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在pH=4.4~5.0的HAc-NaAc介质中,钯(Ⅱ)与盐酸吗啉胍(Abob)反应形成螯合阳离子,它能进一步与二溴荧光素(DBF)、曙红Y(EY),赤藓红(Ery)阴离子反应形成离子缔合物,引起超瑞利散射(HRS)显著增强.3个三元体系具有相似的光谱特征,最大HRS波长位于390 nm附近.在一定条件下超瑞利散射增强(ΔIHRS)与Abob的浓度成正比,其线性范围是0.029~3.0μg/mL(DBF),0.14~3.5μg/mL(EY)和0.23~1.9μg/mL(Ery),检出限分别为0.008 6μg/mL(DBF),0.043μg/mL(EY)和0.069μg/mL(Ery).研究了HRS法的适宜反应条件和共存物质的影响,发展了高灵敏、简便快速测定Abob的新方法,可用于尿样中Abob的测定.
Palladium (II) reacts with Abob hydrochloride in the HAc-NaAc medium at pH = 4.4-5.0 to form chelating cations, which can further interact with DBF, EY, Ery anions react to form ion-association complexes, resulting in significant enhancement of the super-Rayleigh scattering (HRS). The three ternary systems have similar spectral characteristics and the maximum HRS wavelength is around 390 nm. Under certain conditions, The linear range of the concentration of Abi was 0.029 ~ 3.0μg / mL (DBF), 0.14 ~ 3.5μg / mL (EY) and 0.23 ~ 1.9μg / mL (Ery) (DBF), 0.043μg / mL (EY) and 0.069μg / mL (Ery) respectively.The suitable reaction conditions and the influence of coexisting substances in HRS method were studied, and the high sensitivity, simple and rapid determination of Abob New method for the determination of Abob in urine samples.