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천연물 / 유기화학 : 혐기와 호기 상태의 물과 토양에서 pH, PO4-P, 탁도, T-P 농도 관계
민영홍 ( Young Hong Min ),강삼우 ( Sam Woo Kang ),이회선 ( Hoi Seon Lee ),정남현 ( Nam Hyun Chung ) 한국응용생명화학회 2011 Journal of Applied Biological Chemistry (J. Appl. Vol.54 No.3
This research was carried out to elucidate the impacts of dissolved oxygen (DO) concentration to phosphorus release mechanism from soil into water in lakes. PO4-P contributed to the growth of the total phosphorus (T-P). PO4-P was steadily increasing because water was accumulating PO4-P. T-P was closely related to turbidity, pH, and DO. We found that DO had decreased because DO was consumed in organic matter decomposition, and that the resulting anaerobic decomposition occurred whenever water had run out of DO. We also found that pH had decreased sharply by production of organic acid by the anaerobic decomposition and that T-P decreased because a decrease in pH removed turbidity by precipitation. T-P was dissolved without microbial decomposition. This mechanism was of great importance in lakes because phosphorus is released from soil into water.