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| Determination of Lead in Sorbitol by Graphite Furnace AAS |
| ZHANG Cai-xia1，ZHOU Ai-bin2，KANG Jian2, XU Jian-mei1, LI Hui-jing1 |
| 1.Hebei Welcome Pharmaceutical Corporation Ltd.，Shijiazhuang 050031,China； 2.Shijiazhuang Yiling Pharmaceutical Corporation Ltd.，Shijiazhuang 050031,China |
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Abstract A method for determinaion of lead in sorbitol by GF-AAS was established. Using the rising-temperature program of graphite furnace with D2 background correction，the lead content in sorbitol was determined by GF-AAS. The results showed that the regression equation for the lead determination was C =-0.691 7+99.2631×A ( r = 0.9950 ); the average recovery was 90.5%, RSD was 2.9%. The method had the lower limit of detection and more accurate for determining the concentration，and it also provided the basis for quality control of the raw of vitamin C .
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