摘要
建立了顶空-气相色谱法测定化工废水中甲醇、丙酮、异丙醇、甲苯的分析方法。化工废水中甲醇、丙酮、异丙醇和甲苯经DB-624（30 m×320μm×1.80μm）毛细管柱气相分离,用保留时间定性,外标法定量。实验结果表明,甲醇、丙酮、异丙醇和甲苯的浓度在2~100 mg/L范围内与对应的峰面积呈良好的线性关系,检出限分别为0.2、0.5、1.1、0.1 mg/L。该方法的精密度和准确度较高,相对标准偏差小于2%,加标回收率在95.7%~105.0%之间。
A method for the determination of methanol,acetone,isopropanol,toluene in chemical wastewater by headspace gas chromatography was established. In chemical wastewater of methanol,acetone,isopropanol and toluene matter was measured by DB-624（ 30 m × 320 μm × 1. 80 μm） capillary column gas phase separation,the retention time was qualitative quantified by external standard method. The experimental results showed that t methanol,acetone,isopropanol and toluene concentration showed a good linear relationship with the peak area corresponding in 0. 2 ~100. 0 mg / L range,the limits of detection were 1. 1,0. 1,0. 2,0. 01 mg / L. The precision and accuracy of the method was high,the relative standard deviation was less than 2%,and the recovery of standard addition was 95. 7% ~ 105. 0%.
出处
《广州化工》
CAS
2015年第20期137-139,共3页
GuangZhou Chemical Industry
关键词
顶空
气相色谱法
甲醇
丙酮
异丙醇
甲苯
headspace
gas chromatography
methanol
acetone
isopropanol
toluene
