17465
The precision ( RSD ) was found to be 5 . 7 % and 3 . 1 % at concentration levels 0 . 1 and 5 . 0 mu g mL ( - 1 ) iron ( II ) , respectively .
 Chemical: iron ( II )
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: iron ( II )