Influence of dissolved organic nitrogen on Ni bioavailability in Prorocentrum donghaiense and Skeletonema costatum.
Dissolved organic nitrogen (DON) is an important nutrient in the aquatic environment. This study examined the influence of DON addition on the adsorption, absorption, and distribution in macromolecular forms of environmentally deleterious trace metal (Ni) in Prorocentrum donghaiense and Skeletonema costatum over eight days. Ni adsorption and absorption of two species increased with the addition of urea, while Ni adsorption and absorption of two species in the presence of humic substances (HS) decreased. Meanwhile, Ni adsorption and absorption of P. donghaiense were higher than that of S. costatum. Furthermore, Ni contents in the protein fraction of the cells, both in P. donghaiense and S. costatum, were increased with both urea and HS addition. Thus, urea and HS input could impact Ni biogeochemistry and bioavailability, and then affect the biodynamics thereafter.
College of Chemistry and Environmental Science, Minnan Normal University, Zhangzhou 363000, China; Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, China; Key Laboratory of Coastal and Wetland Ecosystems, Ministry of Education, Xiamen University, Xiamen 361005, China. Electronic address: huangxuguang@munu.edu.cn.
Xu-Guang
XG
Huang
Zhangzhou Experimental Middle School, Zhangzhou 363000, China.
Hao
H
Li
Key Laboratory of Coastal and Wetland Ecosystems, Ministry of Education, Xiamen University, Xiamen 361005, China.
Bang-qin
BQ
Huang
Key Laboratory of Coastal and Wetland Ecosystems, Ministry of Education, Xiamen University, Xiamen 361005, China.
Feng-Jiao
FJ
Liu
D000327:Adsorption; D001682:Biological Availability; D017377:Diatoms / Q000378:metabolism*; D004141:Dinoflagellida / Q000378:metabolism*; D004784:Environmental Monitoring; D006812:Humic Substances; D009532:Nickel / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000378:metabolism*
D006812:Humic Substances; D014874:Water Pollutants, Chemical; D009532:Nickel; D009584:Nitrogen
Absorption; Adsorption; Bioavaliability; Humic substances; Ni; Urea