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混合纤维素酯微孔萃取膜是一种由萃取试剂与混合纤维素制成的一种特殊分析用膜。用“液-固”萃取过程代替常规的“液-液”萃取过程,使分离、纯化和制样一次完成。方法不但简单、快速、成本低,而且还能避免接触对人体有害的有机试剂。萃取膜与X荧光光谱联合是解决痕量分析的一种新技术。用不同的萃取膜和不同的萃取条件可以适应生物、环保、地质等不同样品多种元素分析的需要。方法简单、背景低、测量下限和精度符合要求,是薄样法的进一步发展。
A mixed cellulose ester microporous extraction membrane is a special analytical membrane made from extraction reagents and mixed cellulose. The “liquid-solid” extraction process is used instead of the conventional “liquid-liquid” extraction process to separate, purify and sample preparation in one go. The method is not only simple, fast, low cost, but also avoid contact with harmful organic reagents. Extraction membrane and X-ray fluorescence spectrometry is a new technology to solve trace analysis. With different extraction membranes and different extraction conditions can be adapted to biological, environmental protection, geological samples of different elements of the needs of a variety of elements. The method is simple, the background is low, the lower limit of measurement and accuracy meet the requirements, which is the further development of the thin sample method.