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A comprehensive characterization of ice nucleation by three different types of cellulose particles immersed in water

机译：通过浸入水中的三种不同类型的纤维素颗粒进行综合表征冰核的含量

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摘要

We present the laboratory results of immersion freezing efficiencies of cellulose particles at supercooled temperature (T) conditions.Three types of chemically homogeneous cellulose samples are used as surrogates that represent supermicron and submicron ice-nucleating plant structural polymers.These samples include microcrystalline cellulose (MCC), fibrous cellulose (FC) and nanocrystalline cellulose (NCC).Our immersion freezing dataset includes data from various ice nucleation measurement techniques available at 17 different institutions, including nine dry dispersion and 11 aqueous suspension techniques.With a total of 20 methods, we performed systematic accuracy and precision analysis of measurements from all 20 measurement techniques by evaluating T -binned (1 °C) data over a wide T range (-36 °C< T < -4 °C).Specifically, we intercompared the geometric surface area-based ice nucleation active surface site (INAS) density data derived from our measurements as a function of T , n_(s;geo)(T).Additionally, we also compared the n_(s;geo)(T) values and the freezing spectral slope parameter (1log.n_(s;geo)/=(T) from our measurements to previous literature results.Results show all three cellulose materials are reasonably ice active.The freezing efficiencies of NCC samples agree reasonably well, whereas the diversity for the other two samples spans -10 °C.Despite given uncertainties within each instrument technique, the overall trend of the n_(s;geo)(T) spectrum traced by the T -binned average of measurements suggests that predominantly supermicron-sized cellulose particles (MCC and FC) generally act as more efficient ice-nucleating particles (INPs) than NCC with about 1 order of magnitude higher n_(s;geo)(T).
机译：我们介绍了过冷温度（T）条件下纤维素颗粒浸没效率的实验室结果。使用化学均匀的纤维素样品的类型用作代表超微和亚微米凝聚植物结构聚合物的替代物。这些样品包括微晶纤维素（MCC ），纤维纤维素（Fc）和纳米晶纤维素（NCC）。我们沉浸式冷冻数据集包括来自17种不同机构的各种冰成核测量技术的数据，包括九种干散分散体和11个含水悬浮技术。总共20种方法，我们通过在宽T范围内（-36°C

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  • 来源
    《Atmospheric chemistry and physics》 |2019年第2期|共27页
  • 作者

    Naruki Hiranuma; Kouji Adachi; David M.Bell; Franco Belosi; Hassan Beydoun; Bhaskar Bhaduri; Heinz Bingemer; Carsten Budke; Hans-Christian Clemen; Franz Conen; Kimberly M.Cory; Joachim Curtius; Paul J.DeMott; Oliver Eppers; Sarah Grawe; Susan Hartmann; Nadine Hoffmann; Kristina H?hler; Evelyn Jantsch; Alexei Kiselev; Thomas Koop; Gourihar Kulkarni; Amelie Mayer; Masataka Murakami; Benjamin J.Murray;

  • 作者单位

    Department of Life Earth and Environmental Sciences West Texas A&

    M University Canyon TX USA;

    Meteorological Research Institute (MRI) Tsukuba Japan;

    Pacific Northwest National Laboratory Richland WA USA;

    Institute of Atmospheric Sciences and Climate National Research Council Bologna Italy;

    Center for Atmospheric Particle Studies Carnegie Mellon University Pittsburgh PA USA;

    Department of Earth and Planetary Sciences Weizmann Institute Rehovot Israel;

    Institute for Atmospheric and Environmental Science Goethe University of Frankfurt Frankfurt am Main Germany;

    Faculty of Chemistry Bielefeld University Bielefeld Germany;

    Max-Planck-Institut für Chemie Particle Chemistry Department Mainz Germany;

    Environmental Geosciences University of Basel Basel Switzerland;

    Department of Life Earth and Environmental Sciences West Texas A&

    M University Canyon TX USA;

    Institute for Atmospheric and Environmental Science Goethe University of Frankfurt Frankfurt am Main Germany;

    Department of Atmospheric Science Colorado State University Fort Collins CO USA;

    Institute for Atmospheric Physics University of Mainz Mainz Germany;

    Leibniz Institute for Tropospheric Research Leipzig Germany;

    Leibniz Institute for Tropospheric Research Leipzig Germany;

    Institute for Meteorology and Climate Research-Atmospheric Aerosol Research Karlsruhe Institute of Technology Karlsruhe Germany;

    Institute for Meteorology and Climate Research-Atmospheric Aerosol Research Karlsruhe Institute of Technology Karlsruhe Germany;

    Faculty of Chemistry Bielefeld University Bielefeld Germany;

    Institute for Meteorology and Climate Research-Atmospheric Aerosol Research Karlsruhe Institute of Technology Karlsruhe Germany;

    Faculty of Chemistry Bielefeld University Bielefeld Germany;

    Pacific Northwest National Laboratory Richland WA USA;

    Institute for Atmospheric Physics University of Mainz Mainz Germany;

    Meteorological Research Institute (MRI) Tsukuba Japan;

    Institute for Climate and Atmospheric Science School of Earth and Environment University of Leeds Leeds UK;

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  • 正文语种 eng
  • 中图分类 大气科学（气象学）;
  • 关键词

    A comprehensive characterization; ice nucleation; three different;

    机译：综合表征;冰核;三种不同;

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