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三卤甲烷是饮水氯化消毒过程中的主要副产物,而且它对人身体有严重的伤害性,所以其含量的准确测定对消毒副产物产生情况的评价有重要意义。另外,三卤甲烷具有挥发性,不够稳定,且三卤甲烷生成反应并非瞬间的,而是在加氯一段时间后仍持续进行反应,生成量会随着反应时间的增加而增大,所以诸多因素影响三卤甲烷的测定准确性,例如检测时间、保存温度、加保存试剂等。因此,本文参考国家标准的同时通过实验对保存剂及保存方式进行研究,筛选出最佳保存条件及最佳检测时间。
Trihalomethane is the main by-product of drinking water chlorination process, and it is very harmful to the human body. Therefore, the accurate determination of its content is important for the evaluation of the production of disinfection by-products. In addition, the trihalomethanes are volatile, not stable enough, and the trihalomethane formation reaction is not instantaneous, but after a period of chlorination continued reaction, the amount of formation will increase with the reaction time, so many Factors affect the determination of trihalomethanes accuracy, such as testing time, storage temperature, plus storage reagents. Therefore, this paper refers to the national standard at the same time through experiments on preservatives and preservation methods to study, screening out the best storage conditions and the best detection time.