在体测定神经递质的针型组织传感器

In Vivo Neurotransmitters Detected by Needle-type Tissue Sensor

研制了一种不锈钢针型组织传感器。以菠菜植物组织作为敏感材料，识别神经递质多巴胺。对传感器的最适温度、ｐＨ值、选择性等进行了讨论，其线性范围为８．０×１０（－７）～１．６×１０（－３）ｍｏｌ／Ｌ，检出下限为４．６×１０（－７）ｍｏｌ／Ｌ，线性回归方程为Ｙ＝－６．３３±０．３０５Ｘ，相关系数，ｒ＝０．９９８，响应时间小于３８，寿命约为２０～３０ｄ，在体实验结果较为满意。

A novel needle-type plant tissue-based biosensor was constructed.It can function not only as a sensor,but also as an acupuncture needle.The spinach tissue was used as sensing material to detect selectivey the neurotransmitter-Dopamine(DA).The linear range of the sensor is 8.0×10-7～1.6× 10-3mol/L,Good results were obtained when it was used in experiments in vivo.