毕业论文摘要翻译成英语，化学专业的，有一些专业术语

Biosensors, which have evolved gradually in recent years, have a bright application prospect in various fields such as foods, medicine, environment monitoring, etc. Among those biosensors, the immunology sensors, which are widely applied in clinical research, are capable of reducing test time significantly, besides, they are easily handled and not vulnerable to contamination. This article mainly focused on the preparation of the immunosensors for the clinical diagnosis of HBV. Utilizing the stable Au-S bond formed by the Mercapto group and gold, thiourea was bonded to the gold electrode, in subsequent steps, glyoxal crosslinker was utilized to bone HBsAb to the electrode, forming a monolayer. Thus, an amperometric immunosensor was prepared for the detection of HbsAg and the electrochemical properties of the electrode were examined by the cyclic voltammetry method. The abovementioned sensor, which is of short response time and high sensitivity, is easy to prepare and operate for th