Analysis of the characteristics of micro- and nanoplastics exposure to Chinese population via ingestion and inhalation
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摘要:
目的 分析中国居民经食物摄入和空气吸入微纳塑料(micro- and nanoplastics, MNPs)暴露特征。 方法 使用关键词检索PubMed、Web of Science、Scopus、中国知网和万方数据知识服务平台等国内外数据库,建立数据集,结合中国人群食物消费量和人体呼吸参数,计算中国居民经食物摄入和空气吸入的MNPs暴露量,与国外数据比较分析其MNPs暴露特征。 结果 分析来自28篇研究的4 511个样本数据显示,中国居民每年摄入约187 000~328 000个MNPs,考虑空气吸入,每年MNPs暴露量为192 000~335 000个MNPs,均高于美国居民暴露量。男性成年人MNPs摄入量最高。生活饮用水、海产品、瓶装水和空气是中国居民每日主要MNPs暴露源。中国居民经食物摄入MNPs类型以聚乙烯、聚丙烯和聚对苯二甲酸乙二酯为主,而经空气吸入MNPs类型以聚对苯二甲酸乙二酯、尼龙和聚丙烯腈为主。 结论 相比于美国居民,中国居民具有更高的MNPs暴露风险,削减饮用水和海产品中MNPs含量,可有效降低中国居民MNPs暴露风险。 Abstract:Objective To analyze the characteristics of Chinese population exposure to micro- and nanoplastics (MNPs) via food ingestion and air inhalation. Methods Articles published up to April 2020 were searched in PubMed, Web of science, Scopus, China National Knowledge Infrastructure, Wanfang and Weipu databases. Then, the exposure levels of MNPs by food ingestion and air inhalation pathways were caculated by referring to the Chinese population food consumption and breathing rates data. The exposure characteristics of MNPs were evaluated between Chinese and foreign population. Results A total of 4 511 samples data from 28 studies were retrieved. Annual consumption of MNPs among Chinese population were estimated to range from 187 000 to 328 000 particles for food ingestion depending on age and sex and increase to 192 000 and 335 000particles when air inhalation is also considered, which were larger than those of American persons. Ingestion MNPs posed largest health risk to male Chinese adults. Drinking water, seafood, bottled water as well as air represented four substantial vectors of daily MNPs expsoure. The main types of MNPs were polyethylene, polypropylene and polyethylene terephthalate for ingestion expsosure while polyethylene terephthalate, polyamide and Polyacrylonitrile for inhalation exposure. Conclusions Ingestion and inhalation of MNPs posed higher health risk to Chinese population in comparison to that of American population. The attempt to lower the MNPs levels in drinking water and seafood would represent the most effective means to help reduce the MNPs exposure risk to Chinese residents. -
Key words:
- Microplastics /
- Nanoplastics /
- Ingestion /
- Inhalation /
- Chinese population
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表 1 食物和环境介质中微纳塑料检测数据质量评分细则
Table 1. Rules for scoring the quality of MNPs testing data in food and environmental media
评价指标 高(2分) 中(1分) 低(0分) 采样方法 详细描述或给出依据的规范或标准 简单描述 未给出 样本含量 每种类别>30 总共>30 未给出或<30 样本运输 4 ℃低温运输 常温运输 现场处理样品 实验室准备 穿棉质实验服、严格洗涤和漂洗实验设备 仅擦拭设备表面、阴性对照检查污染 未采取防护措施 实验室处理 有前处理及具体方法 有前处理但无具体方法 无前处理步骤 清洁空气条件 清洁空气条件 未指出,但有阴性对照检查污染 未给出 阴性对照 每批样品≥3份重复空白 简单的空白对照 无阴性对照 阳性对照 ≥3份测定微纳塑料加标回收率 仅对方案设计中一部分进行阳性对照 无阳性对照 样本检测 全部采集样品 非全部采集样品 不清楚 聚合物鉴定 热分析法或光谱分析法 视觉识别 -
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