PMF-6 气相色谱六通阀气体进样技巧

气相色谱六通阀气体进样技巧，液化石油气，二甲醚，甲缩醛，乙缩醛，乙醇，室内空气，焦炉煤气，炼厂气，天然气，变压器油，多氯联苯，植物油，6号溶剂残留，裂解进样器，三甲胺

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。

气相色谱六通阀气体进样技巧
气相色谱六通阀气体进样技巧 详细信息：

在气相色谱法,库仑法仪器分析中,气体进样操作不当是定量分析误差的主要来源之一.进样系统的原理,结构,使用的材料,进样时的温度,进样量,进样速度,进样用的工具都会对分析结果的重复性和准确性产生直接影响.以气相色谱气体分析为例说明常压气体进样时六通阀定体积进样的使用.

应用实例：环境空气/固定污染源废气中非甲烷总烃的测定

滕州市浩瀚色谱仪器技术服务有限公司，通过采用三通连接两个具有1.0m L定量环的六通阀,以双柱单FID检测器的气相色谱仪对环境中的非甲烷总烃进行测定。总烃的浓度扣除甲烷浓度和氧的干扰,即可得到非甲烷总烃的浓度,可以实现当次分析样品,得到包含总烃、甲烷的图谱,完成总烃、甲烷、非甲烷总烃浓度的测定。当进样体积为1.0m L时,总烃的检出限为:1.6×10-2mg/m3,甲烷的检出限为:1.3×10-2mg/m3。采用单FID检测器,单次注射样品,消除多次注射样品和双FID检测器因灵敏度差异引起的误差;同时,改进没有使用十通阀等复杂且并不常用的配件,充分利用了实验室现有的仪器条件,适合条件类似的实验室进行改进。


气相色谱六通阀气体进样技巧 图片及安装图纸：




Gas sampling technique with six-port valve for gas chromatography
Gas sampling technique with six-port valve for gas chromatography

Matters needing attention and some skills in the six-way valve sampling of atmospheric gas in gas chromatography.Appropriate application of these skills helps to ensure the accuracy and reproducibility of the analysis.


In gas chromatography and coulometric instrument analysis, improper gas sampling operation is one of the main sources of quantitative analysis errors. The principle, structure, materials used, temperature at the time of injection, sample volume, and sample injection Speed and the tools used for sample injection will have a direct impact on the repeatability and accuracy of the analysis results. Take gas chromatography gas analysis as an example to illustrate the use of six-way valve fixed-volume injection during atmospheric gas injection.

Application example: Determination of non-methane total hydrocarbons in ambient air/stationary pollution source exhaust gas

Tengzhou Haohan Chromatography Instrument Technology Service Co., Ltd. uses a three-way connection with two six-way valves with a 1.0 mL quantitative ring to determine the total non-methane hydrocarbons in the environment by a gas chromatograph with a double column and a single FID detector. The concentration of total hydrocarbons deducts the interference of methane concentration and oxygen, and the concentration of non-methane total hydrocarbons can be obtained, which can realize the current analysis of samples and obtain a map containing total hydrocarbons and methane, and complete the concentration of total hydrocarbons, methane, and non-methane total hydrocarbons. Determination. When the injection volume is 1.0ml, the detection limit of total hydrocarbons is 1.6×10-2mg/m3, and the detection limit of methane is 1.3×10-2mg/m3. Using single FID detector, single injection of samples, eliminating errors caused by multiple injection samples and dual FID detectors due to sensitivity differences; at the same time, the improvement does not use complicated and infrequent accessories such as ten-port valves, making full use of the laboratory The existing instrument conditions are suitable for improvement in laboratories with similar conditions.


Gas Chromatography Six-way Valve Gas Sampling Skills Pictures and installation drawings:



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