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  Indian J Med Microbiol
 

Figure 4: The gas chromatogram of 1-(3-trifluoromethylphenyl)piperazine and 1-(3-chlorophenyl)piperazine in urine by liquid-liquid extraction–gas chromatography/nitrogen–phosphorus detector

Figure 4: The gas chromatogram of 1-(3-trifluoromethylphenyl)piperazine and 1-(3-chlorophenyl)piperazine in urine by liquid-liquid extraction–gas chromatography/nitrogen–phosphorus detector