Determination of phosphate phases in sewage sludge ash-based fertilizers by Raman microspectroscopy.
The chemical form of phosphate phases in sewage sludge ash (SSA)-based fertilizers was determined by Raman microspectroscopy. Raman mapping with a lateral resolution of 5 × 5 μm(2) easily detected different compounds present in the fertilizers with the help of recorded reference spectra of pure substances. Quartz and aluminosilicates showed Raman bands in the range of 450-520 cm(-1). Phosphates with apatite structure and magnesium triphosphate were determined at around 960 and 980 cm(-1), respectively. Furthermore, calcium/magnesium pyrophosphates were detected in some samples.
Monash University, School of Chemistry, Wellington Road, 3800 VIC Clayton, Australia.
Christian
C
Vogel
Christian
C
Adam
Don
D
McNaughton
D002131:Calcium Pyrophosphate / Q000737:chemistry; D011756:Diphosphates / Q000737:chemistry; D005308:Fertilizers / Q000032:analysis*; D017616:Magnesium Compounds / Q000737:chemistry; D010710:Phosphates / Q000032:analysis* / Q000737:chemistry; D012722:Sewage / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods*
D011756:Diphosphates; D005308:Fertilizers; D017616:Magnesium Compounds; D010710:Phosphates; D012722:Sewage; C034732:magnesium pyrophosphate; D002131:Calcium Pyrophosphate