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- W2351977510 abstract "AIM:To develop a new luminescence semiconductor nanocrystal for the determination of trace amount of copper in Chinese herbal medicine.METHODS:A core-shell quantum dots (CdSe/ZnS QDs ) was used as a luminescent substance.Its surface was modified with bovine serum albumin (BSA) and used as the probe for the determination of copper ion.This method was based on the phenomenon that Cu~(2+) can cause fluorescence quenching of CdSe/ZnS quantum dots modified by BSA at a buffer solution of pH 7.4.RESULTS:There was a linear relationship in the range of 6.0×10~(-4)～6.0×10~(-3) μg/mL for Cu~(2+) with the correlation coefficient of 0.998 9.The determination limit was 1.0×10~(-4) μg/mL and the recovery was 93.6%～108.0%.CONCLUSION:The method proved to be suitable for trace copper determination of the Chinese herbal medicine." @default.
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- W2351977510 date "2005-01-01" @default.
- W2351977510 modified "2023-09-25" @default.
- W2351977510 title "Determination of Trace Amount of Copper in the Chinese Herbal Medicine by Fluorescence Quenching of Quantum Dots" @default.
- W2351977510 hasPublicationYear "2005" @default.
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