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. 2022 Jun 23;7(27):23061–23068. doi: 10.1021/acsomega.2c00089

Table 3. Nicotine Analysis Using Different Physical Extraction Methodsa.

shaking*
 ultrasonic oscillation
 static extraction
time (min) free nicotine time (min) free nicotine time (h) free nicotine
30 2.28 20 2.25 22 5.75
60 2.77 40 2.70 24 5.70
90 3.05 60 2.98 26 5.86
120 3.20 80 3.26    
150 3.46 100 3.41    
180 3.63 120 3.60    
a

Note: Data given in units of mg/g. * Rotation speed ∼150 rpm.