Exploration of inspection method for cracking products of macroporous adsorption resin in mailuotong particles
Objective To develop a method for detecting the cracking products(n-hexane,benzene,toluene)of macroporous adsorption resin in Mailuotong particles and to specify their limits.Methods Gas chromatography was used for headspace injection,with DB-1(column length 30m,inner diameter 0.32mm,membrane thickness 0.5μm)elastic quartz capillary column,FID detector,and high-purity nitrogen gas as the carrier gas.Results The linear relationship of n-hexane was good within the range of 0.5018-6.022μg/ml(r=0.99949),with an average recovery rate of 97.43%and RSD=2.8%(n=6);the linear relationship of benzene was good within the range of 0.05882-0.7059μg/ml(r=0.99966),with an average recovery rate of 96.60%and RSD=2.4%(n=6);the linear relationship of toluene is good within the range of 0.4959-5.951μg/ml(r=0.99926),with an average recovery rate of 93.87%and RSD=2.1%(n=6).Conclusion This method is simple,reliable,and has good reproducibility,and can be used for residual detection of n-hexane,benzene,and toluene in Mailuotong granules.
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