摘要
于1988年5月—1989年2月,对东南极Vestfold丘陵地区沿海海域水体中的低分子挥发性脂肪酸的连续测定表明,该海域海水中的低分子挥发性脂肪酸主要以甲酸、乙酸、丙酸和丙烯酸为主,其含量明显呈季节性变化。变化范围分别为:甲酸0.4—7.0μmol/L;乙酸0.1—40.0μmol/L;丙酸0.7—128.0μmol/L和丙烯酸0.001—0.393μmol/L,最高浓度出现在夏季。通过对浮游植物的观察和二甲基硫的测定,揭示低分子挥发性脂肪酸主要来自微生物作用,其中丙烯酸直接来源于棕囊藻(Phaeocystis pouchetii)细胞繁殖生长过程中的代谢作用。
The lower molecular volatile fatty acids in samples taken from coastal water, Vestfold Hill, Antarctica were determined by HPLC in May 1989. The results showed that the major lower molecular volatile fatty acids are formic acid, acetic acid, propionic acid and acrylic acid in sea water and their concentrations presented seasonal variation during the year. The concentrations range 0.4-7.0 μmol/L, 0.1-40.0 μmol/L, 0.7-128.0 μmol/L and 0.001-0.393μmol/L for formic acid, acetic acid, propionic acid and acrylic acid, respectively.We suggest that lower molecular volatile fatty acids are produced by microbial effect and acrylic acid is as a result of cells metabolism during Phaeocystis pouchetii bloom.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1992年第6期599-605,共7页
Oceanologia Et Limnologia Sinica
基金
澳大利亚南极基础研究课题 DV/21/89号
关键词
南极
沿海
脂肪酸
冷水环境
Antarctic, Coastal water, Fatty acid.
