Synthesis And Application Of Hydrophobic Porous Polymer In Analysis And Removal Of Steroid Hormones In Water Samples

Various evidences show that, as a special member of EDCs, steroids hormones persisted in the aquatic environment are closely associated to a series of human endocrine disorder even in a low concentration (<0.1ng/L). China is the largest country of producing and marketing birth control pills. These natural and synthetic steroid compounds produced general by human are mainly spiked into the sewage system, spreading into surface water and sediment. Therefore, the research of environmental steroid residues level and control technology is of great significance for the environment management and ecological protection.The first part is a review of synthesis of hydrophobic porous polymer and analysis and removal of steroid pollutants in water samples.In the second part, free-radical polymerization method was employed in synthetic polymer. Functional monomer, cross linking agent and solvent (porogen) were used for thermal polymerization by certain proportion in water bath to form hydrophobic porous polymer. The synthesis conditions were optimized. The effects of different solvents and different monomers on the polymer were tested. We find that porogen obviously affected the properties of polymers. The polymer has a strong adsorption capacity on hydrophobic compounds.In the third part, hydrophobic porous polymer was used in solid phase extraction. Five kinds of steroids E3, E2, E1, A, P were simultaneously enriched. A method of SPE-HPLC-UV was developed to separate and determinate those five steroids. This method with high precision and good repeatability meet the needs of the ordinary laboratory to carry out similarly detection. Real water sample was also tested through this method, higher recoveries than traditional SPE columns were achieved. In the forth part, the hydrophobic porous polymer was used as adsorbent. The influence of different dosing quantity and different initial concentrations of steroids were studied, the adsorption mechanism of adsorption under varies temperature and pH conditions were tested. The results presented that5kinds steroids can be efficiently removed in short time and with high adsorption capacity and the adsorption of hydrophobic porous materials to progesterone fitted the Langmuir model, dominated by surface adsorption. The temperature conditions had an effect on the adsorption process, neither does pH conditions.