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东海沉积物间隙水中游离氨基酸含量的测定
纪明侯1, 李烈英1, 牛祝庆1, 张星君1
中国科学院海洋研究所
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FREE AMINO ACIDS IN THE INTERSTITIAL WATERS OF THE SEDLMENT OF EAST CHINA SEA
Abstract:
The distribution profile of free amino acid contents in the interstitial waters of sediment from northeast part of East China Sea was determined using amino acid analyzer.Among the 17 free amino acids determined, Serine, Glycine, Ornithine and Lysine were: always predominant in the interstitial waters regardless of the depth of collection. Most of the individual free amino acids and their total contents decreased gradually from surface layer (0-5cm) to the depth (15-20cm), their total contents being from 1367.8 μg/l to 847.6 μg/l, one to two orders higher than those in seawater. The total contents of neutral amino acids excluding acidic and basic ones were the most abundant, being about 50% of the total free amino acids, followed by basic and acidic ones, about 30% and 10%, respectively. The relation of the in situ environmental conditions of the station from which the sample collected with the contents of free amino acids in interstitial waters was discussed.
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