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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Phenol formation in gamma radiolysis of aqueous benzene solution with sodium hypochlorite
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Phenol formation in gamma radiolysis of aqueous benzene solution with sodium hypochlorite

机译：次氯酸钠对苯水溶液进行γ辐射分解时苯酚的形成

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摘要

Phenol formation by gamma radiolysis of an aqueous benzene solution containing sodium hypochlorite is reported. The phenol formation in a benzene solution containing sodium hypochlorite irradiated with ~(60)Co γ-rays is about six times higher than that without sodium hypochlorite. Ten micromolar sodium hypochlorite enhanced the formation of phenol up to a total dose of 6 Gy. Above 6 Gy in solutions containing sodium hypochlorite, the rate of phenol yield sharply decreased and was essentially the same as that without sodium hypochlorite. The yield of phenol with sodium hypochlorite is 0.89 μmol J~(-1) and is larger than the sum of yield for the radicals and reactive oxygen species by water radiolysis such as ?OH, e -, H, H_2, and H_2O_2. The formation of phenol with sodium hypochlorite was reduced by NaCl. Results suggest that the radiolytic formation of phenol in a benzene solution with sodium hypochlorite relates to the reaction process involving chlorine atoms. Sodium hypochlorite can be applied as a sensitizer for a benzene chemical dosimetry system. The lower limit of dose detection calculated from the detection limit of phenol and the G value of phenol was estimated to be 1 × 10~(-3) Gy.
机译：据报道，通过γ辐射分解含有次氯酸钠的苯水溶液可形成苯酚。含〜（60）Coγ射线辐照的含有次氯酸钠的苯溶液中的苯酚生成量比不含次氯酸钠的苯溶液高约6倍。十微摩尔次氯酸钠可增强苯酚的形成，总剂量可达6 Gy。在含有次氯酸钠的溶液中，当高于6 Gy时，苯酚的收率急剧下降，与没有次氯酸钠的情况基本相同。次氯酸钠与苯酚的收率为0.89μmolJ〜（-1），大于水分解产生的自由基和活性氧（如αOH，e-，H，H_2和H_2O_2）的总和。 NaCl可减少次氯酸钠与苯酚的形成。结果表明，次氯酸钠在苯溶液中辐射分解苯酚与涉及氯原子的反应过程有关。次氯酸钠可用作苯化学剂量测定系统的敏化剂。由苯酚的检出限和苯酚的G值算出的剂量检测下限估计为1×10〜（-3）Gy。

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