polymers (MIP) for 2,4-dichlorophenoxyacetic acid (2,4-D) in the dynamic sorption preconcentration (solid phase extraction) of 2,4-D and three other structurally related species (2,4-dichlorophenol, 2-chlorophenol, and dikamba) from aqueous solutions is assessed. The optimal conditions for preconcentration are found: 0.01 M HCl, 25-100 mL of solution, flow rate of solution 0.7 mL/min, column (15 × 2.7 mL), and sorbent weight 0.04 g. The analytes are desorbed with 1 mL of methanol and detected in the eluate by reversed-phase HPLC with spectrophotometric detection at 225 nm. The detection limit for 2,4-D makes 0.4 μg/mL without preconcentration and 0.01 μg/mL with preconcentration from a volume of 100 mL. The procedure is applied to the analysis of model mixtures based on fresh river water.
机译:分子印迹聚合物(MIP)对2,4-D和其他三种结构相关物质(2,4-)的动态吸附预浓缩(固相萃取)对2,4-二氯苯氧基乙酸(2,4-D)的效力评估水溶液中的二氯苯酚,2-氯苯酚和dikamba)。找到了最佳的预浓缩条件:0.01 M HCl,25-100 mL溶液,0.7 mL / min的溶液流速,柱(15×2.7 mL)和吸附剂重量0.04 g。用1 mL甲醇解吸分析物,并通过反相HPLC在225 nm处进行分光光度检测在洗脱液中进行检测。从100 mL的体积中,2,4-D的检出限为0.4μg/ mL(无预浓缩)和0.01μg/ mL(有预浓缩)。该方法适用于基于新鲜河水的模型混合物的分析。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号