Scientific research confirms the harmful effects of airborne cyanobacteria and microalgae. However, determining human exposure to these microorganisms remains a challenge. The six-stage Tisch impactor was used to collect bioaerosols from April to September 2020 in the coastal zone of the southern Baltic. The MPPD model was used for estimation of regional, lobar, and generation deposition of microorganisms in human respiratory tract. The mass deposition fraction of cyanobacteria and microalgae in the head region gradually increased with the aerosol size. The maximum deposition fractions in the trachea, bronchial, and the pulmonary region were found for particles between 2.1 and 3.3 μm. The contribution of cyanobacteria and microalgae was the highest in the head region. The majority of microorganisms found in pulmonary region dominated in particles smaller than 2.1 μm. Exposure to the ambient bioaerosols may have an adverse impact on the human health in the region of southern Baltic Sea.

中文翻译：

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空气中蓝藻和微藻在人体呼吸道中的沉积（波兰波罗的海沿岸地区）


科学研究证实了空气中的蓝细菌和微藻的有害影响。然而，确定人类与这些微生物的接触仍然是一个挑战。 2020 年 4 月至 9 月，六级 Tisch 冲击器用于在波罗的海南部沿海地区收集生物气溶胶。 MPPD模型用于估计人体呼吸道中微生物的区域、肺叶和世代沉积。随着气溶胶粒径的增大，头部区域蓝藻和微藻的质量沉积分数逐渐增加。气管、支气管和肺部区域的最大沉积分数为 2.1 至 3.3 μm 之间的颗粒。蓝藻和微藻的贡献在头部区域最高。肺部区域发现的大多数微生物以小于2.1μm的颗粒为主。暴露于周围的生物气溶胶可能会对波罗的海南部地区的人类健康产生不利影响。