7007
Following the determination of the analytical stripping conditions of 0 . 45 V amplitude , 30 Hz frequency , - 1 . 4 V initial potential , and 4 . 0 mV increment potential , only a 60 - s experimental accumulation time was used .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None