硅烷化玻璃微球总烃柱 气相色谱法测定大气中非甲烷总烃量

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。

产品在多个行业使用：以下是部分单位：

1.高等院校（天津大学，沈阳化工大学，河北工业大学，北京化工大学，南京林业大学）

2.研究机构：中国科学院大连化学物理研究所

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：硅烷化玻璃微球总烃柱

规格：2m*3mm，60-80目

使用温度：250°C

编号：20221207001

应用：安捷伦7820A，7890B
环境空气，固定污染源废气中总烃，甲烷，非甲烷总烃的测定 气相色谱法

浩瀚色谱（山东）应用技术开发有限公司,用直接进样差量气相色谱法测定非甲烷总烃(NMHC)量。实验研究了分析条件、气源和定量方式等对NMHC定量准确度的影响。综合考虑较低基线响应和较高灵敏度等,选择合适的氢气和空气流速,测得NMHC方法检出限为0.03 mg/m3(以碳计),该法可低浓度样品分析的准确度。实验结果表明,标准气中CH4和C3H8遵从碳数响应规律,其配比不会影响定量的准确性,可根据样品总烃和甲烷比例适当配制;对于低浓度样品,以空气为底气的总烃响应灵敏度低于氮气为底气的总烃响应灵敏度,采用以氮气为底气的标准气来定量空气中总烃的含量时,测定结果将产生较大偏差,甚可能产生负值,应该用以除烃空气为底气的标准气来定量空气样品;某些样品测定过程中,总烃不只出一个峰,需要调节相关条件再进行测定。

Determination of total non methane hydrocarbons in atmosphere by gas chromatography

Details of determination of total non methane hydrocarbons in the atmosphere by gas chromatography:






Name: Silanized glass microsphere total hydrocarbon column



Specification: 2m * 3mm, 60-80 meshes



Operating temperature: 250 ° C



No.: 20221207001



Application: Agilent 7820A, 7890B

Determination of total hydrocarbon, methane and non methane total hydrocarbon in ambient air and waste gas from fixed pollution sources Gas chromatography








Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. uses direct injection differential gas chromatography to determine the amount of non methane total hydrocarbons (NMHC). The effects of analysis conditions, gas sources and quantitative methods on the quantitative accuracy of NMHC were experimentally studied. Considering the lower baseline response and higher sensitivity, appropriate hydrogen and air flow rates were selected, and the detection limit of NMHC method was 0.03 mg/m3 (measured in carbon), which can ensure the accuracy of low concentration sample analysis. The experimental results show that CH4 and C3H8 in the standard gas follow the carbon number response law, and their ratio will not affect the accuracy of quantification, so they can be properly prepared according to the proportion of total hydrocarbon and methane in the sample; For low concentration samples, the response sensitivity of total hydrocarbon with air as the base gas is lower than that of total hydrocarbon with nitrogen as the base gas. When the standard gas with nitrogen as the base gas is used to quantify the content of total hydrocarbon in the air, the measurement results will have a large deviation, or even a negative value. Therefore, the standard gas with hydrocarbon free air as the base gas should be used to quantify the air sample; During the determination of some samples, the total hydrocarbon has more than one peak, which needs to be determined after adjusting the relevant conditions.










Test spectrogram for determination of total non methane hydrocarbons in the atmosphere by gas chromatography: