Characterization, Dissolution, and Solubility of Zn-Substituted Hydroxylapatites [(ZnxCa1−x)5(PO4)3OH] at 25°C

<div>Change of the solubility product and the free energy of formation with the increasing <svg height="11.8174pt" id="M163" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -8.6359 21.3478 11.8174" width="21.3478pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M748 650H522L515 622L546 617C580 611 587 604 565 575C518 513 469 451 419 393C376 474 349 534 330 580C318 609 325 612 361 618L383 622L392 650H151L144 622C214 616 224 612 257 543L360 327C270 218 187 124 159 95C106 40 92 34 26 28L17 0H252L259 28L236 31C189 37 188 47 209 78C249 136 308 210 377 294L478 79C494 44 487 37 449 32L418 28L409 0H673L680 28C596 34 591 39 554 116L436 361C526 469 574 521 604 553C659 612 669 614 739 622L748 650Z" id="g113-89"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="765" vert-adv-y="765" xpluscharwidth="9.945"></glyph.data></g><g transform="matrix(.0091,0,0,-0.0091,9.88,3.132)"><path d="M566 179C549 130 530 96 510 76C481 47 444 40 324 40C256 40 195 42 160 46C300 249 436 439 576 636L568 650H166C135 650 125 652 113 675H86L74 488H108C119 533 131 558 144 577C160 601 179 610 283 610H454C313 407 172 215 31 16L40 0H564C575 40 593 135 601 172L566 179Z" id="g58-88"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="615" vert-adv-y="615" xpluscharwidth="15.47648155"></glyph.data></g><g transform="matrix(.0091,0,0,-0.0091,15.604,3.132)"><path d="M532 0V30C473 38 467 38 467 107V298C467 395 416 451 336 451C307 451 279 439 251 420C226 404 205 389 185 374V453C142 434 94 422 43 413V386C98 378 104 373 104 309V107C104 41 100 38 31 30V0H251V30C191 35 185 40 185 107V337C216 364 255 389 295 389C360 389 386 347 386 276V110C386 44 380 35 321 30V0H532Z" id="g58-108"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="557" vert-adv-y="557" xpluscharwidth="20.672683290000002"></glyph.data></g></svg> for the Zn-substituted hydroxylapatites [(ZnxCa1−x)5(PO4)3OH] at 25°C.</div>

Journal of Chemistry

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Figure 7

Figure 7: Characterization, Dissolution, and Solubility of Zn-Substituted Hydroxylapatites [(ZnxCa1−x)5(PO4)3OH] at 25°C