本文报道了采用一种自制简易光反应器进行的氯仿光解反应试验。试验结果表明;在近紫外光源的照射下,T_iO_2悬浮液中的氯仿能够发生催化降解反应;加入双氧水能明显加快该降解反应的速率;用氯离子选择性电极法定量研究低浓度氯仿的T_iO_2催化光解反应过程具有精确、稳定、简便快速、不污染样品的优点。 This paper reports a photochromic reaction of chloroform using a simple self-made photoreactor. The results showed that under the irradiation of near ultraviolet light, the chloroform in the T_iO_2 suspension could catalyze the degradation reaction; the addition of hydrogen peroxide could accelerate the rate of the degradation reaction; the chloride ion selective electrode method was used to quantitatively study the catalytic effect of T_iO_2 The photodecomposition reaction has the advantages of being accurate, stable, simple and rapid, and not contaminating the sample.