中文摘要：

基于汞对K4Fe（CN）6与K3Fe（CN）6的沉淀反应的催化作用和沉积于磁弹性片上的沉淀导致的磁弹性片共振频率的降低，建立了应用磁弹性传感器的催化沉淀无线传感法测定痕量汞的方法。磁弹性传感技术具有能无线检测磁弹性片的共振频率变化的独特性质，这种共振频率变化对应于磁弹性片的质量变化。研究了酸度、试剂等多种因素对测定的影响。在K4Fe（CN）6、K3Fe（CN）6和乙酸的浓度分别为0．001、0．01和0．15mol／L，反应温度和时间分别为55℃和10rain的条件下，测定汞的线性范围为0．4-9．0μg／L；检出限为0．24μg／L。应用本方法测定了水样中的痕量汞，回收率为97．0％-102．6％。

英文摘要：

Based on the catalytic effect of mercury on the precipitation reaction of potassium ferrocyanide with potassium ferricyanide and the precipitation deposited on the magnetoelastic foil resulting in the decrease of resonance frequency of the foil, a catalytic precipitation wireless sensing method for the determination of trace mercury using a magnetoelastic sensor has been developed. The magnetoelastic sensor technique has the unique characteristics of being able to wirelessly detect resonance frequency shifts of a magnetoelastic foil in response to differences in the foil mass. The influence of acidity, chemical and manifold variables on the determination was studied. Under the conditions of the concentrations of potassium ferrocyanide, potassium ferricyanide and acetic acid being 0.001,0.01 and 0.15 mol/L, respectively, and the reaction temperature and time being 55 ℃ and 10 min, respectively, the linear range for the determination of mercury was 0.4 - 9.0 μg/L with the detection limit of 0.24 μg/L. The proposed method was applied successfully for the deter- mination of trace mercury in water samples with the recoveries of 97.0% - 102.6%.