【摘要】 采用固相萃取-GC-MS/MS法测定水中10种N-亚硝胺类化合物,通过试验优化前处理和测定条件,使方法在0. 500μg/L～100μg/L范围内线性良好。方法检出限为0. 6 ng/L～2. 1 ng/L,混合标准溶液6次测定结果的RSD <5%。将该方法用于测定实际水样,结果除N-亚硝基二甲胺、N-亚硝基甲基乙基胺和N-亚硝基二丙胺以外,其余目标物均为未检出,加标回收率为73. 1%～97. 6%。更多还原

【Abstract】 The solid phase extraction-GC-MS/MS method was used to determine 10 N-nitrosamines in water. The pretreatment and determination conditions were optimized by experiments. The linearity of the method was good in the range of 0. 500 μg/L to 100 μg/L. The method detection limits were 0. 6 ng/L ～ 2. 1 ng/L,the RSD of 6 duplicate measurements for mixed standard solution was less than 5%. The method was applied in actual water samples. The results showed that all the target compounds were undetected except N-nitroso-dimethylamine,N-nitroso-methyl ethylamine and N-nitroso-dipropylamine. The recoveries were in range of 73. 1% ～97. 6%.更多还原