The derivative spectrum of saccharin sodium, benzoic acid and sorbic acid were seriously overlapping, so they can not be determined individually by spectrophotometry without prior separation.
糖精钠、苯甲酸和山梨酸的导数光谱彼此严重重叠，未经分离无法作单一成分分析。
The derivative spectrum of saccharin sodium, benzoic acid and sorbic acid were seriously overlapping, so they can not be determined individually by spectrophotometry without prior separation.
糖精钠、苯甲酸和山梨酸的导数光谱彼此严重重叠，未经分离无法作单一成分分析。
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