自生的
磷灰石
生物地球化学
浸出(土壤学)
碳酸盐
环境化学
磷
磷酸盐
遗传算法
化学
矿物学
磷酸盐矿物
环境科学
地质学
土壤科学
土壤水分
有机化学
生态学
生物
作者
Pierre Anschutz,Jonathan Deborde
摘要
Abstract The speciation of Phosphorus (P) in geologic materials can inform diverse investigations in such as aquatic biogeochemistry, soil sciences, and paleo‐oceanography. Here, we describe in detail a set of sequential extraction schemes to measure P concentrations from several operationally defined phases: pore water, exchangeable or loosely sorbed P, Fe‐bound P, P associated with biogenic apatite, P associated with authigenic apatite and carbonate forms, P associated with detrital apatite and inorganic forms, and organic P. The two benefits of the procedures we describe compared to prior methodological studies are: (1) fast, simple and inexpensive colorimetric methods have been developed for P determination in all the different matrices; and (2) the Fe‐bound phosphorus pool is separated into two fractions, allowing the P associated with most reactive Fe‐fraction to be distinguished from P bound to the remainder of the Fe‐oxides. Adaptations of these procedures to optimize the characterization of P pools in a range of material types are also outlined.
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