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甲府市街地河川水質のpH値等の変動に関する一考察
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Water quality survey of rivers in urban area in Kofu shows a yearly remarkable decrease in BOD and increase in pH at Shorobashi station. Those years high BOD concentration larger than 10 mg/l made the station fall out of the categories in environmental water quality standards, but these years the station falls out of the categories mainly because of high pH larger than 8.5. Since carbonic acid assimilation by aquatic algae seems to be a cause of high pH, investigation of whole day and seasonal
doi:10.34429/00001637
fatcat:l7jp2n6usrbolmoq3k3ro2w7xe