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But uses the ultraviolet spectrophotometer law, compares above two methods, the operation is simple, fast accurate, therefore this experiment uses this method to carry on the examination.Results in Vitamin C by the experiment the standard curve to be as follows, obtains equation of motion y=0.0550x+

Using UV spectrophotometer method, compared to either of the above methods, simple operation, fast and accurate, so this experiment using this method for testing. Experimental vitamin c by standard curve is as follows, y=0.0550x+0.0044 be linear regression equation, correlation coefficient as 0.9998

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