[长江口大气湿沉降中的营养元素]

[Nutrient elements in the atmospheric wet deposition in Changjiang River estuary].

作者信息

Zhang Guosen, Chen Hongtao, Zhang Jing, Liu Sumei

机构信息

College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, China.

出版信息

Ying Yong Sheng Tai Xue Bao. 2003 Jul;14(7):1107-11.

PMID:14587331

Abstract

In order to study the effects of atmospheric wet deposition on red tide, five kinds of nutrient elements were measured with 64 rainwater samples collected at Shengsi Archipelago from May 2000 to April 2001. The results showed that there were obvious differences between monthly average concentrations, due to the different resource and precipitation. The variation of seasonal fluxes suggested that the wet deposition might cause red tide except in winter. The annual concentrations of NO3-N, NH4(+)-N, NO2(-)-N, PO4(3-)-P and SiO3(2-)-Si were 20.23, 30.14, 0.11, 0.045 and 3.43 mumol.L-1, respectively, and their annual fluxes were 2.67 x 10(8), 3.98 x 10(8), 0.014 x 10(8), 0.0059 x 10(8) and 0.45 x 10(8) mol, respectively. Compared with river input, they were much more smaller.

摘要

为研究大气湿沉降对赤潮的影响，于2000年5月至2001年4月在嵊泗列岛采集了64个雨水样本，测定了其中5种营养元素。结果表明，由于来源和降水量不同，月平均浓度存在明显差异。季节性通量的变化表明，除冬季外，湿沉降可能引发赤潮。NO3-N、NH4(+)-N、NO2(-)-N、PO4(3-)-P和SiO3(2-)-Si的年浓度分别为20.23、30.14、0.11、0.045和3.43 μmol·L-1，它们的年通量分别为2.67×10(8)、3.98×10(8)、0.014×10(8)、0.0059×10(8)和0.45×10(8) mol。与河流输入相比，它们要小得多。