固相萃取-气相色谱(SPE-GC)法测定皮革废水中乙酸甲酯和乙酸乙酯  

Determination of methyl acetate and ethyl acetate in leather wastewater by solid phase extraction-gas chromatography(SPE-GC)

作　　者：卓毓科 骆佳慧 余俊逸 张莹莹 ZHUO Yuke;LUO Jiahui;YU Jun-yi;ZHANG Ying-ying(ZhejiangRenxin Testing and Research Institute Co.,Ltd.,Ningbo 315000,China;Zhoushan Solid Waste Pollution Prevention and Control Center(Zhoushan Motor Vehicle Exhaust Pollution Prevention and Control Center),Zhoushan 316000,China)

机构地区：[1]浙江人欣检测研究院股份有限公司,浙江宁波315000 [2]舟山市固体废物污染防治中心(舟山市机动车排气污染防治中心),浙江舟山316000

出　　处：《化学工程与装备》2023年第9期219-223,共5页Chemical Engineering & Equipment

摘　　要：为浙江某皮革厂的制革工业废水中乙酸甲酯和乙酸乙酯的污染控制提供数据支撑,建立了固相萃取-气相色谱法测定皮革工业废水中乙酸甲酯和乙酸乙酯含量。在使用C18固相萃取柱预处理样品和2mL/min的萃取流速的方法优化条件下,该方法在0.1~3mg/L线性范围内分离度和线性均良好,乙酸甲酯和乙酸乙酯的线性系数r分别为0.99989和0.99918,方法检出限(MDL)均为0.02mg/L,相对标准偏差RSD值均<3.5%,加标回收率分别为100.51~105.02%和99.48~101.33%。测定实际皮革工业废水水样,生产车间排放口和总排口水样中,乙酸甲酯和乙酸乙酯均有检出。该方法简便、高效,可为制革废水中相关污染物检测提供借鉴。To provide data support for the pollution control of methyl acetate and ethyl acetate in the tannery wastewater of a leather factory in Zhejiang Province,a solid phase extraction-gas chromatography method was established to determine the contents of methyl acetate and ethyl acetate in the tannery wastewater.Under the optimized conditions of using C18 solid phase extraction column to pretreat the sample and the extraction flow rate of 2 mL/min,the method has good resolution and linearity in the linear range of 0.1~3 mg/L,the linear coefficients r of methyl acetate and ethyl acetate are 0.99989 and 0.99918,respectively,the detection limit(MDL)of the method is 0.02 mg/L,the RSD value is less than 3.5%,and the recovery rate of standard addition is 100.51~105.02%and 99.48~101.33%.Methyl acetate and ethyl acetate were detected in the water samples of the actual leather industry wastewater,and in the water samples of the discharge outlet and the total discharge outlet of the production workshop.This method is simple and efficient,and can provide reference for the monitoring of relevant pollutants in tannery wastewater.

关 键 词：乙酸甲酯 乙酸乙酯 固相萃取 皮革废水 

分 类 号：X832[环境科学与工程—环境工程] O657.7[理学—分析化学]