Distributions of free 2-Phenylethylamine, Putrescine, Spermidine, and Spermine in the East China Sea in summer of 2010
2010 年中国东海夏季游离态2-苯基乙胺、腐胺、亚精胺和精胺的分布

The concentrations of free 2-Phenylethylamine, putrescine, spermidine, and spermine in water samples collected from East China Sea in June 2011 were measured with HPLC. The results showed that the concentration of putrescine was the highest one ranging from 5.16 to 62.28 nmol/L, owning 62%±15% of total free polyamine. The concentration of Spermidine was the lowest ranging from 0 to 6.98 nmol/L, owning 6%±5% of total free polyamine. The concentrations of most polyamines were very high near the entrance of Changjiang River and the Hangzhou Bay. The contents of 2-Phenylethylamine, spermidine, and spermine in middle layer were all higher than those in the bottom layer, and the contents of putrescine in the bottom layer were higher than those in the surface layer. The polyamine concentration were relatively higher at the place where the red tide of Noctiluca scintillans occurred.