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引用本文:罗军,王晓蓉,杨翃,郁建珍,杨龙元,秦伯强.太湖梅梁湾上空颗粒态磷浓度2003年春季的变化.湖泊科学,2005,17(2):151-156. DOI:10.18307/2005.0210
LUO Jun,WANG Xiaorong,YANG Hong,YU Jianzhen,YANG Longyuan,QIN Boqiang.Concentrations of Aerosol Phosphorus in Spring, 2003 above Meiliang Bay, Lake Taihu. J. Lake Sci.2005,17(2):151-156. DOI:10.18307/2005.0210
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太湖梅梁湾上空颗粒态磷浓度2003年春季的变化
罗军1, 王晓蓉1, 杨翃2, 郁建珍2, 杨龙元3, 秦伯强3
1.污染控制与资源化国家重点实验室, 南京大学环境学院, 南京210093;2.香港科技大学化学系, 香港九龙清水湾;3.中国科学院南京地理与湖泊研究所, 南京210008
摘要:
太湖水体氮磷营养盐的研究比较多,但对大气营养物质的输入研究方面仍鲜有报道.通过定期采集太湖梅梁湾地区上空颗粒物,测定颗粒中各种形态磷(可溶性无机磷、有机磷、难溶性磷)浓度,探讨大气磷输入对梅梁湾水质的磷的贡献.结果表明2003年春季梅梁湾上空平均颗粒态磷浓度分别为0.157μg/m3,其中水溶性无机磷的含量在15.6%-51.0%.最后估算了春季大气总磷输入量,春季两次采样周期中大气磷沉降通量相差不大.进一步估算了大气总磷的沉降通量最大为0.57kg(hm2·a)(6.84t/a),显示大气沉降对太湖水体的影响.
关键词:    富营养化  太湖  大气沉降  梅梁湾
DOI:10.18307/2005.0210
分类号:
基金项目:国家自然科学基金项目(40110734)教育部科学技术项目(03079)联合资助.
Concentrations of Aerosol Phosphorus in Spring, 2003 above Meiliang Bay, Lake Taihu
LUO Jun1, WANG Xiaorong1, YANG Hong2, YU Jianzhen2, YANG Longyuan3, QIN Boqiang3
1.State Key Lab. of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210093, P. R. China;2.Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China;3.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P. R. China
Abstract:
Lake Taihu is one of the five largest freshwater lakes and also one of the most-studied and better-understood water bodies in China, There have been many studies on nutrient distribulion and concentrations in the water body;however, the amount and chemical forms of nutrients input from the atmosphere to Meiliang Bay are largely unknown.To fully understand and assess the impact of atmospheric P on water quality of Meiliang Bay, we have quantified the atmospheric input of P by measuring its concentrations in aerosols during spring of 2003.Aerosol samples were collected at eastern part of the lake for determination of phosphorus concentrations in the atmospheric aerosols.The aerosol P was spec-iated into soluble inorganic phosphorus, insoluble inorganic phosphorus, and organic phosphorus.The average concentrations of the lotal aerosol P in spring are 0.157 μg/m3.And about 15.6%-51.0% of atmospheric phosphorus is soluble inorganic phosphorus.Through estimating the flux of aerosol phosphorus to Meiliang Bay, we found that dry deposition of P has an important mipacl on the water quality of Meiliang Bay.
Key words:  phosphorus  eutrophication  Lake Taihu  aerosol  atmosphere  Meiliang Bay
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