Determination of Trace Lead in Surface Water by Microwave Plasma Emission Spectrometry with Ion imprinted Polymer Microspheres Solid Phase Extraction[J]. 2018,37(8):919-924.
Determination of Trace Lead in Surface Water by Microwave Plasma Emission Spectrometry with Ion imprinted Polymer Microspheres Solid Phase Extraction[J]. 2018,37(8):919-924.DOI:
A method was developed for the determination of trace Pb2+in surface water by microwave plasma atomic emission spectrometry with ion imprinted polymer solid phase extraction(IISPE/MP-AES).The ion imprinted polymer microspheres(IIPMs) were synthesized via Pickering emulsion polymerization with Pb2+as template ions.Results showed that IIPMs exhibited a porous structure with an average particle diameter of 266 μm,which resulted in their high selectivity and monolayer adsorption toward Pb2+.The solid phase extraction process was conducted with IIPMs as sorbent and 5%nitric acid as elution solvent.Factors affecting preconcentration such as pH value,cycle number,concentration and adding amount of Pb2+were investigated.Under the optimized experimental conditions,the limits of detection(LODs) of the method were 026 μg/L,and the spiked recoveries were in the range of 924%-988%with relative standard deviations(RSDs) not more than 41%.The combination of IIPMs-SPE and MP-AES was successfully applied in the determination of trace lead in surface water.
关键词
离子印迹固相萃取皮克林乳液聚合法铅微波等离子体发射光谱法地表水
Keywords
ion imprinting solid phase extraction(IISPE)Pickering emulsion polymerizationleadMP-AESsurface water