用原子吸收光谱法测定催化剂中的铂  

Determination of platinum in catalyst by atomic absorption spectrometry

作　　者：单玲[1] 李俊花[1] 刘树文[1] 杨文华[1] 

机构地区：[1]石油大学化学化工学院,山东东营257061

出　　处：《石油大学学报（自然科学版）》2004年第6期120-122,共3页Journal of the University of Petroleum,China(Edition of Natural Science)

摘　　要：建立了利用石墨炉原子吸收光谱法测定催化剂中铂含量的方法。在标准溶液和试样溶液中加入铜离子,可以消除其他离子的干扰,并且提高测定铂的灵敏度。实验表明,高浓度的铝对测定结果有影响,而酸度的影响很小。在一定的浓度下,Fe3+,Ni2+等7种干扰离子对测定结果的影响很小。该方法的检出限为0.044mg/L,加标回收率为99%～105%,相对标准偏差在0.73%左右。A method for determining the content of platinum by the graphite furnace atomic absorption spectrometry was proposed. Cu^(2+) added into standard solution and sample solution can cancel the upset of the other ions and improve the determination sensitiveness. The experimental results show that aluminium of high concentration influences the determination results. Acidity and seven upset ions such as Fe^(3+) and Ni^(2+) almost have no influence on the determination. The detection limit of 0.044 mg/?L, the recovery ratio of 99%～105% and the relative standard deviation of 0.73% were obtained.

关 键 词：测定结果 影响 石墨炉原子吸收光谱法 含量 左右 实验 标准溶液 干扰离子 相对标准偏差 催化剂 

分 类 号：TE622.13[石油与天然气工程—油气加工工程] R446[医药卫生—诊断学]