摘要
向5mL水样中加入0.1g NaCl,溶解后加入50μL三氯甲烷(萃取剂)和300μL丙酮(分散剂),以4 000r·min-1的转速离心2min。采用气相色谱-质谱法测定所得有机相中5种芳香胺的含量,以内标法定量。结果表明:5种芳香胺的质量浓度在一定范围内与其峰面积与内标的峰面积的比值呈线性关系,检出限(3S/N)为0.000 1～0.001 5mg·L-1。以实际空白水样为基体进行加标回收试验,回收率为94.7%～106%,测定值的相对标准偏差(n=6)均小于5.0%。
0. 1 g of NaC1 was added into 5 mL of water sample, and after dissolving, 50 μL of trichloromethane as extractant and 300 μL of acetone as dispersant were added and the mixture was centrifuged at a rotating speed of 4 000 r · min^-1 for 2 min. The 5 aromatic amines in the organic phase were determined by GC-MS, and the internal standard method was used for quantitative analysis. As shown by the results, linear relationships between the ratios of peak areas of 5 aromatic amines to peak areas of the internal standard and the mass concentration of 5 aromatic amines were found in definite ranges, with detection limits （3S/N） in the range of 0.000 1-0.001 5 mg · L^-1. Test for recovery was made by standard addition method on the base of actual blank water, giving results in the range of 94.7%-106%, and RSDs （n=6） were less than 5.0%.
作者
丁明珍
彭璟
马少玲
姜勇
秦文璟
DING Mingzhen;PENG Jing;MA Shaoling;JIANG Yong;QIN Wenjing(College of Chemistry and Life Science,J inling College,Nanjing University,Nanjing 210089,China)
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2018年第10期1172-1176,共5页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
江苏省高校自然科学基金面上项目(16KJB150016)
南京大学金陵学院教学改革项目(0010521611)
江苏省自然科学基金项目(BK20131343)
关键词
气相色谱-质谱法
分散液相微萃取
芳香胺
环境水样
内标法
GC-MS
dispersive liquid-liquid microextraction
aromatic amine
environmental water sample
internal standard
