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HH-THC-30 2021总烃毛细管柱应用
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HH-THC-30 2021总烃毛细管柱应用

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产品名称:HH-THC-30 2021总烃毛细管柱应用

产品型号:HH-THC-30

产品厂商:浩瀚色谱(山东)应用技术开发有限公司

简单介绍

2021总烃毛细管柱应用,液化石油气,二甲醚,甲缩醛,乙缩醛,苯系物,增塑剂,塑化剂,医疗器械,环氧乙烷,三甲胺,二甲醚,乙缩醛,乙醇,二叔丁基过氧化物,DTBP,炼厂气,氨水

HH-THC-30 2021总烃毛细管柱应用的详细介绍

2021总烃毛细管柱应用
2021总烃毛细管柱应用 详细信息:

固定相:脱活毛细管柱

规格:30m/0.53mm

型号:HH-THC
应用:环境空气/固定污染源废气,甲烷,总烃,非甲烷总烃测定



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。


2021总烃毛细管柱应用 测试谱图:





2021 Total Hydrocarbon Capillary Column Application
2021 Total Hydrocarbon Capillary Column Application Details:

Stationary phase: deactivated capillary column

Specification: 30m/0.53mm

Model: HH-THC
Application: Determination of ambient air/stationary pollution source exhaust gas, methane, total hydrocarbons, non-methane total hydrocarbons



Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. uses direct injection differential gas chromatography to determine the amount of non-methane total hydrocarbons (NMHC). The experiment researched the influence of analysis conditions, gas source and quantitative method on the quantitative accuracy of NMHC. Considering the lower baseline response and higher sensitivity, choosing appropriate hydrogen and air flow rates, the detection limit of the NMHC method is 0.03 mg/m3 (calculated as carbon), which can ensure the accuracy of low-concentration samples 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, and can be appropriately prepared according to the ratio of total hydrocarbon and methane in the sample; for low-concentration samples, the total hydrocarbon with air as the bottom gas The response sensitivity is lower than the response sensitivity of total hydrocarbons with nitrogen as the bottom gas. When the standard gas with nitrogen as the bottom gas is used to quantify the content of total hydrocarbons in the air, the measurement results will have a large deviation, and may even produce negative values. It should be used to remove hydrocarbons. Air is the standard gas of the bottom gas to quantify air samples; during the determination of some samples, the total hydrocarbon does not only show a peak, and the relevant conditions need to be adjusted before the determination.


2021 total hydrocarbon capillary column application test spectrum:

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