Simultaneous Determination of Platinum (Ⅳ) and Palladium (Ⅱ) Using Spectrophotometry Method
MA Dong-lan1, WANG Yun2, MA Kuang-biao1, WANG Jin-ye3*
1. College of Chemical and Environmental Science, Henan Normal University, Xinxiang 453007, China 2. Department of Hematology, Xinhua Hospital, Affiliated to Shanghai Jiaotong University, Shanghai 200092, China 3. College of Biomedical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
Abstract：The N-(m-methylphenyl)-N’-(sodium p-aminobenzenesulfonate)-thiourea (MMPT) was good reagent of water solubility. In the medium of an HAc-NaAc buffer solution and hexadecyltrimethylammonium bromide (CTMAB), MMPT can react with platinum (Ⅳ) and palladium (Ⅱ) to form green and brown soluble complex. The maximum absorbance of the complex was at λPtmax=754.4 nm and λPdmax=304.6 nm. Beer’s law was obeyed with the concentration in the range of 0-32.0 μg Pt(Ⅳ)/25 mL and 0-25.0 μg Pd(Ⅱ)/25 mL for platinum (Ⅳ) and palladium(Ⅱ) respectively. The correlated coefficient was r754.4=0.999 5 for platinum (Ⅳ); and r304.6=0.999 9 for palladium (Ⅱ). Their molar absorption coefficients were εPt754.4=8.6×104 L·mol-1·cm-1 and εPd304.6=7.4×104 L·mol-1·cm-1 respectively. The contents of platinum (Ⅳ) and palladium (Ⅱ) were converted by determination of the absorbency of mix solution of platinum (Ⅳ) and palladium (Ⅱ) at 754.4 and 304.6 nm. Only Cu2+ and Co2+ interfered with the determination of palladium (Ⅱ) among 50 coexistent ions, so the selectivity was good. It can be used for the determination of content of synthesis samples. The relative standard deviation (RSD) was less than 2.0%, and the recovery(%)was in the range of 96%-104%. The results are satisfactory. Because the reagent reacts with platinum (Ⅳ) and palladium (Ⅱ) to form water soluble complex and does not require pre-separation for simultaneous determination of platinum (Ⅳ) and palladium (Ⅱ), the method is easy to operate, rapid and environment-friendly.
马东兰1,王 昀2,马狂飚1,王瑾晔3* . 光度法同时测定铂和钯[J]. 光谱学与光谱分析, 2009, 29(10): 2833-2837.
MA Dong-lan1, WANG Yun2, MA Kuang-biao1, WANG Jin-ye3* . Simultaneous Determination of Platinum (Ⅳ) and Palladium (Ⅱ) Using Spectrophotometry Method . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(10): 2833-2837.
[1] GAO Qin-yi, HE Gui-jin, SHU Qiang, et al(高沁怡，何贵金，舒 强，等). Chin. J. Nucl. Med.(中华核医学杂志)，2004，24(6): 369. [2] HE Gui-jin, SU Qi, GAO Qin-yi, et al(何贵金，苏 琪，高沁怡，等). Chin. J. Surg,(中华外科杂志)，2004，42(17)：1069. [3] Szucov L, Travnicek Z, Zatloukal M, et al. Bioorganic and Medicinal Chemistry, 2006, 14(2)：479. [4] Quiroga A G, Pérez J M, Montero E I, et al. J. Inorg. Biochem., 1998, 70(2)：117. [5] LIU Wei-ping, ZHANG Yong-li, SUN Jia-lin(刘伟平，张永俐，孙加林). Precious Metals(贵金属)，2005, 26(1)：47. [6] WU Jian-jun, LI Gai-ru, YUAN Wen, et al(吴建军, 李改茹, 袁 雯, 等). Journal of Analytical Science(分析科学学报)，2004，20(2)：151. [7] DUAN Yun, CHANG Hai-zhou, LI Gai-ru, et al(端 允, 常海洲, 李改茹, 等). Chinese Journal of Analytical Chemistry(分析化学)，2003，31(9)：1069. [8] GAO En-jun, DING Li-na, LIU Qi-tao, et al(高恩君, 丁丽娜, 刘祁涛, 等). Acta Phys. Chim. Sin.(物理化学学报)，2005, 21(10)：1091. [9] Huq F, Tayyem H, Abdullah A, et al. Asian J. Chem., 2006, 18(1): 65. [10] FAN Da-min, YANG Xiao-liang, GUO Zi-jian(范大民, 杨晓亮, 郭子建). Chinese Journal of Inorganic Chemistry(无机化学学报), 2007, 23(7)：1206. [11] MENG Hong, YUN Zuo-min(孟 红, 云作敏)，Gold(黄金), 2005, 26(2)：51. [12] JIE Wen-xiu, LI Hui-zhi, HAN Bin(解文秀，李慧芝，韩 斌). Chinese Journal of Spectroscopy Laboratory(光谱实验室)，2005, 22(1): 62. [13] DING Xi-feng, ZHANG Jing-chao, ZHU Yan-ying(丁喜峰, 张景超, 朱艳英). Physics Exainination and Testing(物理测试)，2006，(2)：26. [14] BAO Chang-li, ZHAO Shu-jie, LIU Guang-min, et al(鲍长利，赵淑杰， 刘广民，等). Chinese Journal of Analytical Chemistry(分析化学), 2002，30(2)：198. [15] Khageshuar Singh Patal, KamLesh Shrirash, Paresh Chandra Sharma, et al. Anal. Lett.，2004, 37(9): 1953. [16] Mohammed Bagher Gholivand, Nasrin Nozari, Talanta, 2000, 52: 1055. [17] MA Donglan, YI Ying, MA Kuangbiao, et al. Talanta, 2001, 53: 937.
