摘要
建立了糠醛衍生-气相色谱/质谱法测定地表水中肼和偏二甲基肼两种肼类化合物的方法,优化了实验条件。在200mL水样(pH=7)中加入10mL0.05g/mL的糠醛衍生试剂,室温下反应2h,用15mL二氯甲烷萃取10min,氮吹至1.0mL后进样分析。本方法在0～100μg/L范围内线性良好,相关系数大于0.996。检出限分别为0.70μg/L和0.88μg/L;地表水加标样中肼和偏二甲基肼的RSD均小于21%(n=6);肼加标样品的回收率在71%～130%之间,偏二甲基肼加标样品的回收率在82%～124%之间。
The method to determine hydrazine and unsymmetrical dimethyl hydrazine in surface water by furfural derivation and GC/MS analysis was established.The analytical parameters were optimized.10-mL furfural derivation reagent was added into 200-mL sample（pH=7） at room temperature to react for two hours,and then the derivative product was extracted using 15-mL dichloromethane for 10 minutes.The sample was blown using nitrogen until becoming 1.0 mL volume for injection.This method had a good linearity in the range of 0～100 μg/L（R0.996）.The detection limits of hydrazine and unsymmetrical dimethyl hydrazine were 0.70 and 0.88 μg/L,respectively.The RSDs of the spiked water samples for both hydrazine and unsymmetrical dimethyl hydrazine in surface water were less than 21%（n=6）.The recoveries of the spiked samples of hydrazine and unsymmetrical dimethyl hydrazine were 71%～130% and 82%～124%,respectively.
出处
《四川环境》
2011年第1期30-34,共5页
Sichuan Environment
