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An experimental design study of interferences of clinical relevance of a polytyramine immobilized-enzyme biosensor

机译:聚酪胺固定酶生物传感器对临床相关性干扰的实验设计研究

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The use of a central composite experimental design to determine the extent of interferences of an enzyme biosensor is described. In contrast to methods that change the parameters to be optimized one-at-a-time, simultaneously varying all parameters in a statistical design allows estimation of coefficients that describe interaction between the effects of the interferents and analyte. The analysis also gives the sensitivity (i.e., the slope of the current against concentration plot) for the analyte and interferents. The model system chosen was a glucose sensor in which glucose oxidase was immobilized in electrodeposited polytyramine, with interfering compounds of clinical relevance, uric acid, ascorbic acid and paracetamol. An electrode prepared by cyclic voltammetry of tyramine with three to fifteen cycles effectively reduced the level of interference. [References: 41]
机译:描述了使用中央复合实验设计来确定酶生物传感器的干扰程度。与一次一次更改要优化的参数的方法相反,在统计设计中同时更改所有参数可以估算描述干扰物和分析物影响之间相互作用的系数。分析还给出了分析物和干扰物的灵敏度(即,电流对浓度曲线的斜率)。选择的模型系统是葡萄糖传感器,其中葡萄糖氧化酶固定在电沉积的聚酪胺中,具有临床相关的干扰化合物,尿酸,抗坏血酸和对乙酰氨基酚。通过酪胺的循环伏安法以三到十五个循环制备的电极可有效降低干扰水平。 [参考:41]

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