3583
Matrix solid phase microextraction ( matrix - SPME ) was evaluated as a surrogate for the absorbed dose in organisms to estimate bioavailability and toxicity of permethrin and dichlorodiphenyltrichloroethane ( DDT ) in laboratory - spiked sediment .
 Chemical: permethrin; Chemical: dichlorodiphenyltrichloroethane; Chemical: DDT
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: permethrin; Chemical: dichlorodiphenyltrichloroethane; Chemical: DDT