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Research on the headspace gas chromatography for the determination of residual solvent in Levamisole Hydrochloride

Qinghua TANG Ying WEI(Guangxi Guilin pharmaceutical Co.,Ltd.Guilin 541002)  
To develop solution-solid headspace capillary GC for the determination d residual solvent in Levamisole Hydrochloride.Using HSS-4A and DB-1 wide bore capillary column wish 1-butanol as internal standard.The average recovery of methanol,ethanol,chloroform and DMSO was100.5 %, 102.7 %,101.8 %,93.3 %,reapectively.The lowest test limits of methanol,ethanol,chloroform and DMSO was 0.2μg·g-1,0.1μg·g-1,1.5μg·g-1, 16.2μg·g-1,respectively.The method is simple,accurate,sensitive and reproducibility.
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