Studies on Activity of Alkaline Phosphatase and Phosphorus Speciation in Sediments from Lake Hongfeng, China

Abstract:

Environmentally significant activity of alkaline phosphatase (APA), phosphorus loading and its species were determined in 14 sediment samples from Lake Hongfeng, one of the key drinking-water sources in Guizhou Province, China. The results of this research indicates that APA presented a high level and notable fluctuations with spatial variations in sediments, ranging from 8.712×10-5 to 25.667×10-5 mol of p-nitrophenol g−1•h-1, and the average value of total phosphorus (TP) in sediments from the lake was 1129.81 mg/kg (dry weight). The content of inorganic phosphorus (IP) was higher than that of organic phosphorus (OP), and the content of the iron/aluminum-bound phosphorus (Fe/Al-P) with phosphorus release risk was also high. In addition, the Pearson’s correlation analysis shows various correlations between APA and Ca-P, Fe/Al-P, OP and IP.

• Periodical: Advanced Materials Research (Volumes 113-116)
• Pages: 412-415
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.113-116.412
• Online since: June 2010
• Authors: Jia Jun Deng, Cui Hong Jiang, Ji Wei Hu, Xiong Hui Wei, Xian Fei Huang, Feng Liu
• Keywords: Alkaline Phosphatase Activity, Eutrophication, Phosphorus Speciation, Significance

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DOI: 10.3354/ame037237