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A C18 analytical column and mobile phase composed of acetonitrile and 0 . 02 % aqueous phosphoric acid were used for the chromatographic separation with DAD detection .
 Chemical: acetonitrile; Chemical: phosphoric acid
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: acetonitrile; Chemical: phosphoric acid