DETERMINATION OF NO_3~-, NO_2~- AND Cl~- IN TOBACCO BY ION CHROMATOGRAPHY
Wu Yuping, Wang Dongdan, Yang Jinhui ( Key Laboratory of Biological Technology of Yunnan Tobacco Institute, Kunming 650106)
The method for determination of NO3- , NO2- and Cl- in tobacco by ion chromatography is described. Separation was performed on DX - 500 by using 3.5 mmol/L Na2CO3 -1.0 mmol/L NaHCO3 as eluant. Good linearity was achieved. The detection limits were 0.200 μg/mL for NO3-, 0. 125 μg/mL for NO2- and 0.064 μg/mL for Cl- .
【CateGory Index】： O657.7