摘要
目的分析快递员痰液和鼻腔冲洗液中微塑料含量,并描述其特征;评估人体呼吸道微塑料污染现状。方法随机选择9名快递员,采集其痰液和鼻腔冲洗液,用偏光显微镜观察疑似微塑料,记录其数量、长度、宽度及形状,计算其丰度。结果 9名快递员的痰液和鼻腔冲洗液中均检出微塑料,微塑料的平均丰度值分别为105.4和0.8个/g,以纤维状为主;痰液和鼻腔冲洗液中微塑料长度范围分别为20.5~2 476.8μm和50.8~6 200.0μm;宽度范围分别为<1.0~61.9μm和5.0~46.4μm。结论快递员痰液和鼻腔冲洗液中存在微塑料污染,痰液和鼻腔冲洗液中微塑料检测可用于人体呼吸道微塑料暴露负荷的简便、快捷评估。
Objective To explore the presence of microplastics in sputum and nasal lavage fluid collected from couriers and to describe the level and characteristics of the microplastics. Methods Nine male couriers were randomly recruited in Shenyang city, Liaoning province and sputum samples(> 3 ml) and nasal lavage fluid samples(by nasal irrigation with 20 ml ultra pure water) were collected among the couriers. The number, length, width and shape of the suspected microplastics in the samples were observed with a polarizing microscope. Results There were microplastics fibers in the samples of sputum and nasal lavage fluid collected from all of the couriers, with the average abundance of 105.4 and 0.8 per gram, respectively.The observed microplastics were mainly fibrous with the length ranging from 20.5 μm to 2 476.8 μm in the sputum samples and 50.8 μm to 6 200.0 μm in the nasal lavage fluid samples. The width of the microplastics was in the range from < 1.0 to 61.9 μm for those in the sputum samples and from 5.0 μm to 46.4 μm in nasal lavage fluid samples. Conclusion Suspected microplastics were observed in sputum and nasal lavage fluid samples collected from couriers. Further qualitative and quantitative study on the characteristics of the microplastics in the samples may assess the exposure load of microplastics in human respiratory tract simply and rapidly.
作者
那军
耿译航
蒋莹
马瑞雪
曹忠波
赵玉涛
韩金池
刘莉
孙炜
潘国伟
闫灵均
杨佐森
NA Jun;GENG Yi-hang;JIANG Ying(Liaoning Provincial Center for Disease Control and Prevention,Shenyang,Liaoning Province 110005,China;不详)
出处
《中国公共卫生》
CAS
CSCD
北大核心
2021年第3期451-454,共4页
Chinese Journal of Public Health
基金
辽宁省“兴辽英才计划”项目(XLYC1802059)。
关键词
微塑料
纤维
痰液
鼻腔冲洗液
microplastics
fiber
sputum
nasal lavage fluid
