1. National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China 2. College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China
Abstract：Palladium in automotive exhaust catalyst was determined by flame atomic absorption spectrometry (FAAS). The analytical conditions and the coexisting elements interference were studied. The catalyst was dissolved by the mixture of H2O2 and HCl. Pd in the solution was directly determined by FAAS method. The linearity of working curve ranges from 0.1 to 15 μg·mL-1; the detection limit is 0.029 μg·mL-1; the relative standard deviation (RSD) range is from 0.8% to 2.5%; and the recovery rate range is from 99.6% to 101.2%. It is a simple and convenient method for accurate analysis of Pd in the exhaust catalysts.
[1] Heck R M, Farrauto R J. Applied Catalysis A，2001，221：443. [2] LI Zhen-ya，MA Yuan，HONG Ying，et al(李振亚，马 媛，洪 英，等). Precious Metals(贵金属)，2001，22(2)：28. [3] LI Tian-rui，LI Hua(李天瑞，李 华). Hunan Metallurgy(湖南冶金)，1996，(4)：55. [4] Beary E S, Paulsen P J. Analytical Chemistry，1995，67(18)：3193. [5] SI Yun-sen，HU Qiu-fen，ZHU Li-ya，et al(司云森，胡秋芬，朱利亚，等). Physical Testing and Chemical Analysis Part B: Chemical Analysis(理化检验-化学分册)，2005，41(3)：162. [6] GAO Xiao-yin, WU Xian-hua, ZHU Li-ya, et al(高小茵，吴献花，朱利亚，等). Precious Metals(贵金属)，2005，26(2)：42. [7] WEI Xiao-feng，ZHAN Ying-ying，YU Xiu-jin，et al(魏笑峰, 詹瑛瑛，俞秀金，等). Journal of Fuzhou University(Natural Science)(福州大学学报·自然科学版), 2007, 35(1)：126.
