書誌事項
- タイトル別名
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- コウスイ ニ フクマレル ムキ セイブン ノ カガクテキ トクチョウ ダイ 6
- Chemical characteristics of Inorganic Constituents in precipitation (VI)
- コウスイ ニ フクマレル ムキ セイブン ノ カガクテキ トクチョウ ダイ6ホウ
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論文(Article)
The characterization of the precipitation in Yonezawa was investigated and discussed. The precipitation samples from May 1989 to March 1996 in Yonezawa every rainfall and snowfall were analyzed concerning pH, electric conductivity (EC) and concentration of major ions (Na+, K+, NH4+ , Ca2+, Mg2+, Cl-, NO3- and SO42-). The results of the annual data observed in Yonezawa were as fol1ows : (1) the annual means of pH are decreasing down and the one of EC are increasing over gradually every year after 1992 in Yonezawa. This suggests that the atmosphere around us becomes worse. (2) On monthly total concentration of major ions in precipitation, the concentration in spring, March or April became high remarkably. This was dependent on the pollutants from the soil in thaw or yellow sand transported by a west wind. (3) It was found that the precipitation collected in Yonezawa from l989 to 1992 was clearer in three blocks of sampling stations, facing the Sea of Japan, the Pacific Ocean and the Inland Sea of Seto from Phase-II study of Acid Precipitation Survey over Japan by Japan Environmental Agency.
収録刊行物
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- 山形大学紀要.工学
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山形大学紀要.工学 24 (2), 95-100, 1997-01-31
山形大学
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詳細情報 詳細情報について
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- CRID
- 1050564288440575232
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- NII論文ID
- 110000354592
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- NII書誌ID
- AN00242991
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- ISSN
- 0085834X
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- NDL書誌ID
- 4170214
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- 本文言語コード
- ja
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- 資料種別
- departmental bulletin paper
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- データソース種別
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- IRDB
- NDL
- CiNii Articles