气田采出水挥发酚预处理消泡方法探讨

Discussion on Defoaming Method of Volatile Phenol Pretreatment in Gas Field Produced Water

对气田采出水进行挥发酚测定时,考虑采用加入消泡剂的方法来消除干扰。分别取0.10,0.25,0.50,1.00,1.50,2.00mL FG-7I消泡剂,各自加入250mL实验空白中,做平行比对实验,经实验比选,于250mL预处理样品中加入0.25mL FG-7I消泡剂可有效解决问题,同时扣除加入等量消泡剂的空白样品吸光度,经验证,此方法最大相对偏差为-9.09%^-0.87%,加标回收率为94.4%~97.3%,均达到了实验要求。

In the determination of volatile phenols in produced gas from gas field,the method of adding defoamer is considered to eliminate the interference.Respectively adding 0.10,0.25,0.50,1.00,1.50,2.00 mL FG-7 Idefoaming agent into 250 mL experimental blank samples,after parallel comparison experiment,250 mL pretreatment sample with 0.25 mL FG-7 Idefoaming agent could effectively solve the problem.The maximum relative deviation was between-9.09% and-0.87%,and the recovery was between 94.4%and 97.3%,both meeting the experimental requirements.