Ren Jingling, Liu Sumei, Zhang Jing, Xie Liang, Li Dandan, Cheng Yan, Zhu Dedi
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, China.
Ying Yong Sheng Tai Xue Bao. 2003 Jul;14(7):1117-21.
In recent years, eutrophication and frequently occurred harmful algal blooms (HAB) become serious in the coastal area near Changjiang River estuary, and the nutrients came from Changjiang River may be the main sources for them. Aluminum could be used as a useful tracer for the terrestrial input and the movement of different water mass, since it enters into the natural water with the erosion products of soil and rock, and its residence time in the ocean is short and uneasy to be disturbed by the activities of human being. Based on our results, the concentration of dissolved Al was higher in Autumn than in Summer, and showed some relationships with the salinity and suspended particulate matter (SPM). The concentration of Al in the HAB area was higher than 0.04 mumol.L-1, which showed the significant influence from the terrestrial input. The concentration of dissolved Al decreased nearly 40% after the occurrence of HAB, and the flocculation of dissolved Al and its absorption onto the surfaces of biogenic particles might be the main reasons. There still need further study about the variation of Al forms and its mechanism during the occurrence of HAB.
近年来，长江口附近沿海地区富营养化以及有害藻华频繁发生的情况愈发严重，而来自长江的营养物质可能是其主要来源。铝可作为陆地输入和不同水体运动的有效示踪剂，因为它随土壤和岩石的侵蚀产物进入天然水体，且在海洋中的停留时间较短，不易受到人类活动的干扰。根据我们的研究结果，溶解态铝的浓度秋季高于夏季，且与盐度和悬浮颗粒物（SPM）存在一定关系。有害藻华区域的铝浓度高于0.04 μmol·L-1，这表明受到了陆地输入的显著影响。有害藻华发生后，溶解态铝的浓度下降了近40%，溶解态铝的絮凝及其在生物源颗粒表面的吸附可能是主要原因。关于有害藻华发生期间铝形态的变化及其机制仍需进一步研究。
