HH-BENVII填充柱 汽油中甲醇、苯和甲苯含量检测

近年来,我国对车用汽油产品的质量要求逐步提高,国(Ⅲ)车用汽油,对车用汽油的有害物质限量做出了为严格的限定,我国目前执行的车用汽油标准规定的甲醇含量为不大于0.3%(质量分数),苯含量指标由“不大于2.5%(体积分数)”升级为。
传统的汽油中苯，甲苯和二甲苯测定，采用 串联双柱带尾吹接反吹的多步分离,而后用热导池检测。此法的主要缺点有:设备须改装、所需试剂多、污染大、操作复杂、难掌握。

滕州市浩瀚色谱仪器技术服务有限公司，研发出《汽油中甲醇、苯和甲苯含量检测》，使用一根专用柱，甲醇含量测量结果具有较好的定量重复性,且甲醇、苯和甲苯的检测回收率均可达90%～110%。目前正申请保护。

汽油中甲醇、苯和甲苯含量检测测定参考谱图：



同时供应：甲缩醛专用柱，甲醛专用柱，粗苯中三苯专用柱，液化气专用柱，变压器油专用柱，甲酸甲酯专用柱，农残专用柱，天然气专用柱，定制色谱柱

Detection of methanol, benzene and toluene content in gasoline

In recent years, China's requirements for the quality of motor gasoline products have gradually increased. National (Ⅲ) motor gasoline has imposed stricter limits on the harmful substances in motor gasoline. The current national standards for motor gasoline are currently implemented in China. The content of methanol is not more than 0.3% (mass fraction), and the benzene content index is upgraded from "not more than 2.5% (volume fraction)".
The traditional determination of benzene, toluene and xylene in gasoline uses a multi-step separation with two columns in series with tail blowing followed by back blowing, and then a thermal conductivity cell is used to detect. The main shortcomings of this method are: equipment must be modified, a lot of reagents required, large pollution, complicated operation, and difficult to master.

Tengzhou Haohan Chromatography Instrument Technology Service Co., Ltd. has developed "Detection of Methanol, Benzene and Toluene in Gasoline", using a special column, the methanol content measurement results have good quantitative repeatability, and the detection of methanol, benzene and toluene The recovery rate can reach 90%～110%. Currently applying for protection.

Reference spectra for determination of methanol, benzene and toluene content in gasoline:



At the same time supply: special column for methylal, special column for formaldehyde, special column for triphenyl in crude benzene, special column for liquefied gas, special column for transformer oil, special column for methyl formate, special column for pesticide residue, special column for natural gas, customized column