浊点萃取-火焰原子吸收光谱法测定乙醛触媒微量钯含量  

Determination of micro Pd(Ⅱ) in catalyst by cloud point extraction separation-flame atomic absorption spectrometry

作　　者：宋唯[1] 屈海峰[1] 陈寿华[1] 王绍东[1] 

机构地区：[1]中国石油吉林石化公司电石厂,吉林吉林132022

出　　处：《化工科技》2012年第4期48-51,共4页Science & Technology in Chemical Industry

摘　　要：建立了以1-(2-吡啶偶氮)-2-萘酚(PAN)为络合剂,以非离子表面活性剂Triton X-100为萃取剂的浊点萃取分离富集-火焰原子吸收光谱法测定痕量钯的新方法。研究了溶液的酸度、络合剂和表面活性剂浓度、平衡温度和时间、离子强度等条件对浊点萃取效果的影响。该方法对钯的检出限为35.3ng/mL,相对标准偏差(RSD)为3.1%(n=8),回收率97.6%～106.7%。可用于乙醛催化剂中微量Pd(Ⅱ)的测定。Deter mination of micro Pd （ Ⅱ ）in aldehyde catalyst was established by cloud point extraetion separation-flame atomic absorption spectrometry using 1-（2-pyridylazo）-2-naphthol （PAN） complexing agent（ Ⅰ ）, non-ionic surfactant Triton X -100 as extracting agent （Ⅲ）. The influences of acid-ity of solution,concentration of Ⅰ and Ⅲ, temperature and time of equilibrium,and ionic strength on the effect of cloud point extraction separation were investigated. The detection limit of new determina-ting method is 35.3 ng/mL,the RSD is 3. 1% （n=8）, the recovery is 97. 6%～106.7%. New methd can be used in aldehyde production.

关 键 词：浊点萃取 火焰原子吸收光谱法 TRITON X-100 钯 

分 类 号：O657.31[理学—分析化学]