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 JWARP  Vol.11 No.1 , January 2019
Analytical Errors in the Determination of Inorganic and Organic Phosphorus in Waters Based on Laboratory Experiences
Jinbo Zhao1,2, Mengyuan Liu2, Ming Chen2
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Abstract: Phosphorus has been closely associated with eutrophication, a growing ecological problem globally. Because bacterial and algae responds to organic and inorganic nutrients differently, developing an accurate analytical method for the determination of dissolved inorganic phosphorus (DIP) and dissolved organic phosphorus (DOP) is critical for understanding eutrophication. This paper describes analytical variations observed in laboratory experiments for the determination of DIP and DOP. Several experimental parameters including phosphorus reagents’ temperature, water sample matrix, pH, and autoclave methods are investigated. With the optimization of the autoclave procedure, the recoveries of 8 model organic phosphorus compounds (i.e. adenosine-5-triphosphate di-sodium salt (ATP), phytic acid (PTA), sodium tripolyphosphate (STP), methyltriphenylphosphonium bromide (MPT), p-nitrophenyl phosphate magnesium salt (p-NPP), β-D-glucose-6-phosphate monosodium salt (G-6-P) and cocarboxylase (COCA)) are all well above 90% indicating significant analytical method improvement.
Keywords: Inorganic Phosphorus, Organic Phosphorus, Analytical Method
Cite this paper: Zhao, J. , Liu, M. and Chen, M. (2019) Analytical Errors in the Determination of Inorganic and Organic Phosphorus in Waters Based on Laboratory Experiences. Journal of Water Resource and Protection, 11, 53-67. doi: 10.4236/jwarp.2019.111004.
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