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Questions related from Ma. Flynne Dagalea
I'm confused on what values to use from the table below, can you help me compute for the Ca/P?
07 June 2023 6,702 4 View
I want to index my mussel shells against aragonite, do you think you can share with me a JCPDS of aragonite ? I need it for my research. Thank you Kindly, Flynne Dagalea
06 June 2023 8,594 0 View
The spectra below is a chemically synthesized hydroxyapatite at 80 degree Celsius for 24 hours. Could you suggest a bond corresponding to 2853-2958 from the spectra below? I expected a broad OH...
06 June 2023 453 3 View
I made hydroxyapatite from mussel shells and ammonium phosphate and calcinated it after. The diffractogram is given below and the crystallinity is calculated as follows CI value is given by: CI =...
01 June 2023 4,592 3 View
I tried to bind urea with my hydroxyapatite, but XRD does not confirm it (peaks for urea was not found in the urea-HAp ) nanohybrid. I tried to sonicate the HAP dispersion using a bath type,...
16 May 2023 6,841 3 View
How do I confirm that what I synthesized is hydroxyapatite and not other calcium phosphate compounds (eg. tricalcium phosphate)? Which characterization process should I use to confirm this? You...
13 May 2023 5,506 3 View
This is a hydroxyapatite sample that was calcinated at 900 degrees Celsius, can you help me describe its morphology based on your experience? I think my sample is very much aggregated in my SEM,...
13 April 2023 9,035 2 View
My goal is to counter-check my SEM photo against my XRD data, which the latter (XRD) confirms that I had an almost spherical particle in nanosize scale. I think my sample is still aggregated in...
04 March 2023 5,144 7 View
The data below were generated from XRD hydroxyapatite, but I'm confused about what should I use to first graph my diffractogram and most importantly the crystallinity of my sample. Could tell me...
04 February 2023 7,456 4 View
Good eve. I am afraid of overshooting the pH of hydroxyapatite solution by combining, Ca(OH)2 suspension and phosphoric acid. Can you suggest an acid solution to adjust the pH=10? Recently I...
20 January 2023 2,162 1 View
Hi I am looking for a simple standardization procedure in standardizing 0.25M Phosphoric acid, perhaps with NaOH, please if you know a procedure. do tell. Thank you!
13 January 2023 3,804 2 View
Which has the capability to determine the molar ratio of Ca/P of hydroxyapatite ; XRD or SEM-EDS?
13 December 2022 6,122 7 View
Greetings, Calcium nitrate tetrahydrate and di ammonium hydrogen phosphate were used as precursors for Calcium and Phosphate elements respectively. Corresponding molar solution of calcium nitrate...
01 November 2022 9,413 0 View
I will be working on a slow-release fertilizer for my undergraduate thesis, but I am confused about how other authors measure cumulative nitrogen release for a time interval (including the...
15 October 2022 7,596 1 View
