Identification of Soil-fertilizer Reaction Products in a Calcareous Saskatchewan Soil by Infra-red Absorption Analysis

Beatón, J. D.; Charlton, T. L.; Speer, R. C.

doi:10.1038/1971329a0

Cited by 18 publications

(9 citation statements)

References 4 publications

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“…These occur at wavelengths of 3.03 pm, 6.06 pm, 6.54 pm, and 8.06 pm [ 17,181. The mineral, hydroxyapatite, absorbs most strongly in the infrared spectrum at wavelengths of 2.94 pm and 9.26 pm [19]. In addition, calcium phosphate has strong infrared absorption bands at wavelengths of 3.1 pm, 3.3 pm, 9.2 pm, and 9.7 pm [20].…”

Section: Discussionmentioning

confidence: 99%

Infrared laser bone ablation

et al. 1988

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The bone ablation characteristics of five infrared lasers, including three pulsed lasers (Nd:YAG, lambda = 1,064 micron; Hol:YSGG, lambda = 2.10 micron; and Erb:YAG, lambda = 2.94 micron) and two continuous-wave lasers (Nd:YAG, lambda = 1.064 micron; and CO2, lambda = 10.6 micron), were studied. All laser ablations were performed in vitro, using moist, freshly dissected calvarium of guinea pig skulls. Quantitative etch rates of the three pulsed lasers were calculated. Light microscopy of histologic sections of ablated bone revealed a zone of tissue damage of 10 to 15 micron adjacent to the lesion edge in the case of the pulsed Nd:YAG and the Erb:YAG lasers, from 20 to 90 micron zone of tissue damage for bone ablated by the Hol:YSGG laser, and 60 to 135 micron zone of tissue damage in the case of the two continuous-wave lasers. Possible mechanisms of bone ablation and tissue damage are discussed.

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Section: Discussionmentioning

confidence: 99%

Infrared laser bone ablation

et al. 1988

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“…The solubility of phosphorus in the Balmoral and Red River soils, calculated using pH, ½pMg and pH2P04, was near or above that of dimagnesium phosphate trihydrate indicating that dimagnesium phosphate trihydrate was the most soluble phosphate compound formed. B e a t o n et al 2 reported that the reaction products of monoammonium and diammonium phosphate in a calcareous soil were dicalcium phosphate dihydrate and hydroxyapatite, respectively. The solubility of the phosphorus in the soils studied were very similar regardless of the form of phosphate added.…”

Section: Ph-wöùco O~ Ph-~2pmgmentioning

confidence: 99%

Solubility of phosphorus added to four Manitoba soils with different calcium and magnesium contents

Racz

Soper

1970

Plant Soil

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SUMMARYThe solubili±y 0f phosphorus was found to approximate that of dicalcium phosphate dihydrate and/of dimagnesium phosphate trihydrate when KH~-PO4, HsP04 and K~HP04were added to four Manitoba soils. Eighty to one hundred, seventy to ninety and sixty to eighty per cent of the phosphorus added remained in solution when H3P04, I(H2P04 and K2HP04 were added, respectively. The solubility of the added phosphorus was high in all samples and relatively soluble compounds, dicalcium phosphate dihydrate and dimagnesium phosphate trihydrate, were most likely formed in the samples indieating that phosphorus added to these soils would be readily available to plants.

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“…8 All these methods have distinct advantages and disadvantages. The first infrared study in this area by Beaton et al 9 used a dispersive infrared spectrometer to identify fertilizer-soil reactions of water-soluble P fertilizers. X-ray absorption near edge structure spectroscopy has a significant advantage in that it is unaffected by the host matrix (i.e., soil or other fertilizer components), but if there is more than one compound of an element in a sample, it is difficult to determine the chemical state.…”

Section: Introductionmentioning

confidence: 99%

Determination of Phosphorus Fertilizer Soil Reactions by Raman and Synchrotron Infrared Microspectroscopy

et al. 2013

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The reaction mechanisms of phosphate-bearing mineral phases from sewage sludge ash-based fertilizers in soil were determined by Raman and synchrotron infrared microspectroscopy. Different reaction mechanisms in wet soil were found for calcium and magnesium (pyro-) phosphates. Calcium orthophosphates were converted over time to hydroxyapatite. Conversely, different magnesium phosphates were transformed to trimagnesium phosphate. Since the magnesium phosphates are unable to form an apatite structure, the plant-available phosphorus remains in the soil, leading to better growth results observed in agricultural pot experiments. The pyrophosphates also reacted very differently. Calcium pyrophosphate is unreactive in soil. In contrast, magnesium pyrophosphate quickly formed plant-available dimagnesium phosphate.

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Identification of Soil-fertilizer Reaction Products in a Calcareous Saskatchewan Soil by Infra-red Absorption Analysis

Cited by 18 publications

References 4 publications

Infrared laser bone ablation

Infrared laser bone ablation

Solubility of phosphorus added to four Manitoba soils with different calcium and magnesium contents

Determination of Phosphorus Fertilizer Soil Reactions by Raman and Synchrotron Infrared Microspectroscopy

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