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- W1977946265 abstract "Abstract A critical study of the solution conditions and other parameters affecting the reliability of the ammonium pyrrolidinedithiocarbamate-methyl isobutyl ketone (APDC-MIBK) extraction system for Ag, Cd, Co, Cr, Cu, Fe, Mn, Ni, and Pb was made. The following parameters were investigated in detail: pH of the aqueous phase prior to extraction, amount of APDC added to the solution following pH adjustment, the length of time needed for complete extraction and the time-stability of the chelate in the organic phase. Except for Ag and Cr which were quantitatively extracted only in a very narrow pH range (1.0-2.0 and 1.8-3.0, respectively), and Cd and Pb which were stable in the extracted MIBK phase only for 2-3 hrs, the solution conditions for quantitative extraction were not critical for the other metals. Simultaneous extraction of all the metals except Cd and Pb was also investigated, Good recoveries (100±10%) were obtained for a number of spiked raw, treated and distributed drinking water samples covering a wide range of hardness. It is concluded that the APDC-MIBK-GFAA procedure is reliable and precise under proper solution conditions. The method is now routinely used in our laboratory for the determination of a number of the above metals in various Canadian drinking water supplies." @default.
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- W1977946265 date "1979-09-01" @default.
- W1977946265 modified "2023-09-27" @default.
- W1977946265 title "Ammonium Pyrrolidinedithio-carbamate-Methyl Isobutyl ketone-Graphite Furnace Atomic Absorption System for Some Trace Metas in Drinking Water" @default.
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- W1977946265 doi "https://doi.org/10.1080/03067317908071476" @default.
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