The Study on Endocrine Disrupting Chemicals Removal Features in Ping Shan Tou Waterplant of Huainan City
|School||Anhui University of Technology|
|Keywords||Endocrine disruptors Environmental hormones Solid Phase Extraction High Performance Liquid Chromatography|
Environmental endocrine disruptors, also known as environmental hormones, exogenous chemicals, synthetic chemicals and natural plant compounds. Such compounds through the food chain into the living body and mimic hormones (hormones) directly stimulate or inhibit the endocrine system, which would seriously interfere with normal hormone to maintain homeostasis and regulation during the development of the role of reproductive and developmental and behavioral abnormalities. In recent years, with plastic products, chemical raw materials, synthetic chemicals, mass production and use, endocrine disruptors continue to enter the environment has become a global social problems, a growing cause for concern, especially with regard to water bodies endocrine disruptor research is becoming a hot spot. The thesis for the study of different treatment process section of the body of water in Huainan City flat hills waterworks, concentrated water samples by solid-phase extraction (SPE) enrichment method and HPLC analysis method, is widespread concern of drinking water four kinds of phthalate esters (DMP.DEP.DBP.BBP) and ethinyl estradiol (EE2), estrogen ketone (E1), bisphenol A (BPA), nonylphenol (NP) of eight species belonging to environmental endocrine disruptors substances were detected. The results are as follows: 1 water samples using solid phase extraction method, phthalate esters, ethinyl estradiol, estrone, bisphenol A and nonylphenol environmental endocrine disruptors HLB solid phase extraction concentrated enrichment method of water samples. 2 established a Hitachi D-2000 the Elite is High Performance Liquid Chromatograph Waters four kinds of phthalate esters, ethinyl estradiol, estrone, bisphenol A and nonylphenol chromatographic conditions, the ultrapure water plus The recoveries were greater than 90%, so this method can be accurate quantification of endocrine disruptors in water. Concentrations of endocrine disruptors in water abscissa detection peak area for the vertical axis, the standard curve. The standard curve obtained good linear correlation coefficient greater than 0.9950. 4. Optimum operating conditions, the signal-to-noise ratio S / N = 3, 4 water samples phthalates in the detection limit in O.10μg / L ~ 0.14μg / L, ethinyl estradiol, estrone, the detection limit were the limit of detection of the 0.60ng / L and 1.11ng / L, bisphenol A and nonylphenol were 0.01μg / L and 0.02μ g / L, respectively. 5 to investigate the source water of Huainan City flat hills waterworks, endocrine disruptors processing unit segment of the traditional water purification process water pipe network water, DMP half of the water samples detected, the rest of the water samples were not seized a detection rate of 50%, the concentration of 0.045 μg / L ~ 0.041μg / L; DEP is detected only in the drinking water sources, the rest of the water sample is not detected, the concentration to 0.021μg / L; remaining six kinds of endocrine disruptors was purified in each of the water samples were 100% detectable, concentrations were: BBP concentration of 0.257μg / L ~ 0.660μg / L, DBP concentration is 1.702μg / L ~ 2.857μg / L, ethinyl estradiol concentration of 0.126μg / L ~ 0.305μg / L, the concentration of estrone 0.158μg / L ~ 0.315μg / L, and the concentration of bisphenol A is 0.041μg / L ~ 0.084μg / L, the nonylphenol concentration is 0.224μg / L ~ 0.323μg / L . The water plant water has been polluted to varying degrees by the typical endocrine disruptors, relevant departments should be given high priority. From detectable concentration, clear reservoir water administered by the network transport which most endocrine disruptors content of elevated, indicating the water into the water supply network in addition to water sources of water pollution, there is an important way of delivery conduit corresponding pollutants exudative. 7 coagulation and sedimentation, and chlorine disinfection process section of the removal of endocrine disruptors do not follow the law, flocculant dosing PAC coagulation and sedimentation process section contains impurities or water sources of endocrine disruptors in water flocculant interactions and the formation of a new endocrine disruptors. In the chlorination process, the bisphenol A and nonylphenol can be decomposed and generates toxic greater variety of byproducts. 8. Conventional drinking water treatment process for the removal of endocrine disruptors is very limited, therefore, the importance of timely research to improve the drinking water treatment process to improve the effective removal of endocrine disruptors in water of.