Solid-Phase Extraction Combined with Ultrasonic-Assisted Dispersive Liquid-Liquid Microextraction fo

来源 :第2届大连国际色谱学术报告会、第37届国际高效液相色谱及相关技术会议、第18届全国色谱学术报告会 | 被引量 : 0次 | 上传用户:ptf_phoenix
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  A simple, inexpensive and reliable analytical method was developed for the determination of benzimidazoles in vegetables using HPLC.The sample pretreatment using solid-phase extraction (SPE) for removing matrix and dispersive liquid-liquid microextraction (DLLME) for enriching analytes was performed.For the SPE, different sorbents were tested for different sample matrices.For the DLLME, the parameters influencing the extraction efficiency such as type volume of extraction solvent, type and volume of the elution solvent (disperser solvent), pH, as well as the salt addition, were studied and optimized.The presented method that combined the advantages of SPE and DLLME, had higher selectivity than SPE method and was successfully applied to the determination of benzimidazoles pesticides in vegetables.
其他文献
在《政风热线》11年,我每一天都会准时走进直播间,打开话筒键.从这个小小的话筒里传出的,是很多老百姓真实的呼声,迫切的求助.而我要讲的故事,就从这里开始.rn那是2015年的一
期刊
  The quality of cigarette mainly depends on the flue gas which composed the chemical composition.Study deeply to the chemical composition was very important
会议
【摘 要】国有企业思想政治工作,是指思想政治工作在完成实现党对国有企业领导的基础上,通过充分发挥思想政治工作自身的政治引导、经济参与等功能,增强企业的凝聚力,激发员工工作积极性,提高生产效率,提高国有企业的综合实力,保证国有企业经济职能和社会职能顺利实现的一项综合性教育工作。本文论述了中国石油新疆阿勒泰销售公司哈巴河经营部对新时期思政工作的推进进行的有益探索。  【关键词】中国石油;国有企业;思
目的探讨新辅助化疗在乳腺癌治疗中的价值。方法对甘肃省妇幼保健院收治的经病理活检证实的乳腺癌患者术前给予TEC化疗方案,化疗2周后,评价其疗效。结果新辅助化疗后Ⅱ、Ⅲ期
11月26日,新华社2020年新闻学术年会在北京举行,会期一天.本届学术年会共收到论文160余篇,共设四个论坛:“开幕暨主题论坛”、“媒体融合发展与全媒体传播体系建设”分论坛、
期刊
  It is apparent from this study that we had developed a new, steady and rapid method for identification of Vibrio parahaemolyticus Strains.For the rapid iden
会议
  Aim: Dandelion extracts have been used in Traditional Chinese Medicine (TCM) for treatment of breast diseases.Our research demonstrated that dandelion water
会议
  Bramble was also called as raspberry, fruit, seeds, roots, stems, etc.can be as medicine with a very high medicinal value.At home and abroad , it had a long
会议
  The process of cigarette combustion was very complicated, in which pyrolysis was extremely important.Research on pyrolysis behavior of tobacco sheet could i
会议
砂姜黑土区钾、硼、锌肥能显著提高大白菜产量,增产作用大小顺序依次为钾>硼>锌。钾、棚、锌还能降低大白茶植株体内NO3-含量,改善其品质。施用镁肥则表现一定负作用。 Shajiang bla