Low cost solid phase extraction apparatus for aqueous samples of large volume using N2 positive pressure

Química Nova

Baeta, Bruno E. L.¹  Universidade Federal de Ouro Preto, Ouro Preto, Brasil¹  Rodrigues, Keila L. T.¹  Sanson, Ananda L.¹  Afonso, Robson J. C. F.¹ 

关键词: large volume of sample;    solid phase extraction;    positive pressure.;   

DOI  :  10.1590/S0100-40422014000100024

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Extraction/concentration is a crucial step for the analysis of organic compounds at trace level concentrations and dispersed in complex matrices. Solid-phase extraction (SPE) is one of the techniques used for this purpose. In this work, a low cost apparatus for SPE was developed that uses nitrogen under positive pressure and ensures the maintenance of the sample flow, while also allows the simultaneous extraction of different samples without cross-contamination and sample contact with plastic materials. For the system set up, easily accessible materials were used such as hypodermic needles, stainless steel tubes, rubber stoppers, and 3-way valves from serum delivery apparatus.

【 授权许可】

Unknown