23550
Our objective was to improve the assessment of these compounds in human blood using GC with flame ionization detection . Methods : An amount of 50 micro l of blood was diluted with 300 micro l of sterile water , 40 micro l of 10 % sodium tungstate , and 20 micro l of 1 % sulphuric acid .
 Chemical: sodium tungstate; Chemical: sulphuric 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: sodium tungstate; Chemical: sulphuric acid