Solid-phase extraction method for perfluorinated compound in environmental water

• Main Authors: LIU YIHONG, HU RONG, XIE LINSHEN, DENG CHEN, ZHOU TINGYAO, YIN XUE
• Format: Patent
• Language: Chinese; English
• Published: 04.12.2020
• Subjects: CHEMISTRY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; METALLURGY; PHYSICS; TESTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention provides a solid-phase extraction method for a perfluorinated compound in environmental water. The solid-phase extraction method comprises the following steps: preparing a solid-phase extraction small column; in the step, a dopamine-modified graphene oxide composite material (DA-GO) is used as a filler to prepare the solid-phase extraction small column, and the method comprises the steps of sample collection, solid-phase extraction and volume metering. According to the method, the dopamine-modified graphene oxide composite material (DA-GO) is adopted as a filler in the solid-phase extraction small column, so that the electrostatic attraction effect between the solid-phase extraction material and target molecules is improved, and the extraction effect is further improved. 本发明提供了一种环境水中全氟化合物固相萃取方法，固相萃取小柱的制备步骤；该步骤中采用多巴胺修饰的氧化石墨烯复合材料（DA-GO）作为填料制备固相萃取小柱、样品采集的步骤、固相萃取的步骤和定容的步骤。本发明中，固相萃取小柱中采用多巴胺修饰的氧化石墨烯复合材料（DA-GO）作为填料增加固相萃取材料与目标物分子之间的静电吸引作用，进一步提高萃取效果。