Analytical Applications of 2,6-Diacetylpyridine-bis-4-phenyl-3-thiosemicarbazone (2,6-DAPBPTSC): Determination of Cd(II) in Foods and Water Samples
作者:S. Adinarayana Reddy、K. Janardhan Reddy、A. Varada Reddy
DOI:10.1002/jccs.201000036
日期:2010.4
To the determination of trace amount of Cd(II) present in food and water samples, a selective and extractive spectrophotometric method were developed with 2,6‐diacetylpyridine‐bis‐4‐phenyl‐3‐thiosemicarbazone as a complexing agent. The yellowish orange colored metal complex, Cd(II)‐2,6‐DAPBPTSC with 1:1 (M:L) composition was extracted in to cyclohexanol at pH 9.5 and was shows maximum absorbance at
为了测定食品和水样中的痕量Cd(II),开发了一种选择性和萃取分光光度法,以2,6-二乙酰基吡啶-双-4-苯基-3-硫代半碳酮为络合剂。将具有1:1(M:L)成分的淡橙色橙色金属络合物Cd(II)-2,6-DAPBPTSC萃取至pH 9.5的环己醇中,并在λmax 390 nm下显示最大吸光度。该方法遵循比尔定律,在1.12-11.25 ppm范围内,Cd(II)-2,6-DAPBPTSC络合物的相关系数为0.972,表明这两个变量之间呈线性关系。摩尔吸光度和桑德尔灵敏度为6.088×10 4 L mol -1 cm -1和0.0018μgcm -2, 分别。室温下的不稳定性常数由Asmus方法(1.447×10 -4)计算得出。通过相对标准偏差(n = 5)0.929和检出限0.0060μgmL -1检验该方法的精密度和准确性。还研究了各种阳离子和阴离子的干扰作用。该方法成功地用于食品和