title: Speciation changes of cadmium in mangrove (Kandelia candel (L.)) rhizosphere sediments.
abstract: The speciation distribution of cadmium (Cd) in mangrove (Kandelia candel (L.) Druce) rhizosphere sediment was investigated after different contents of Cd being loaded. The study results indicated that root induced changes of Cd bioavailability in the rhizosphere. Exchangeable and carbonate bound Cd in the rhizosphere sediments were lower than these in the bulk sediments, whilst an increase in Fe-Mn oxides bound and O.M/sulfide bound fractions occurred in the rhizosphere sediment. Increased levels of Cd in sediments resulted in higher Cd concentrations in mangrove plants, and the order of accumulation was: roots > hypocotyls > stems and leaves.
authors.affiliation: School of Life Sciences, Xiamen University, Xiamen, Fujian, PR China.
authors.forename: Liu
authors.initials: L
authors.lastname: Jingchun
authors.forename: Yan
authors.initials: Y
authors.lastname: Chongling
authors.forename: Zhang
authors.initials: Z
authors.lastname: Ruifeng
authors.forename: Lu
authors.initials: L
authors.lastname: Haoliang
authors.forename: Qin
authors.initials: Q
authors.lastname: Guangqiu
mesh_terms: D002104:Cadmium / Q000493:pharmacokinetics*; D019015:Geologic Sediments; D006863:Hydrogen-Ion Concentration; D018517:Plant Roots / Q000378:metabolism*; D043982:Rhizophoraceae / Q000378:metabolism*
chemical_list: D002104:Cadmium