| 我国土霉素的淡水生物水质基准与标准及生态风险评估研究 |
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| 引用本文： | 司静宜,洪亚军,夏鹏,白英臣,冯承莲.我国土霉素的淡水生物水质基准与标准及生态风险评估研究[J].环境科学研究,2023,36(2):403-413. |
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| 作者姓名： | 司静宜 洪亚军 夏鹏 白英臣 冯承莲 |
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| 作者单位： | 1.中国环境科学研究院，环境基准与风险评估国家重点实验室，北京 100012 |
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| 基金项目： | 国家自然科学基金面上项目(No.41573130)；中央公益科研院所基本科研项目(No.2021YSKY-02) |
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| 摘 要： | 土霉素是一种典型的抗生素类新污染物，具有使用量大、生态毒性强等特点，其环境基准标准和水生态风险受到学界广泛关注.本文基于美国毒理数据库、Web of Science、中国知网等相关数据库，收集整理了土霉素对我国淡水生物的毒性数据和水环境暴露数据，制定了保护淡水生物的水质基准，并进行了风险评估.结果表明：(1)依据《中国动物志》和《淡水生物水质基准推导技术指南》等，对毒性数据的物种和试验条件进行筛选，最终土霉素急性毒性数据涉及5门10科13种，最敏感物种为模糊网纹溞(Ceriodaphnia dubia)；慢性数据涉及3门9科10种，最敏感物种为水蕴草(Egeria densa).(2)物种敏感度分布法研究表明，急性数据符合逻辑斯蒂分布模型，推导出的短期水质基准为61.2μg/L；慢性毒性数据符合正态分布模型，推导出的长期水质基准为18.7μg/L.(3)毒性百分数排序法推导的基准最大浓度为34.0μg/L，基准连续浓度为7.4μg/L.(4)共搜集近15年(2007年1月—2022年3月)我国主要水体土霉素浓度数据803条，浓度范围为0.1～97 433.8 ng/L，北方流域的土霉素...
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| 关 键 词： | 土霉素 水质基准 物种敏感度分布法 水生态风险评估 |
| 收稿时间： | 2022-06-16 |
Water Quality Criteria/Standards and Ecological Risk Assessment of Oxytetracycline for Freshwater Organisms in China |
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| Affiliation: | 1.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China2.College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China3.School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China |
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| Abstract: | Oxytetracycline is a typical new antibiotic contaminant, which has the characteristics of wide usage and strong ecotoxicity. Its environmental criteria, standards, and environmental risks have been widely concerned by academic research. In the ECOTOX, Web of Science, CNKI and other relevant databases, the toxicity data of oxytetracycline to freshwater organisms and water environment exposure data in China were collected, the water quality standards for the protection of freshwater organisms were derived, and risk assessment was carried out. The results showed that: (1) The species and experimental conditions of the toxicity data were screened according to ‘Zoology of China ’ and ‘Technical guidelines for derivation water quality criteria for freshwater organisms ’. The acute toxicity data of oxytetracycline involved 13 species of 10 families in 5 phyla, and the most sensitive species was Ceriodaphnia dubia; the chronic data involved 10 species of 9 families in 3 phyla, and the most sensitive species was Egeria densa. (2) The study of species sensitivity distribution method showed that the acute data conformed to the logistic distribution model, and the short-term criteria was 61.2 μg/L. The chronic toxicity data conformed to the normal distribution model, and the long-term criteria was 18.7 μg/L. (3) The criteria maximum concentration derived by the toxicity percentage ranking method was 34.0 μg/L, and the criteria continuous concentration was 7.4 μg/L. (4) A total of 803 oxytetracycline concentration data in major water bodies in the past 15 years ( from January 2007 to March 2022) were collected, with a concentration range of 0.1-97,433.8 ng/L. The concentration of oxytetracycline in the northern watershed of China is generally higher than that in the south. Using the risk entropy method and the probability method, the research shows that the environmental risk of oxytetracycline pollution to freshwater organisms in China is generally low, and only the Ziya River tributaries of the Haihe River have higher ecological risks (risk entropy RQ>1). Combined with the criteria and the characteristics of pollution in China, According to the comprehensive evaluation, the recommended value of oxytetracycline surface water environmental quality standard for protecting freshwater organisms is 18.7 μg/L. Therefore, the results of this study can be used as a reference for environmental management, risk assessment of new contaminants such as oxytetracycline, and the formulation of water quality standards for the protection of native species. |
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