摘要
以太湖为研究对象,研究了湖泊内源磷以磷化氢形态的释放问题。结果表明,湖泊沉积物中的磷主要以铁磷和钙磷形态存在。湖泊沉积物中磷化氢含量与总磷、溶解态磷、铁磷、钙磷、铝磷呈显著相关,与有机磷、闭蓄态磷、交换态磷相关性不显著,表明在沉积物各种形态磷转化为磷化氢的机制中,无机磷最有可能为磷化氢形成的前体物,磷化氢可能作为富营养化湖泊中磷的生物地球化学循环的一部分,参与沉积物磷的释放过程。
Distribution and correlation analysis of phosphorus in lake sediments were investigated. In lake sediments, iron phosphorus and calcium phosphorus are the main phosphorus species, The phosphorus species in lake sediments show distinct characters of spatial distribution, but have no obvious temporal variations. The correlation between phosphine and phosphorus suggests that the amount of phosphine（y） in the sediments is related to aluminum bounded phosphorus（x）, soluble phosphorus, total phosphorus, iron phosphorus and calcium phosphorus （x）. The correlation equation can be described as： y=ax＋b, r^2≥0.24（n=25）. The amount of phosphine has no obvious correlation with organic phosphorus, occluded phosphorus, exchange phosphorus and organic matter in sediments. So, inorganic phosphorus may most probably be the precursor of phosphine, and it thus plays an important role in the formation of phosphine. Phosphorus in lake sediments may be released by phosphine.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2006年第5期1328-1332,共5页
Journal of Agro-Environment Science
基金
广东省自然科学基金资助项目(05300186)
华南理工大学自然科学青年基金项目(G01-E5050730)
国家自然科学基金项目(20177007)
关键词
内源磷
磷化氢
释放
湖泊
sediment phosphorus
phosphine
release
