5%Carbowax 20M Carbopack B填充柱 顶空气相色谱测定大气污染物中甲醇含量

浩瀚色谱（山东）应用技术开发有限公司(原滕州市浩瀚色谱仪器技术服务有限公司）,是齐鲁大地一家从事色谱仪器技术开发，技术推广的技术型企业，研发出多款新型产品。（一）专用色谱柱：1.氯乙suan直接进样分析专用柱2.氯化氢直接进样分析专用柱3.氯QI直接进样分析专用柱4.四氟化硅直接进样分析专用柱5.六氟二甲基硅醚分析专用柱6.氨气直接进样分析专用柱（二）痕量分析专用气相色谱仪：1.高纯气体中痕量水（ppb级）分析专用气相色谱仪2.纯苯中痕量噻吩（ppb级）分析专用气相色谱仪（三）防腐型气相色谱仪，并成功应用于氟气，氟化氢，氯QI，氨气，酰氯，氯化氢，三氯氢硅，四氟化硅，氯YI酸，氯HUA亚砜，硫化物，二氯化硫等腐蚀性物质检测，产品遍布各个行业及地区，其中不乏有大型央企---中石油，中储粮，秦山核电站，中纺集团等，部分出口。

公司主要业务

1.通用气相色谱仪生产销售：氢火焰检测器气相色谱仪，热导检测器气相色谱仪，火焰光度检测器气相色谱仪，氮磷检测器气相色谱仪，电子捕获检测器气相色谱仪。

2.便携式气相色谱仪，在线气相色谱仪生产销售。

3.专用气相色谱仪研发制造：氧化锆检测器气相色谱仪，氦离子检测器气相色谱仪，氩离子检测器气相色谱仪等。

4.防腐气相色谱仪

5.二维，多维气相色谱仪

6.高效液相色谱仪

7.实验室纯水机，顶空进样器，自动进样器，热解析仪，氮氢空发生器，色谱耗材（色谱柱，石墨垫，稳压阀，压盖钳，顶空瓶，7725进样阀等），分光光度计，电子天平，水分测定仪，干燥箱，离心机，玻璃仪器，化学试剂等整套实验室设备生产销售。

8.提供技术转让，建立分析方法。

9.从事旧色谱以旧换新的业务。

10.色谱柱研制，定做。

11.承接样品的检测业务。

12.承接国内外色谱仪器的维修，改装业务。

浩瀚色谱（山东）应用技术开发有限公司，以客户为中心，想客户所想，销售的不仅仅是产品，重要的是帮助客户解决问题，架起心灵沟通的桥梁。

名称：填充柱

色谱固定液：5%聚乙二醇
载体：石墨炭黑80-120目

规格：2m*3mm，2m*1/8

型号：5%Carbowax 20M Carbopack B

应用： HJ T33-1999 固定污染源排气中甲醇的测定气相色谱法

 适用范围

1.1 本标准适用于固定污染源有组织排放和无组织排放的甲醇测定。

1.2 以3倍噪音色谱峰高值计算，当色谱进样量为1.0 ml时，方法的检出限为2 mg/m³；定量测定的浓度范围为5.0-10⁴ mg/m³。

2 方法原理
      载气携带含有甲醇(CH₃OH）的试样通过装有固定相的色谱柱，流出色谱柱的甲醇由氢火焰离子化检测器(FID)测定。以标准样品色谱峰的保留时间进行定性，以峰高（或峰面积）定量。

浩瀚色谱（山东）应用技术开发有限公司首先使用纯水为吸收液,吸收空气中的甲醇,再采用顶空气相色谱法分析吸收液中甲醇浓度,由此建立了自动顶空5%Carbowax 20M Carbopack B填充柱气相色谱法测定空气和废气中甲醇的方法,并对自动顶空进样条件进行了优化。结果表明,当采样体积为24 L、吸收液体积5 mL时,该方法的低检出浓度为0.1 mg/m3,相对标准偏差为2.1%～5.3%,加标回收率为95%～108%。该法操作简单,具有较好的灵敏度和的准确度,自动化程度高,可连续完成样品的前处理、样品进样和色谱分析。


顶空气相色谱测定大气污染物中甲醇含量  测试谱图：


Determination of Methanol in Air Pollutants by Headspace Gas Chromatography
Determination of Methanol in Air Pollutants by Headspace Gas Chromatography Details:

Name: Packed Column

Chromatographic fixative: 5% polyethylene glycol
Carrier: graphite carbon black 80-120 mesh

Specifications: 2m*3mm, 2m*1/8

Model: 5%Carbowax 20M Carbopack B

Application: HJ T33-1999 Determination of methanol in exhaust gas from stationary pollution sources by gas chromatography



 Scope of application

1.1 This standard is applicable to the determination of methanol in organized and unorganized emissions from stationary pollution sources.

1.2 Calculated by 3 times the noise chromatographic peak height, when the chromatographic injection volume is 1.0 ml, the detection limit of the method is 2 mg/m3; the concentration range of quantitative determination is 5.0-104 mg/m3.

2 Principles of the method
      The carrier gas carries a sample containing methanol (CH3OH) through a chromatographic column equipped with a stationary phase, and the methanol flowing out of the chromatographic column is detected by a hydrogen flame ionization detector (FID). Qualitative by the retention time of the standard sample chromatographic peak, quantitative by peak height (or peak area).

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. first used pure water as the absorption liquid to absorb methanol in the air, and then used headspace gas chromatography to analyze the methanol concentration in the absorption liquid, thus establishing an automatic headspace 5% Carbowax 20M Carbopack B. A method for the determination of methanol in air and waste gas by packed-column gas chromatography, and the automatic headspace injection conditions were optimized. The results show that when the sampling volume is 24 L and the absorption liquid volume is 5 mL, the minimum detection concentration of this method is 0.1 mg/m3, the relative standard deviation is 2.1%-5.3%, and the recovery rate of standard addition is 95%-108% . The method is simple to operate, has good sensitivity and reliable accuracy, and has a high degree of automation. It can continuously complete sample pretreatment, sample injection and chromatographic analysis.


Determination of methanol content in air pollutants by headspace gas chromatography Test spectrum: