渭河关中段表层水中抗生素污染特征与风险
发布时间：2018-09-04 18:00
【摘要】：采用HPLC/MS/MS方法对渭河关中段(咸阳至西安)表层水体中的抗生素进行了检测分析.水样中共检测出5类15种抗生素,检出率在12.5%~100%,检出浓度nd~270.60ng/L.与国内外其他水域相比,渭河关中段表层水体中抗生素检出浓度处于中等水平.检测出的所有抗生素中,磺胺类(包含磺胺增效剂)7种,平均浓度113.68ng/L;大环内酯类3种,平均浓度111.79ng/L;喹诺酮类3种,平均浓度20.55ng/L;林可酰胺类和四环素类各1种,平均浓度分别为23.81和25.66ng/L.磺胺类和大环内酯类为渭河关中段水体中的主要抗生素.磺胺类抗生素的分布呈现上游中游下游,大环内酯类呈现中游下游上游.来源分析表明禽畜养殖和水产养殖是大环内酯类中游浓度较高的主要原因.而磺胺类残留则在于生活污水和医疗废水排放及禽类养殖.抗生素浓度与渭河同步水污染指标进行相关性分析,水体中ρ(ETM)(红霉素)与ρ(TN)、ρ(CFX)(环丙沙星)和ρ(CTM)(克拉霉素)与ρ(NH3-N)呈显著相关,其他抗生素没有明显的相关关系.通过风险商值RQs对渭河关中段的抗生素残留进行评价,环丙沙星(CFX)、氧氟沙星(OFX)和磺胺甲VA唑(SMX)的RQs≥1,对相应物种表现为高风险;诺氟沙星(NFX)、土霉素(OTC)、罗红霉素(RTM)的0.1≤RQS1,对相应物种则表现为中等风险.
[Abstract]:HPLC/MS/MS method was used to detect and analyze antibiotics in the surface water of Weiheguan (Xianyang to Xi'an). A total of 5 kinds of 15 antibiotics were detected in water samples, and the detectable rate was 12. 5% and 100%, and the concentration of nd~270.60ng/L. was detected. Compared with other water areas at home and abroad, the concentration of antibiotics detected in surface water of Guanzhong section of Weihe River was at medium level. Of all the antibiotics detected, 7 were sulfonamides (including sulfonamide synergists) with an average concentration of 113.68 ng / L; three macrolides with an average concentration of 111.79 ng / L; three quinolones with an average concentration of 20.55 ng / L; and one type of lincomam and one type of tetracycline, The average concentrations were 23.81 and 25.66 ng / L, respectively. Sulfonamides and macrolides are the main antibiotics in the Guanzhong section of Weihe River. The distribution of sulfanilamide antibiotics in upper middle reaches and lower reaches, macrolides in middle reaches and lower reaches. Source analysis showed that livestock and aquaculture were the main reasons for the high concentration of macrolides in the middle reaches. Sulfanilamide residue lies in domestic sewage and medical wastewater discharge and poultry farming. Correlation analysis between antibiotic concentration and synchronous water pollution index of Weihe River showed that 蟻 (ETM) (erythromycin), 蟻 (TN), 蟻 (CFX) (ciprofloxacin) and 蟻 (CTM) (clarithromycin) were significantly correlated with 蟻 (NH3-N), but there was no significant correlation between other antibiotics. The antibiotic residues in Guanzhong section of Weihe River were evaluated by risk quotient (RQs). The RQs of ciprofloxacin (CFX), ofloxacin (OFX) and sulfamethoxazole (SMX) was 鈮，
本文编号：2222927
[Abstract]:HPLC/MS/MS method was used to detect and analyze antibiotics in the surface water of Weiheguan (Xianyang to Xi'an). A total of 5 kinds of 15 antibiotics were detected in water samples, and the detectable rate was 12. 5% and 100%, and the concentration of nd~270.60ng/L. was detected. Compared with other water areas at home and abroad, the concentration of antibiotics detected in surface water of Guanzhong section of Weihe River was at medium level. Of all the antibiotics detected, 7 were sulfonamides (including sulfonamide synergists) with an average concentration of 113.68 ng / L; three macrolides with an average concentration of 111.79 ng / L; three quinolones with an average concentration of 20.55 ng / L; and one type of lincomam and one type of tetracycline, The average concentrations were 23.81 and 25.66 ng / L, respectively. Sulfonamides and macrolides are the main antibiotics in the Guanzhong section of Weihe River. The distribution of sulfanilamide antibiotics in upper middle reaches and lower reaches, macrolides in middle reaches and lower reaches. Source analysis showed that livestock and aquaculture were the main reasons for the high concentration of macrolides in the middle reaches. Sulfanilamide residue lies in domestic sewage and medical wastewater discharge and poultry farming. Correlation analysis between antibiotic concentration and synchronous water pollution index of Weihe River showed that 蟻 (ETM) (erythromycin), 蟻 (TN), 蟻 (CFX) (ciprofloxacin) and 蟻 (CTM) (clarithromycin) were significantly correlated with 蟻 (NH3-N), but there was no significant correlation between other antibiotics. The antibiotic residues in Guanzhong section of Weihe River were evaluated by risk quotient (RQs). The RQs of ciprofloxacin (CFX), ofloxacin (OFX) and sulfamethoxazole (SMX) was 鈮，
本文编号：2222927
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