沿岸海水および間隙水中の溶存態核酸塩基

概要

論文の詳細を見る
Purine and pyrimidine are important chemical components of organisms. These are thought to play an important role on marine ecosystem and organic geochemistry. Therefore, cleanup procedures were developed for the determination of these bases in seawater and pore water. The separation with molecular weight and determination methods of purine and pyrimidine bases were developed by dialysis and HPLC, respectively. Seawater and pore water samples were collected from Harima-Nada, the Seto Inland Sea, Japan. The total dissolved purine and pyrimidine concentrations were 0.44-1.05 μgl^<-1> in seawater and 1.63 μgl^<-1> in pore water, respectively. Dissolved-free bases were found abundantly (≃90%) in seawater samples. On the other hand, high- molecular weight fraction (HMWF ≧ 10,000M.W.) bases accounted for 73% of the total dissolved bases in pore water. Uracil is a predominant base in both seawater and pore water. The "apparent production rate" of dissolved free nucleic acid bases was estimated with vertical diffusion coefficient of seawater, to be 0.06 μgl ^1h^1.
日本地球化学会の論文
1987-06-30