Guardado Iñaki, Urrutia Oscar, Garcia-Mina Jose M
Department of Chemistry and Soil Chemistry, University of Navarra, 31080 Pamplona, Spain.
J Agric Food Chem. 2005 Nov 2;53(22):8673-8. doi: 10.1021/jf052031p.
The aim of this work is to study the suitability of the complementary use of ultrafiltration (UF) and the interaction with an anion-exchange resin (AR) to characterize of phosphate-metal-humic complexes in solution. The results indicate that a methodological approach consisting of the validation and calibration of the AR method by the UF method and the further use of the AR method is suitable for characterizing phosphate-metal complexes. Such an approach has proven to be useful for calculating the phosphate maximum binding capacity of iron-humic complexes and stability constants. It might also be used to obtain valuable purified phosphate-metal-humic complexes for further structural characterization.
这项工作的目的是研究超滤（UF）互补使用的适用性以及与阴离子交换树脂（AR）的相互作用，以表征溶液中的磷酸盐 - 金属 - 腐殖质络合物。结果表明，一种由通过超滤法对阴离子交换树脂法进行验证和校准以及进一步使用阴离子交换树脂法组成的方法适用于表征磷酸盐 - 金属络合物。这种方法已被证明对于计算铁 - 腐殖质络合物的磷酸盐最大结合容量和稳定性常数很有用。它还可用于获得有价值的纯化磷酸盐 - 金属 - 腐殖质络合物，以进行进一步的结构表征。
