Preprints
https://doi.org/10.5194/bgd-10-16269-2013
https://doi.org/10.5194/bgd-10-16269-2013
22 Oct 2013
 | 22 Oct 2013
Status: this preprint has been withdrawn by the authors.

Characteristics and assessment of biogenic phosphorus in sediments from the multi-polluted Haihe River, China, using phosphorus fractionation and phosphorus-31 nuclear magnetic resonance (31P-NMR)

W. Q. Zhang, H. Zhang, W. Z. Tang, and B. Q. Shan

Abstract. We studied the phosphorus (P) pollution, as described by concentrations, distribution and transformation potential, of sediments of the water scarce and heavily polluted Fuyang River, a tributary of the Haihe River, using P fractionation and phosphorus-31 nuclear magnetic resonance (31P-NMR).The sediments of the Fuyang River accumulate significant amounts of inorganic phosphorus (Pi) and organic phosphorus (Po) from industrial and domestic wastewater and agricultural non-point pollution. In terms of their contribution to total phosphorus, the rank order of the P fractions was as follows: H2SO4-P > NaOH-Pi > Res-P > NaOH-Po > KCl-P and their average relative proportions were 69.7:47.5:15.9:2.9:1.0 (the proportion was based on the average proportion of the KCl-P). Seven P compounds were detected by the 31P-NMR analysis. Orthophosphate (Ortho-P: 45.2–92.4%) and orthophosphate monoesters (mono-P: 6.6–45.7%) were the dominant forms. Smaller amounts of pyrophosphates (pyro-P: 0.1–6.6%), deoxyribonucleic acid (DNA-P: 0.3–3.9%), phosphonates (phon-P: 0–3.3%), phospholipids (lipids-P: 0–2.7%) and polyphosphate (poly-P: 0–0.04%) were observed in the sediments. Results of P fractionation and 31P-NMR analysis showed that 35% of Pi was labile P, including KCl-P and NaOH-Pi (Fe-P and Al-P). Biogenic-P accounted for 24% of P in the sediments. Analysis of the relationships between P species and water quality indicated that the Po compounds would mineralize to form ortho-P and would be potentially bioavailable for recycling to surface water, supporting further growth of phytoplankton and leading to algal blooms.

This preprint has been withdrawn.

W. Q. Zhang, H. Zhang, W. Z. Tang, and B. Q. Shan

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
W. Q. Zhang, H. Zhang, W. Z. Tang, and B. Q. Shan
W. Q. Zhang, H. Zhang, W. Z. Tang, and B. Q. Shan

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