仪器网

欢迎您: 免费注册 仪器双拼网址:www.yiqi.com
首页-资讯-资料-产品-求购-招标-品牌-展会-行业应用-社区-供应商手机版
官方微信
中国仪器网• 行业应用
仪器网/ 行业应用/ 解决方案/ Restek混合半极性聚硅氧烷固定相在GX气相毛细管柱中的

Restek混合半极性聚硅氧烷固定相在GX气相毛细管柱中的

点击这里给我发消息
内容节点
概述
实验/设备条件
样品提取
实验/操作方法
实验结果/结论
仪器/耗材清单
Introduction
Hybrid silphenylene backbone modied siloxane capillary GC stationary phases were commercially introduced two decades ago. These hybrid siloxanes demonstrated increased thermal stability over
the conventional low polarity phases they were designed to mimic. The changes in physical properties induced by the insertion of rigid benzene ring bridges into the exible siloxane backbone also
requires modications in surface chemistries to achieve good wettability and lm stability in order to maintain column eciency.
Several years later, a second generation of more polar hybrid stationary phases was introduced. These polymers, designed to mimic 35% and 50% phenyl containing siloxanes, also often incorporated
other types of aromatic backbone modications to further enhance thermal stability. Even more exotic surface chemistries were required to achieve wettablity while maintaining good deactivation. There
are always trade-os and, in the end, deactivation often suered in the interest of column eciency.
Recent application of new cross-bonding and deactivation chemistries to a 35% phenyl equivalent hybrid siloxane stationary phase has resulted in advances in both column eciency and inertness.
These new columns display improved inertness for the analysis of highly polar compounds, producing symmetrical peaks for both basic and acidic compounds while maintaining high column eciencies.
相关产品
相关解决方案
热门解决方案
最新解决方案
在线留言
官方微信

仪器网微信服务号

扫码获取最新信息


仪器网官方订阅号

扫码获取最新信息

在线客服

咨询客服

在线客服
工作日:  9:00-18:00
联系客服 企业专属客服
电话客服:  400-822-6768
工作日:  9:00-18:00
订阅商机

仪采招微信公众号

采购信息一键获取海量商机轻松掌控