直接进样石墨炉原子吸收测定黄酒中的铅

Determination of Pb Content in Yellow Rice Wine BY GFAAS(Direct Sampling)

研究了稀释后直接上样,石墨炉原子吸收分光光度计测定黄酒中的铅的含量的方法;对比了湿法以及干法消解处理后经石墨炉原子吸收分光光度计测定结果的影响。结果表明,稀释后直接上样方法不仅可达到相应的检测要求,而且处理方便、简单,更容易操作;回收率均在80%～103%;对含盐量较高的酒,添加磷酸二氢铵作基体改进剂,可消除盐分的影响。

Pb content in yellow rice wine was determined by GFAAS （diluted and direct sampling）, Compared with other two GFAAS methods （wet digestion method and dry digestion method）, GFAAS （diluted and direct sampling） not only met the corresponding determination requirements but also was more convenient to operate. Its recovery ranged from 80 %-103 %, As for wine of higher salt content, ammonium dihydric phosphate （NH4H2PO4） was used as background modifier to eliminate the interference of NaCl.