摘要
在厌氧沉积物中,随着有机物的分解,NH_4^+显著增加,其反应速率常数K_N=4×10^(-9)S^(-1);HPO_4~2有所增加,其含量小于6μmol/l,表明有机物分解产生的可溶性磷酸盐迅速转移到固相,本文中还估算了下列物质从沉积物到上覆水的扩散通量(μmol/m^2·month),结果得,Pb(Ⅱ):2.6、Cd(Ⅱ);0.87、Cu(Ⅰ):11、Zn(Ⅱ):20、NH_4^-;2.3×10~4、HPO_4^(2-):28.其中厦门西港的通量大于九龙江口。
The interstitial water chemistry of NH4+, HPO42- in the Xiamen, Bay sediments has been studied. With the organic matter in the anaerobic sediments decomposing, concentration of NH4+ increased rapidly to 2 mmol/12 (the constant of reaction rate KN=4×10-9s-1), while concentration of HPO42-increased to 6 μ mol/l. This may be caused by 2 reasons, 1. HPO42- produced by decomposition of organic matter was rapidly transferred from liquid to solid phase. 2. the organic matter in sediment was induced by pollutant source. The mean diffusion fluxes from sediments to overlying seawater were cvaluatdd to be (μ mol/m2·month): Pb(Ⅱ). 2.6, Cd(Ⅱ). 0.87、Cu(Ⅱ); 11 、Zn(Ⅱ);20、 NH4+2 2.3×104、HPO42-; 28. Among that, the fluxes in West Xiamen Bay were larger than in Jiulong Estuary.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
1989年第2期185-186,共2页
Journal of Xiamen University：Natural Science
关键词
厦门港
间隙水化学
Interstitial water chemisrry, Diffusion fluxes, Trace metals,NH4+, HPO42-, Xiamen Bay
