Recent Characteristics of Fog Water Chemistry at Mt. Tateyama, Central Japan: Recovery from High Sulfate and Acidity

被引：0
|
作者：
Koichi Watanabe
Jiujiu Ji
Hideyuki Harada
Yutaro Sunada
Hideharu Honoki
机构：
[1] Toyama Prefectural University,Department of Environmental and Civil Engineering, Faculty of Engineering
[2] Toyama Science Museum,undefined
来源：
Water, Air, & Soil Pollution | 2022年 / 233卷
关键词：
Fog water; Mt. Tateyama; Acid fogs; SO; SO; emissions;
D O I：
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学科分类号：
摘要：
Measurements of chemical compositions in the fog water at Murododaira (36.6°N, 137.6°E, altitude 2450 m), Mt. Tateyama, on the Sea of Japan side of central Japan, were performed mainly in autumn, and the characteristics of chemical climatology before 2010 and after 2017 were compared. Strong acid fogs that were sometimes detected before 2010 were not observed after 2017, and the pH of the fog water increased. Since 2017, the concentration of SO42− in the fog water has decreased significantly, and it has been observed that the fog water tends to be purified. There was no significant difference in the concentrations of ionic components except H+ and SO42− between before 2010 and after 2017. The nssSO42−/NO3− ratio in the fog water was high before 2010 but has decreased in recent years. The large reduction in SO2 emissions in China in the 2010s has had a major impact on the fog water chemistry at Mt. Tateyama.
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