新型漆酚铁树脂修饰的固体传感器的制备及应用

PREPARATION AND APPLICATION OF NOVEL SOLID SENSOR MODIFIED BY POLYMERIC COMPOUND OF URUSHIOL-Fe

研究了一种用漆酚铁树脂进行化学修饰的固体传感器的制备方法,并初步探讨了其提高金属离子测定灵敏度的机理。在HOAc+NaOAc和KNO3混合介质中,该传感器测定铜离子的线性范围为4×10-9mol/L至2.5×10-7mol/L之间,富集20min后铜离子的检出限为8×10-11mol/L。用于实际水样的测定,平均回收率可达99.10%,结果满意。

Solid sensor modified by urushiolFe resin was prepared for the determination of trace copper in water.Mechanism of increasing sensitivity has been studied.In 0.1 mol/L KNO3 and HOAcNaOAc solution,peak current is linearly correlated with concentration over the range from 4×10-9  mol/L to 2.5×10-7 mol/L.Detection limit(signaltonoise=3) is 8×10-11 mol/L after 20 min accumulation.Using the electrode,Cu2+ in water samples were detected,and average recovery is 99.10%.