| 锰(Ⅱ)-OP-5-Br-PADAP极谱络合吸附波研究 |
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| 引用本文： | 杜芳艳,邓保炜,张亚,刘小艳. 锰(Ⅱ)-OP-5-Br-PADAP极谱络合吸附波研究[J]. 食品科学, 2011, 32(16): 295. DOI: 10.7506/spkx1002-6630-201116063 |
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| 作者姓名： | 杜芳艳 邓保炜 张亚 刘小艳 |
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| 作者单位： | 榆林学院化学与化工学院; |
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| 基金项目： | 陕西省教育厅项目(2010JK925); 陕西省科技厅项目(2010JM2017); 榆林学院重点项目(10GK02) |
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| 摘 要： | 建立简便、快速的锰的极谱分析法,采用线性扫描极谱法对锰-2-(5-溴-2-吡啶偶氮)-5-二乙氨基苯酚(5-Br-PADAP)-聚乙二醇辛基苯基醚(OP)体系进行研究。结果表明:在Na2B4O7-NaOH(pH11.0)缓冲溶液中,锰-2-(5-溴-2-吡啶偶氮)-5-二乙氨基苯酚(5-Br-PADAP)-聚乙二醇辛基苯基醚(OP)络合物在-0.73V(vs.SCE)左右产生一灵敏的吸附波,该波的二阶导数峰峰电流在0.10～0.32μg/mL范围内与锰质量浓度呈线性关系(r=0.9989,n=10)。检出限为0.05μg/mL。经多种电化学方法证明该波为络合物吸附波,其电极过程为不可逆过程,电子转移数为2,此外还验证了多种离子对峰电流Ip'的影响。所拟方法用于大米中锰含量的测定,回收率在94.1%～101.0%之间,相对标准偏差为1.9%。
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| 关 键 词： | 锰 吸附波 2-(5-溴-2-吡啶偶氮)-5-二乙氨基苯酚(5-Br-PADAP) 聚乙二醇辛基苯基醚(OP) |
Polarographic Adsorptive Wave Characteristics of Manganese-2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol-Octyl Polyethylene Glycol Phenyl Ether(5-Br-PADAP-OP) Complex |
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| DU Fang-yan,DENG Bao-wei,ZHANG Ya,LIU Xiao-yan. Polarographic Adsorptive Wave Characteristics of Manganese-2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol-Octyl Polyethylene Glycol Phenyl Ether(5-Br-PADAP-OP) Complex[J]. Food Science, 2011, 32(16): 295. DOI: 10.7506/spkx1002-6630-201116063 |
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| Authors: | DU Fang-yan DENG Bao-wei ZHANG Ya LIU Xiao-yan |
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| Affiliation: | DU Fang-yan,DENG Bao-wei,ZHANG Ya,LIU Xiao-yan(School of Chemistry and Chemical Engineering,Yulin College,Yulin 719000,China) |
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| Abstract: | In order to establish a simple and rapid method for the polarographic analysis of manganese,manganese-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol(5-Br-PADAP)-octyl polyethylene glycol phenyl ether(OP) system was studied by linear sweep polarography.The results showed that in Na2B4O7-NaOH(pH 11.0) buffer solution,manganese-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol(5-Br-PADAP)-octyl polyethylene glycol phenyl ether(OP) complex at-0.73 V(vs.SCE) could produce a sensitive adsorption wave.The second-order ... |
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| Keywords: | manganese adsorption wave 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol(5-Br-PADAP) octyl polyethylene glycol phenyl ether(OP) |
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