碱性条件下,对乙酰氨基酚对鲁米诺-过氧化氢-纳米银化学发光体系有较强的抑制作用,基于此,结合流动注射技术,建立了测定对乙酰氨基酚的新方法.研究了影响化学发光强度的各种因素,并初步探讨了可能的发光机理.在最佳实验条件下,对乙酰氨基酚浓度在2.0 ×10-8～1.0 ×10-4 mol/L范围内与相对发光强度呈线性关系,检出限(3σ)为4.0×10-9 mol/L.对1.0×10-7 mol/L的对乙酰氨基酚平行测定9次,相对标准偏差为2.6％.该法用于片剂中扑热息痛含量的测定,结果令人满意.
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