【摘 要】
：
Metsulfuron-methyl molecularly imprinted polymer(MIP)-coated stir bar was prepared for sorptive extraction of sulfonylurea herbicides in complex samples.The MIP
【机 构】
：
School of Chemistry and Chemical Engineering
论文部分内容阅读
Metsulfuron-methyl molecularly imprinted polymer(MIP)-coated stir bar was prepared for sorptive extraction of sulfonylurea herbicides in complex samples.The MIP-coating was about 21.3 μm thickness with the relative standard deviation(RSD) of 4.4％(n=10).It was homogeneous and porous with good thermal stability and chemical stability.The extraction capability of the MIP-coating was 2.8 timcs over that of the non-imprinted polymer (NIP)-coating in hexane.The MIP-coating exhibited selective adsorption ability to the template and its analogues.The extraction conditions,including extraction solvent,desorption solvent,extraction time,desorption time and stirring speed,were optimized.A method for the determination of six sulfonylurea herbicides by MIP-coated stir bar sorptive extraction coupled with high performance liquid chromatography(HPLC) was developed.The linear range was 10-200 μg/L and the detection limits were within a range of 2.0-3.3 μg/L.It was also applied to the analysis of sulfonylurea herbicides in spiked river water,soil and rice samples.
其他文献
In this paper,a chemotaxis model with reproduction term in a bounded domain Ω (∈) Rn is discussed.The existence of a global-in-time solution and a global attr
In this paper the authors consider the existence and uniqueness of the solution to the initial boundary value problem for a class of modified Zakharov equations
A clean,fast,and facile oxidation of multiwalled carbon nanotubes (MWCNTs) by H2O2/heteropolyacid (H3PW12O40) gave highly carboxylated MWCNTs under mild conditi
A sensitive optical waveguide(OWG) sensor which can be used to detect volatile organic compounds(VOCs) was presented.The sensing device(element) was fabricated
Response surface methodology was used to optimize the extraction conditions of polysaccharides from Undaria pinnatifida.The effects of three independent variabl
Ga(ClO4)3-catalyzed reaction of 1,2-aryldiamines and a-bromoketones to afford 2-substituted quinoxalines in good yields is described.The reaction proceeded via
In an attempt to develop potent antitumor agents,new rhodacyanine analogues containing the pyridinium ring (5a-5h),the isoquinolinium ring (6a-6c) and the quino
Catalytic decomposition of methane using a Fe-based catalyst for hydrogen production has been studied in this work.A Fe/Al2O3 catalyst previously developed by o
Incorporation of anions of Acid Red 114 dye (1,3-naphthalenedisulfonic acid,8-[2-[3,3'-dimethyl-4'-[2-[4-[[(4-methylphenyl)sulfonyl]oxy] phenyl]diazenyl] [1,1'-
In this paper,some weighted estimates with general weights are established for the m-linear Calderón-Zygmund operator and the corresponding maximal operator.It