【摘要】 试样在镍盐存在下于 5 30℃灰化 ,残查用硝酸溶解后用石墨炉原子吸收法测定微量铅、砷。试样加铅、砷标准的回收率分别为 92 %～ 112 % ;86 %～ 119%。相对标准偏差为 11%～ 15 %。更多还原

【Abstract】 A graphite furnace atomic absorption spectrometric method has been established to determine trace lead and arsenic in copper aspirinate,a new anti inflammatory and anti thrombotic agent.The sample is pretreated by ashing at 530 ℃ in the presence of Ni(NO 3) 2,followed by dissolution with HNO 3.The method is simple and has a low detection limit.The relative standard deviation is 11%-15%,the recovery is 92%-112% for lead and 86%-119% for arsenic.更多还原