Pretreatment method of magnetic nanometer graphene for analysis of polycyclic aromatic hydrocarbon and organochlorine pesticide in water

• Main Authors: ZENG YANYAN, ZHU DAN, FAN HONGBO, YUAN MEIYI, LIN BOJI, HU JUNJIE, LAO ZHILANG, LIANG ZHIHUI, LI YANLIANG, WU KANGMING
• Format: Patent
• Language: Chinese; English
• Published: 14.12.2018
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to a pretreatment method of magnetic nanometer graphene for polycyclic aromatic hydrocarbon and organochlorine pesticide in a water sample. The pretreatment method comprises thesteps of: uniformly dispersing the magnetic nanometer graphene used as a solid dispersing phase in the water sample so that the polycyclic aromatic hydrocarbon and organochlorine pesticide, to be measured, in the water sample are in full contact with the magnetic nanometer graphene; separating the magnetic nanometer graphene fully absorbed with the polycyclic aromatic hydrocarbon and organochlorine pesticide, to be measured, from the water sample under an effect of an external magnetic field; adding a desorption agent so that an organic pollutant to be measured is separated from the magnetic nanometer graphene; and recycling the magnetic nanometer graphene, and collecting the desorption agent for the organic pollutant to be measured. By high absorption capability of the magnetic nanometergraphene on the organic po