Three-phase hollow fiber liquid-phase microextraction based on two immiscible organic solvents for determination of tramadol in urine and plasma samples

2011 ◽  
Vol 56 (5) ◽  
pp. 1041-1045 ◽  
Author(s):  
Mahnaz Ghambarian ◽  
Yadollah Yamini ◽  
Ali Esrafili
2008 ◽  
Vol 31 (4) ◽  
pp. 622-628 ◽  
Author(s):  
Meihua Liu ◽  
Bin Qiu ◽  
Xia Jin ◽  
Lan Zhang ◽  
Xi Chen ◽  
...  

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