| 摘要 |
A method of detecting substitution labile transition metal ions and removing them from an aqueous solution comprises adding an effective amount of an ionizable 2- pyridinethiol-1-oxide salt. The presence of said salt anion is compatible with the presence of or subsequent addition of chelating or sequestering agents having a higher equilibrium content for the ion to be complexed than the salt anion whereby the presence of the ion is confirmed by a color change and the formation of a precipitate. The precipitated metal-pyridinethiol complex can be removed from solution by conventional unit operations. |
