摘要
通过对厦门港海域1986年9月14—20日所取非扰动沉积岩芯的分析测定,标志出岩芯的沉积年代,进而追溯了厦门港海域DDT的污染历史。实验结果表明,DDT在该海域的污染水平呈波动变化,大约10年左右出现一个污染高峰。文中还估算了不同时间尺度由上覆水进入沉积物界面的沉积通量。估算得1985—1986年间本海域DDT的沉积通量在0.86×10^(-5)—6.13×10^(-5)g/(m^2·a)之间;而自DDT大量使用这40余年来,在该海域的年均沉积通量在1.84×10^(-5)—21.59×10^(-5)g/(m^2·a)之间。
Analysis of undisturbed sedimentary cores sampled at Xiamen Harbour sea areas in 7.14-20, 1986 was carried out for identification of sedimentation chronology of the cores and tracing DDT pollution history at Xiamen sea areas. The results indicated that DDT pollution level at this sea area varied with a pollution peak about every 10 years. Sedimentary input fluxes from overlying water into sediment interface for different time scale were also calculated. The sedimentary fluxes of DDT during 1985-1986were between0.86×10-5-6.13×10-5g/(m2·a> for this sea area; average annual input at this sea area ranged 1.84×10-5-21.59×10-5g/(m ·a) in the past 40 years.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1992年第2期133-137,共5页
Oceanologia Et Limnologia Sinica
关键词
厦门港
DDT
污染
历史
沉积通量
Pollution history, sedimentary feux, wave of voriaty, sedimentation rate.
