稀土学报(英文版)
稀土學報(英文版)
희토학보(영문판)
JOURNAL OF RARE EARTHS
2002年
3期
238-240
,共3页
卢兴%王悦%张海元%王进平%牛春吉%倪嘉缵
盧興%王悅%張海元%王進平%牛春吉%倪嘉纘
로흥%왕열%장해원%왕진평%우춘길%예가찬
rare earths%computer simulation%speciation%human plasma%calcium%terbium
Effect of Tb3+ on Ca2+ speciation in human plasma was studied by means of the computer program of MINTEQA2. When Tb3+ ions are not added into the system, Ca2+ ions mostly distribute in free Ca2+ (74.7%) and the surplus distributes in Ca2+ complexes, such as [CaHCO3]+(7.9%), [Ca(Lac)]+(6.4%), CaHPO4 (1.3%), [CaHistidinateThreoninateH3]3+(2.4%), [CaCitrateHistidinateH2] (2.3%) and CaCO3(1.1%). Tb3+ can compete with Ca2+ for inorganic as well as biological ligands. An increase of concentration of Tb3+ in the system results in an increase of content of free Ca2+ and a decrease of contents of Ca2+ complexes.
