エアロゾル学会TAKAHASHI賞 AWARD (JAAST) “Deposition of submicron aerosols by a closed-loop flow system” 閉ループ式エアロゾル流によるサブミクロン粒子の沈着

沈着効率が悪い従来法に代わって本手法を気液界面細胞曝露に応用できれば有用である。Our method presented here may potentially be applied for the deposition and analysis of submicron particles on various types of substrate (i.e. air-liquid interface) without the need for vacuum imaging analysis (e.g. electron microscopy).

【植物とエアロゾル】作物・小松菜に水溶性微粒子を長期的に散布した After long-term spraying of water-soluble fine particles on a crop (komatsuna)…

Short Introductions of other papers: /paper/ Komatsuna plants were grown and exposed to ammonium sulfate (((NH4)2SO4), AS) submicron particles for 16 days (22.5 µg m−3 per day) in phytotrons. The amount of particles deposited on the leaf  decreased over time, because AS particles deposited on the leaf deliquesced, allowing ions such as SO42− in the…

【環境計測技術】表面電位顕微鏡で大気中から捕集した粒子の帯電状態を調べたCharging state of particles collected from the air by K-F Microscope.

呼吸により人体に入る微粒子の帯電状態が注目された。本研究では大気中に浮遊する微粒子の帯電状態を評価できる手法を考案。The importance of electrostatic charging state to particle deposition in the human airways has been suggested. We developed a measurement method of electrostatic charging state of individual ambient aerosol particles

【環境技術、材料合成】ココナツ殻由来素材の表面に微粒子を集積 Fine particles on bio-composite surface.

Other “intro” of papers from our lab >> /tag/paper/   HIGHLIGHTS:* Physical treatment on the biocomposite increases the surface roughness.* Single bond COOH network on the treated biocomposite promotes the particle deposition.* The network reduces the particles repulsion during the deposition process. # Bio-composite(バイオコンポジット)is a composite material formed by a matrix (resin) and a reinforcement of…

【環境技術】薄板の裏側まで微粒子が沈着?Are the particles deposited to the back of a sheet?

Simultaneous deposition of submicron aerosols onto both surfaces of a plate substrate by electrostatic forces We demonstrate one-step deposition of submicrometer-sized particles suspended in the gas-phase onto a plate type substrate using an electrostatic-assisted spray system. The particles were deposited on plate-type metallic surfaces, on both front and rear sides of the substrate. This “both-side”…

【植物と微粒子】2年間、水溶性微粒子を植物に与えたら?Effect of water-soluble particles on growth of plants (2 years)

JOURNAL: Atmospheric Environment (2014)http://www.sciencedirect.com/science/article/pii/S1352231014000405 Effects of 2-years exposure to (sub-micron) ammonium sulfate particles on growth and gas exchange rates of Fagus crenata (ブナ), Castanopsis sieboldii (スダジイ), Larix kaempferi (唐松) and Cryptomeria japonica (スギ) seedlings •No significant effect of the particles on growth was observed after 2 years.•Net photosynthetic rates of 3 species were not significantly changed.•Net photosynthesis of…

【植物と微粒子】森林へのエアロゾル沈着過程を解明. Deposition process of particles into forests

Particulate matter strongly adsorbed onto leaf surfaces is not washed away by rainfall and contributes to the EC (Elemental Carbon) flux. Leaf-surface particles must be included when evaluating the dry and total fluxes of particulate matter, in particular for water-insoluble constituents such as EC. 葉面に強く「付着」した粒子状物質は降雨によって洗い流されず、EC(元素炭素)フラックスに寄与する。粒子状物質、特にECのような水不溶性成分の乾燥流束および全流束を評価する場合には、葉表面粒子を含めなければならない。