南京市蔬菜中滴滴涕和六六六的残留及摄食暴露分析
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张倩倩1,2,
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夏忠欢1,2,3,4, , ,
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吴敏敏1,2,
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周彦池1,
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殷婧1,
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刘津1,
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杨浩2,3,4
作者简介:
张倩倩(1992-),女,河南许昌人,硕士研究生,研究方向为污染物的环境行为及生态与健康风险评价,E-mail:18733188545@163.com
- 1. 南京师范大学环境学院 江苏省物质循环与污染控制重点实验室, 南京 210023;
- 2. 虚拟地理环境教育部重点实验室(南京师范大学), 南京 210023;
- 3. 江苏省地理信息资源开发与利用协同创新中心, 南京 210023;
- 4. 江苏省地理环境演化国家重点实验室培育建设点, 南京 210023
关键词:
- 滴滴涕 /
- 六六六 /
- 蔬菜 /
- 残留量 /
- 摄食暴露
摘要: 为研究有机氯农药在食物中的残留及人群的摄食暴露，在2015年5月采集了南京市居民普遍食用的10种蔬菜，利用气相色谱-质谱联用仪(GC-MS)进行检测。研究表明滴滴涕(DDTs)和六六六(HCHs)在蔬菜中均有检出，∑DDTs的残留量为1.78～5.29 ng·g-1，∑HCHs的残留量为0.21～4.77 ng·g-1，其中∑10OCPs (有机氯农药)含量最高的蔬菜是藕(10.07 ng·g-1)，含量最低的是青菜(2.32 ng·g-1)。通过来源分析发现，蔬菜中DDTs可能有新的输入，而HCHs则主要源于历史残留。通过对不同人群的每日摄取量(EDI)进行摄食暴露分析发现，儿童的摄食暴露量要高于同性别其他年龄段人群，在儿童和未成年阶段，男性的暴露量普遍高于女性，而在成年和老年阶段，男性的暴露量低于女性。平均而言，各年龄段人群对γ-HCH和DDTs的日均口摄暴露量(EDI)值远低于联合国粮农组织和世界卫生组织(FAO/WHO)所规定的ADI值，表明在目前蔬菜消费量下，南京市居民通过摄入蔬菜引起的健康风险水平较低。
Residue and Dietary Exposure of DDTs and HCHs in Vegetables in Nanjing
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Zhang Qianqian1,2,
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Xia Zhonghuan1,2,3,4, , ,
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Wu Minmin1,2,
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Zhou Yanchi1,
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Yin Jing1,
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Liu Jin1,
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Yang Hao2,3,4
Corresponding author: Xia Zhonghuan, zhhxia@njnu.edu.cn ;
- 1. Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Environment, Nanjing Normal University, Nanjing 210023, China;
- 2. Key Laboratory of Virtual Geographic Environment(Nanjing Normal University), Ministry of Education, Nanjing 210023, China;
- 3. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China;
- 4. State Key Laboratory Cultivation Base of Geographical Environment Evolution(Jiangsu Province), Nanjing 210023, China
- Received Date:
2015-11-15
Fund Project:
Abstract: To determine the organochlorine pesticide residues in food and assess the consequent ingestion exposure for the population in Nanjing, 10 kinds of vegetables that are widely consumed by the local residents were commercially collected in May 2015. Concentrations of DDTs and HCHs were determined using gas chromatography-mass spectrometry (GC-MS). DDTs and HCHs were detectable in all kinds of vegetables, and the residual amounts of ∑DDTs and ∑HCHs were 1.78-5.29 ng·g-1 and 0.21-4.77 ng·g-1 respectively. The highest residual ∑10OCPs was 10.07 ng·g-1 in lotus root and the lowest was 2.32 ng·g-1 in greens being. Source analysis suggested that recent application of DDTs probably contributed to its residual, whereas HCHs were mainly derived from the historical vestigital. Estimated daily intakes (EDI) of both DDTs and HCHs for children were higher than other age groups of the same gender. With respect to gender, dietary exposure to males was higher than that to females in children and adolescents, whereas lower in adults and old-ages. The daily intakes of γ-HCH and DDTs for all groups were far below the acceptable amounts suggested by the Food and Agriculture Organization of the United Nations/World Health Organization, indicating a low risk level for local residents under the current amount of vegetables consumption.
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