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- W2094996939 abstract "The results from a study of the parameters for the rapid and efficient extraction of 14C-morphine from normal urine using the XAD-2 resin are described. By the use of controlled flow rates, adjusted urinary pH, and an efficient elution solvent, the XAD-2 resin can extract greater than 90% of the morphine added to normal urine. This extraction efficiency, coupled with current thin layer chromatographic techniques, gives a sensitivity of 0.06μg/ml for detection of morphine in normal urine. These results are comparable to or better than those obtained by liquid-liquid extraction techniques. In addition, the studies show that morphine extracted from urine by XAD-2 resin can be stored on the resin for 14 days without degradation. These studies with nonaddict urine were carried out to determine the optimal parameters for efficient and consistent extraction of urinary morphine using XAD-2 resin. Present studies, using the above parameters, are being carried out on addict urine." @default.
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- W2094996939 date "1973-02-01" @default.
- W2094996939 modified "2023-10-18" @default.
- W2094996939 title "Studies on the quantitative extraction of morphine from urine using nonionic XAD-2 resin" @default.
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- W2094996939 doi "https://doi.org/10.1016/0006-2944(73)90110-5" @default.
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