光谷科学岛沉积物中抗生素的分布特征及风险评价

Distribution Characteristics and Risk Assessment of Antibioticsin Sediments of Guanggu Science Island

抗生素排放到环境中引发的生态风险和健康风险不容忽视。为查明光谷科学岛地区沉积物中抗生素的分布特征及风险水平,在该区7个点位采集底泥样品,检测34种抗生素的浓度,采用风险熵值法评价沉积物中抗生素的生态风险和健康风险。结果表明,研究区南部靠近豹澥后湖区域的2个点位检出3种抗生素(磺胺氯哒嗪、克林霉素、恩诺沙星)并且均超标,检出率为28.57%;2个点位及附近存在中生态风险,其他地区不存在生态风险;1个点位及附近在长期暴露情况下,可能对儿童和婴幼儿造成低健康风险,其他地区对各年龄段人群均不存在健康风险。建议在研究区南部开展某些特定建设项目时,对抗生素污染情况作进一步调查研究。

The ecological risks and health risks caused by antibiotic emissions into the environment cannot be ignored.In order to find out the distribution characteristics and risk levels of antibiotics in the sediments of Guanggu Science Island,seven sediment samples were collected in this area,and the concentrations of thirtyfour antibiotics were detected.The ecological risk and health risk of antibiotics were evaluated by risk quotient method.The results shows that three antibiotics(SCP,CLM,ENR)are detected in two samples near the Baoxiehou Lake area in the southern part of the study area and exceeded the standard,with a detection rate of 28.57%.There are medium ecological risks in the two sites and their vicinity,and there is no ecological risk in other areas.One point and its vicinity may cause low health risk to children and infants under long-term exposure,and there is no health risk to people of all ages in other areas.It is suggested that further investigation and research on antibiotic pollution should be carried out in some specific construction projects in the south of the study area.