TY - JOUR A1 - Vogel, Christian A1 - Adam, Christian A1 - McNaughton, D. T1 - Determination of phosphate phases in sewage sludge ash-based fertilizers by Raman microspectroscopy T2 - Applied spectroscopy N2 - 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 µm² 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. PB - Society for Applied Spectroscopy CY - Frederick, Md. KW - Fertilizer KW - Sewage sludge ash KW - Phosphate KW - Raman microspectroscopy PY - 2013 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/28999 AN - OPUS4-28999 SN - 0003-7028 SN - 1943-3530 VL - 67 IS - 9 SP - 1101 EP - 1105 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany