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- W2044295590 abstract "A sensitive chemiluminescence (CL) method, based on the enhancive effect of cobalt(II) on the CL reaction between luminol and dissolved oxygen in a flow injection (FI) system, was proposed for determination of Vitamin B12. The increment of the CL intensity was proportional to the concentration of Vitamin B12, giving a calibration graph linear over the concentration from 2.0×10−10 to 1.2×10−6 g l−1 (r2=0.9992) with the detection limit of 5.0×10−11 g l−1 (3σ). At a flow rate of 2.0 ml min−1, a complete determination of Vitamin B12, including sampling and washing, could be accomplished in 0.5 min with the relative standard deviations (R.S.D.) of less than 5.0%. The proposed method was applied successfully to the determination of Vitamin B12 in pharmaceuticals, human serum, egg yolk and fish tissue." @default.
- W2044295590 created "2016-06-24" @default.
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- W2044295590 date "2003-07-01" @default.
- W2044295590 modified "2023-10-03" @default.
- W2044295590 title "Sub-picogram determination of Vitamin B12 in pharmaceuticals and human serum using flow injection with chemiluminescence detection" @default.
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- W2044295590 doi "https://doi.org/10.1016/s0003-2670(03)00665-2" @default.
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