Chromium (VI) in phosphorus fertilizers determined with the diffusive gradients in thin-films (DGT) technique.

ABSTRACT: Phosphorus (P) fertilizers from secondary resources became increasingly important in the last years. However, these novel P-fertilizers can also contain toxic pollutants such as chromium in its hexavalent state (Cr(VI)). This hazardous form of chromium is therefore regulated with low limit values for agricultural products even though the correct determination of Cr(VI) in these fertilizers may be hampered by redox processes, leading to false results. Thus, we applied the novel diffusive gradients in thin-films (DGT) technique for Cr(VI) in fertilizers and compared the results with the standard wet chemical extraction method (German norm DIN EN 15192) and Cr K-edge X-ray absorption near-edge structure (XANES) spectroscopy. We determined an overall good correlation between the wet chemical e

SUBMITTER: Vogel C 

PROVIDER: S-EPMC7326810 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature