本文报道一种用直链烷基苯磺酸盐制成的PVC膜苯酰胆碱电极,电极对苯酰胆碱的线性响应下限为4×10~(-7)mol/L,对胆碱的选择系数为6×10~(-4),均比文献报道的同类电极为优。用本电极跟踪苯酰胆碱的催化水解反应,并从水解反应抑制百分率定性判断有机磷的存在,有助于有机磷农药中毒的现场鉴别。 This paper reports a linear alkyl benzene sulfonate made of PVC membrane phenylcholine electrode, the linear response of the electrode to the lower limit of 4 × 10 -7 mol / L of choline The selection coefficient is 6 × 10 ~ (-4), which is better than the similar electrode reported in the literature. This electrode was used to trace the catalytic hydrolysis of phenylcholine, and qualitatively determine the existence of organic phosphorus from the inhibition percentage of hydrolysis reaction, which is helpful for on-site identification of organophosphorus pesticide poisoning.