A novel strontium tungstate (SrWO₄ NPs) catalyst decorated on graphene oxide (GrO) network (SrWO₄ NPs/GrO) was synthesized by direct sonochemical method and characterized its textural property. Transition bimetal oxides are considered as an efficient electrocatalyst in the sector of electrochemical sensor. Subsequently, the composite has coated on a screen-printed electrode to prepare a SrWO₄ NPs/GrO modified GCE. Moreover, the X-ray powder diffraction analysis (XRDA), TEM, elemental analysis (EAs) and electrochemical methods (ECMs) were used to confirm composite of SrWO₄ NPs/GrO. Electrochemical behaviors (CV and amperometric methods) of cancer toxic chemical (analyte) at amperometric modified electrodes were analyzed. Besides, the effective and enrichment of roxarsone sensor is due to SrWO₄ NPs and GrO sheets. Moreover, optimized electrochemical sensor results have showed by amperometric method (i-t) and roxarsone cathodic peak responses are highly linear from 35 nM to 1816.5 μM. Further, the modified sensor detection limit (LOD) is 22.5 nM (S/N = 3). In addition, the modified electrode and sensors were analyzed to calculate the roxarsone concentration in food products. Hence, this sensor strategy has enables and good opportunities for determination of toxic chemicals in various practical and real time applications.

通过直接声化学法合成了一种新型的装饰在氧化石墨烯（GrO）网络上的钨酸锶（SrWO ₄ NPs）催化剂（SrWO ₄ NPs / GrO），并表征了其结构性质。在电化学传感器领域，过渡双金属氧化物被认为是一种有效的电催化剂。随后，将复合材料涂覆在丝网印刷的电极上，以制备SrWO ₄ NPs / GrO改性的GCE。此外，使用X射线粉末衍射分析（XRDA），TEM，元素分析（EA）和电化学方法（ECM）来确定SrWO _4的复合物。NP / GrO。分析了安培修饰电极上的癌症有毒化学物质（分析物）的电化学行为（CV和安培方法）。此外，由于SrWO ₄ NPs和GrO薄片的存在，使roxarsone传感器的有效和丰富。此外，通过安培法（it）显示优化的电化学传感器结果表明，从35 nM到1816.5μM，洛克沙酮的阴极峰响应高度线性。此外，修改后的传感器检测极限（LOD）为22.5 nM（S / N  = 3）。此外，还对修饰的电极和传感器进行了分析，以计算食品中的洛沙酮浓度。因此，该传感器策略在各种实际和实时应用中具有启用和确定有毒化学物质的良好机会。