CONCENTRATION OF ORGANICS FROM AQUEOUS SOLUTIONS USING UNCOATED CAPILLARY COLUMNS
CONCENTRATION OF ORGANICS FROM AQUEOUS SOLUTIONS USING UNCOATED CAPILLARY COLUMNS
复制标题
使用无涂层毛细管柱浓缩水溶液中的有机物
DOI：
10.1021/ac00221a012
复制
发表时间：
1990
影响因子：
7.4
通讯作者：
B. Middleditch
中科院分区：
文献类型：
--
作者：
A. Zlatkis;R. Ranatunga;B. Middleditch
已经开发出一种用于浓缩水溶液中痕量有机物的新技术。有机物的浓缩是通过使水样通过无涂层的塑料和金属毛细管来进行的。去除柱壁上的有机化合物，同时使水从毛细管中洗脱。对影响捕集效率的参数如柱长、柱内径、柱内表面积、捕集温度、溶质浓度、水溶液离子强度、溶液通过捕集毛细管的流速等进行了详细研究。据确定，塑料类材料，特别是有机硅，能够极其有效地从溶液中去除痕量有机物。捕获温度和溶液通过色谱柱的流速是有助于去除有机物的重要参数。
A novel technique has been developed for the concentration of trace organics in aqueous solutions. Concentration of organics is carried out by passage of aqueous samples through uncoated plastic and metal capillary tubing. The organic compounds are removed on the walls of the column while the water is allowed to elute from the capillary. Detailed investigations were also carried out on parameters that affect the efficiency of trapping such as the column length, column internal diameter, column internal surface area, trapping temperature, solute concentration, ionic strength of aqueous solutions, and the flow rates of solutions through trapping capillaries. It was determined that plastic type materials, and silicone in particular, are capable of removing trace organics from solution extremely efficiently. The trapping temperature and the flow rate of solutions through the columns are important parameters that contribute to the removal of organics.