Activation capability of water soluble organic substances as CCN
Activation capability of water soluble organic substances as CCN
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DOI：
10.1016/s0021-8502(02)00190-8
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发表时间：
2003-04-01
影响因子：
4.5
通讯作者：
Yamagata, S
中科院分区：
文献类型：
--
作者：
Hori, M;Ohta, S;Yamagata, S
通过室内实验测定了草酸铵、丙二酸、琥珀酸、戊二酸、己二酸、苹果酸和邻苯二甲酸等7种二羧酸类化合物的活化能力，并讨论了科勒理论的可预测性。实验结果表明，草酸铵的吸附能力最高，与硫酸铵相当，其次是苹果酸和邻苯二甲酸，而己二酸的吸附能力最低，接近不溶性颗粒的吸附能力。丙二酸和戊二酸在8-9%相对湿度的正常操作条件下被认为是蒸发的，但在补充湿润操作下分别表现出较高和中等的蒸发能力。琥珀酸的活化能力往往取决于实验室温度，但可能是高的，与苹果酸相当。颗粒干燥、相关的溶质蒸发、颗粒的形态和疏水性是理论预测和实验结果解释的关键因素。2003爱思唯尔科学有限公司版权所有。
The activation capability of seven dicarboxylic acid compounds, ammonium oxalate, malonic acid, succinic acid, glutaric acid, adipic acid, malic acid and phthalic acid, was determined by laboratory experiments, and predictability by the Kohler theory was discussed. Experimental results showed that ammonium oxalate had the highest capability comparable to that of ammonium sulfate, and malic acid and phthalic acid followed, whereas adipic acid exhibited the lowest capability close to that of an insoluble particle. Malonic acid and glutaric acid were considered to evaporate under normal experimental operations at 8-9% RH but exhibited high and moderate capability, respectively, under supplementary humid operations. The activation capability of succinic acid tended to depend on the laboratory temperatures but was possibly high, comparable to that of malic acid. Particulate drying, associated solute vaporization, morphology and hydrophobicity of particles could be key factors in the theoretical prediction and the interpretation of the experimental results. (C) 2003 Elsevier Science Ltd. All rights reserved.