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The concentration of AFM1 in all the samples was lower than the Iranian national standard and Food and Drug Administration limit ( 500 ng / L ) , and only in one ( 1 . 6 % ) of the samples , the concentration of AFM1 was greater than the maximum tolerance limit ( 50 ng / L ) accepted by European Union and Codex Alimentarius Commission .
 Chemical: AFM1; Chemical: AFM1
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: AFM1; Chemical: AFM1