天然矿泉水中镉含量是极微量的 ,国家标准中的限量值为 0 .0 10ｍｇ/Ｌ[1] 。国标推荐的火焰原子吸收法[2 ] 常难检出 ,而石墨炉原子吸收法重现性差。现通过实验探索将微分电位溶出法 (简称ＤＰＳＡ法 )用于天然矿泉水中镉的测定 ,并与火焰原子吸收法进行比较 ,发现该法简便、 Natural mineral water is a trace amount of cadmium, the national standard limit value of 0 10mg / L [1]. GB flame atomic absorption method recommended [2] often difficult to detect, and graphite furnace atomic absorption method reproducibility is poor. Now through the experiment to explore the differential potential stripping method (referred to as DPSA method) for the determination of cadmium in natural mineral water, and compared with flame atomic absorption method found that the method is simple,