A plant growth chamber system equipped with aerosol generators for studying aerosol-vegetation interactions  

作　　者：Masao Gen Seiji Ikawa Masahiro Yamaguchi Fong Zyin Lim Takeshi Izuta I.Wuled Lenggoro 

机构地区：[1]Graduate School of Bio-Applications and Systems Engineering,Tokyo University of Agriculture and Technology,Koganei,Tokyo,184-8588,Japan [2]Institute of Multidisciplinary Research for Advanced Materials,Tohoku University,Sendai,980-8577,Japan [3]Faculty of Agriculture,Tokyo University of Agriculture and Technology,Fuchu,Tokyo,183-8509,Japan [4]Graduate School of Fisheries and Environmental Sciences,Nagasaki University,Nagasaki,852-8521,Japan [5]Institute of Agriculture,Tokyo University of Agriculture and Technology,Fuchu,Tokyo,183-8509 Japan [6]Department of Applied Physics and Chemical Engineering,Tokyo University of Agriculture and Technology,Koganei,Tokyo,184-8588,Japan [7]Institute of Global Innovation Research,Tokyo University of Agriculture and Technology,Fuchu,Tokyo,183-8509,Japan

出　　处：《Particuology》2024年第2期122-132,共11页颗粒学报（英文版）

基　　金：supported by Ministry of Education,Culture,Sports,Science,and Technology(MEXT)of Japan(Kakenhi Grant no.20120010,20120009,and 20120004);Japan Society for the Promotion of Science(JSPS)Kakenhi Grant(No.23560904,26420761,17K06903,18H02203 and 20K05188).

摘　　要：Understanding aerosol-vegetation interactions is vital in ecosystems.However,the interactions remain elusive partly due to the lack of suitable plant growth chamber systems.Particularly,deposition of submicron particles on leaf surfaces is challenging due to its low deposition velocities compared to larger particles.In this work,we present a plant-growth chamber that was used to study the effect of sub-micron black carbon(BC)particles on the growth and photosynthesis of plants.The chamber system simultaneously enables the growth of multiple plants in pots and the deposition of submicron particles onto them.Two spraying methods assisted by ultrasonic and electrostatic forces were employed as aerosol generators to realize the particle deposition.The flow regime inside the chamber was numeri-cally calculated to predict the transportation of aerosol particles,suggesting the optimal operating conditions of the chamber.The gas-phase particle size distribution measurements showed that gener-ated BC particles were suspended in submicron diameter ranges.The aerosol generators were examined in the chamber using three conductor and insulator substrates as a model of plant leaves.Microscope observations and spectroscopic analysis ascertained that submicron BC particles generated from our generators were deposited on all substrate surfaces.Using the developed chamber system,systematic studies can be performed to advance the fundamental understanding of aerosol-vegetation interactions.

关 键 词：AEROSOL Exposure chamber Spray drying Black carbon 

分 类 号：TB383[一般工业技术—材料科学与工程]