模拟太阳光下冰相中壬基酚的光解
Environmental Chemistry(2014)
Abstract
本文采用模拟太阳光对比研究了HONO和H2O2体系冰相中壬基酚的降解.考察了模拟太阳光作用下冰相中壬基酚的光转化规律,讨论了壬基酚初始浓度、pH、光照时间对壬基酚去除率的影响.结果表明,初始浓度降低、光照时间延长、pH值升高,壬基酚直接光解时的去除率升高.初始浓度为0.025 mmol·L-1的壬基酚在冰相中直接光解12 h,去除率达36.7%.外加H2O2时,冰相中壬基酚光解受到一定的抑制,且H2O2剂量增加,壬基酚去除率下降.而HONO吸收UV解离出的·OH自由基,促进了冰相中壬基酚的光转化.
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Key words
simulated solar light,ice phase,photo-dissociation
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