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231222s1999 xx ||||| 00| ||eng c |
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|a pubmed25n0382.xml
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|a (DE-627)NLM114413886
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|a (NLM)11543409
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Golden, D C
|e verfasserin
|4 aut
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|a Nutrient-substituted hydroxyapatites
|b synthesis and characterization
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|c 1999
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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| 500 |
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|a Date Completed 28.10.2000
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|a Date Revised 27.10.2019
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|a published: Print
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|a Citation Status MEDLINE
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|a Incorporation of Mg, S, and plant-essential micronutrients into the structure of synthetic hydroxyapatite (HA) may be advantageous for closed-loop systems, such as will be required on Lunar and Martian outposts, because these apatites can be used as slow-release fertilizers. Our objective was to synthesize HA with Ca, P, Mg, S, Fe, Cu, Mn, Zn, Mo, B, and Cl incorporated into the structure, i.e., nutrient-substituted apatites. Hydroxyapatite, carbonate hydroxyapatite (CHA), nutrient-substituted hydroxyapatite (NHA), and nutrient-substituted carbonate hydroxyapatite (NCHA) were synthesized by precipitating from solution. Chemical and mineralogical analysis of precipitated samples indicated a considerable fraction of the added cations were incorporated into HA, without mineral impurities. Particle size of the HA was in the 1 to 40 nm range, and decreased with increased substitution of nutrient elements. The particle shape of HA was elongated in the c-direction in unsubstituted HA and NHA but more spherical in CHA and NCHA. The substitution of cations and anions in the HA structure was confirmed by the decrease of the d[002] spacing of HA with substitution of ions with an ionic radius less than that of Ca or P. The DTPA-extractable Cu ranged from 8 to 8429 mg kg-1, Zn ranged from 57 to 1279 mg kg-1, Fe from 211 to 2573 mg kg-1, and Mn from 190 to 1719 mg kg-1, depending on the substitution level of each element in HA. Nutrient-substituted HA has the potential to be used as a slow-release fertilizer to supply micronutrients, S, and Mg in addition to Ca and P
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|a Journal Article
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|a NASA Center JSC
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|a NASA Discipline Life Support Systems
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|a Carbonates
|2 NLM
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|a Fertilizers
|2 NLM
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| 650 |
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|a Hydroxyapatites
|2 NLM
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| 650 |
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|a Micronutrients
|2 NLM
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|a Minerals
|2 NLM
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|a Soil
|2 NLM
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|a Solutions
|2 NLM
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|a Citric Acid
|2 NLM
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|a 2968PHW8QP
|2 NLM
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| 700 |
1 |
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|a Ming, D W
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ming, D W
|e investigator
|4 oth
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| 773 |
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|i Enthalten in
|t Soil Science Society of America journal. Soil Science Society of America
|d 1990
|g 63(1999), 3 vom: 15. Mai, Seite 657-64
|w (DE-627)NLM098183710
|x 0361-5995
|7 nnns
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| 773 |
1 |
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|g volume:63
|g year:1999
|g number:3
|g day:15
|g month:05
|g pages:657-64
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|a AR
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|d 63
|j 1999
|e 3
|b 15
|c 05
|h 657-64
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