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| 南四湖及主要入湖河流沉积物中磷的赋存形态研究 | |
| 引用本文： | 刘恩峰,沈吉,杨丽原,孙庆义,王建军.南四湖及主要入湖河流沉积物中磷的赋存形态研究[J].地球化学,2008,37(3):290-296. |
| 作者姓名： | 刘恩峰 沈吉 杨丽原 孙庆义 王建军 |
| 作者单位： | 1. 中国科学院,南京地理与湖泊研究所,湖泊与环境国家重点实验室,江苏,南京,210008 2. 济南大学,城市发展学院,山东济南,250022 3. 济宁市水利局,山东,济宁,272119 |
| 基金项目： | 国家自然科学基金，国家科技支撑计划，中国科学院所长基金 |
| 摘 要： | 应用沉积物磷形态SMT提取方法,分析了南四湖及主要入湖河流丰水季节表层沉积物、独山湖及微山湖区沉积岩芯中磷的含量及形态组成变化,研究了磷的埋藏演化过程与人为污染特征.结果表明,老运河表层沉积物中磷的含量最高,为13068.3 mg/kg,以OP及NaOH-P为主,其富集系数分别为6.5和9.0,主要是与来自济宁市的废水污染有关.其余表层沉积物以HCl-P为主;受人为污染的影响,NaOH-P、OP产生一定程度的富集,其富集系数分别为1.0.3.7、1.3～6.0;部分沉积物中高含量的有机质加重了OP的富集.独山湖及微山湖沉积岩芯中以HCl-P和OP为主;20世纪60年代末期以来,随着湖泊生产力的提高及早期成岩过程中有机质的矿化分解,独山湖及微山湖沉积岩芯中TOC含量自下而上呈指数增加,这也导致了沉积物中OP的增加;独山湖及微山湖沉积岩芯6～0 cm和5～0 cm较高的OP及NaOH-P含量,指示了20世纪80年代中期以来磷的人为污染过程. |
| 关 键 词： | 沉积物 磷形态 人为污染 南四湖 |
| 文章编号： | 0379-1726(2008)03-0290-07 |
| 修稿时间： | 2007年5月8日 |
Occurrence of phosphorus in sediments of Nansihu Lake and its main inflow rivers |
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| LU En-feng,SHEN Ji,YANG Li-yuan,SUN Qing-yi,WANG Jian-jun.Occurrence of phosphorus in sediments of Nansihu Lake and its main inflow rivers[J].Geochimica,2008,37(3):290-296. | |
| Authors: | LU En-feng SHEN Ji YANG Li-yuan SUN Qing-yi WANG Jian-jun |
| Abstract: | Phosphorus content and its species were studied for the surface sediments of Nansihu Lake and its main inflow rivers, and the core sediments of Dushan Lake and Weishan Lake, using the SMT sequential extraction method. The phosphorus contents in the surface sediment are 465.5-13068.3 mg/kg, with the maximum value in Laoyun River, which was due to the waste water pollution from Jining City. The enrichment factors of organic phosphorus (OP) and NaOH-P are 6.5 and 9.0, respectively. The contents of phosphorus in other surface sediments are relatively lower, and are mainly composed of HCl-P. The enrichment factors of NaOH-P and OP are 1.0-3.7 and 1.3-6.0, indicating a minor human pollution. The higher organic matter content aggravated the enrichment of OP. The phosphorus in the core sediment of Dushan Lake and Weishan Lake are mainly composed of HCl-P and OP. The increasing content of TOC in the core sediments was due to the growth of aquatic productivity and organic matter decomposition during the early diagenesis process, which also induced the increase of OP in the sediments since late 1960s. The higher content of OP and NaOH-P in the sediments of 6-0 cm and 5-0 cm for Cores DU3 and WS4 also indicated the human contamination since mid 1980s. |
| Keywords: | sediments phosphorus species pollution Nansihu Lake |
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