Extraction of soil organic phosphorus

Organic matter and pH affect the analysis efficiency of 31 P-NMR

“…In this study, the mean concentration of mono-P was 50.42 mg/kg, making it the major Po in sediment. Diesters-P is a mixture of numerous compounds with varying lability (Turner et al, 2005). In this study, DNA-P and lipids-P were detected in the surface sediment.…”

“…The concentrations of DNA-P and PL-P were 8.93 and 4.54 mg/kg, respectively. The phon-P, which was only detected in some surface sediment, is considered a chemically stable compound because of the direct C-P bond (Turner et al, 2005); the concentration of phon-P was 2.90 mg/kg.…”

“…Although Po is an important component in the sediment, due to the complexity of Po constituents and analytical limitations, the composition and transformation of Po remain poorly understood (Cade-Menun, 2005;Turner et al, 2005). Several analytical methods have been developed to analyze Po compounds, such as P fractionation (Hieltjes and Lijklema, 1980;Pierzynski, 2004).…”

Phosphorus speciation of sediments from lakes of different tropic status in Eastern China

“…P can be divided into exchangeable P, the fractions associated with aluminum (Al), iron (Fe), and manganese (Mn) oxides and hydroxides, and calcium (Ca)-bound compounds, usually referred to as apatite-P. Depending on the bonding, biogenic-P can be divided into phosphonate, pyrophosphate, orthophosphate monoesters, DNA-P, and phospholipids (Ruban et al 2001a;Turner et al 2005). Although several analytical methods have been developed to allow examination of these P fractions, the lack of uniformity between the analytical procedures means that the results from different studies cannot be compared.…”

“…31 Pnuclear magnetic resonance ( 31 P-NMR) spectroscopy is a nondestructive, non-invasive technique for identifying chemical forms of P that can provide a complete analysis of the Po component. It is, therefore, an ideal analytical technique for examining Po species in marine or freshwater sediment (Cade-Menun and Liu 2013;Turner et al 2005). Several Po compounds, such as phosphonates, orthophosphate monoesters, and orthophosphate diesters, have been detected by 31 P-NMR (Turner et al 2005).…”