Automated system for solvent extraction kinetic studies
Automated system for solvent extraction kinetic studies
复制标题
用于溶剂萃取动力学研究的自动化系统
DOI：
10.1021/ac00250a062
复制
发表时间：
1982
影响因子：
7.4
通讯作者：
H. Freiser
中科院分区：
文献类型：
--
作者：
H. Watarai;Larry Cunningham;H. Freiser
结论 我们已经描述了我们对 HP 5985B、HP 5982 和 HP 5995 GC/MS 装置的成功改造，以便在仪器离子源中的电离束附近直接引入熔融石英柱。对于 HP 5985B 和 HP 5982，修改提高了具有长 GC 保留时间的化合物的传输。 HP 5995 不仅提高了灵敏度，更重要的是，隔离阀的化学反应性和选择性也因移除而被消除。在所有这三种情况下，我们相信我们的方法是最佳的可用解决方案。尽管制造商牺牲了设计的使用灵活性（填充柱或毛细管柱）和离子源真空隔离，但考虑到数据质量和灵敏度的大幅提高，这些损失是微不足道的。（可根据 RAH 的要求提供硬件修改草图）致谢
CONCLUSIONS We have described our successful modification of HP 5985B, HP 5982, and HP 5995 GC/MS units for direct introduction of fused silica columns in close proximity to the ionizing beam in the ion source of the instrument. For the HP 5985B and HP 5982, the modification increased transmission of com-pounds with long GC retention times. Not only was sensitivity improved for the HP 5995 but, more importantly, thechemical reactivity and selectivity of the isolation valve were eliminated by its removal. In all three cases, we are confident that our approach was the best available solution. Though the man-ufacturer’s designed flexibility of use (packed or capillary columns) and ion source vacuum isolation have been sacrificed, these losses have been inconsequentialin view of substantial gains in data quality and sensitivity.(Sketches of the hard-ware modification are available on request to RAH) ACKNOWLEDGMENT