HH-THC06硅烷化總烴柱 HJ 604-2017 環(huán)境空氣 總烴

、甲烷和非甲烷總烴的測定 直接進樣-氣相色譜法

4 方法原理

將氣體樣品直接注入具氫火焰離子化檢測器的氣相色譜儀

浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司參照《環(huán)境空氣總烴,甲烷和非甲烷總烴的測定直接進樣-氣相色譜法》HJ604-2017來測定總烴,甲烷和非甲烷總烴.對儀器條件進行優(yōu)化,得出總烴的檢出限為0.007mg/m3,甲烷的檢出限為0.013mg/m3,非甲烷總烴的檢出限為0.015mg/m3,研究0.453-7.21mg/m3濃度的甲烷標(biāo)氣,得出總烴的校準(zhǔn)曲線方程為y=12,948.8244 x+742.7768;甲烷的校準(zhǔn)曲線方程為y=12,409.5958 x+416.4558;該方法操作簡單,分析速度快,實驗結(jié)果滿意.


HJ 604-2017 Ambient Air Determination of Total Hydrocarbons, Methane and Non-Methane Total Hydrocarbons Direct Injection-Gas Chromatography
HJ 604-2017 Ambient Air Determination of Total Hydrocarbons, Methane and Non-Methane Total Hydrocarbons Direct Injection-Gas Chromatography Details:

Name: Silanized Total Hydrocarbon Column

Material: Passivated stainless steel tube

Specifications: 0.6m*1/8

Model: HH-THC06

Application: HJ 604-2017 Ambient Air Determination of Total Hydrocarbons, Methane and Non-Methane Total Hydrocarbons Direct Injection-Gas Chromatography

HJ 604-2017 Ambient Air Determination of Total Hydrocarbons, Methane and Non-Methane Total Hydrocarbons Direct Injection-Gas Chromatography
1 Scope of application
      This standard specifies the direct injection-gas chromatography method for the determination of total hydrocarbons, methane and non-methane total hydrocarbons in ambient air.
      This standard applies to the determination of total hydrocarbons, methane and non-methane total hydrocarbons in ambient air, and also applies to the determination of total hydrocarbons, methane and non-methane total hydrocarbons in the air at monitoring points of fugitive emissions from pollution sources.

When the injection volume is 1.0ml, the detection limit of this standard for the determination of total hydrocarbons and methane is 0.06 mg/m3 (calculated as methane), and the lower limit of detection is 0.24 mg/m3 (calculated as methane); non-methane total hydrocarbons The detection limit is 0.07 mg/m3 (calculated by carbon), and the lower limit of determination is 0.28 mg/m3 (calculated by carbon).

2 Normative references
      This standard refers to the following documents or clauses thereof. For undated references, the valid edition applies to this standard.
      HJ 194 Technical Specification for Manual Monitoring of Ambient Air Quality
      HJ 664 Technical Specifications for Layout of Ambient Air Quality Monitoring Points (Trial)
      HJ 732 Sampling air bag method for volatile organic compounds in waste gas from stationary pollution sources
      HJ/T 55 Technical guidelines for monitoring fugitive emissions of air pollutants

3 Terms and Definitions

      The following terms and definitions apply to this standard.

3.1

      total hydrocarbons (THC)

Refers to the sum of gaseous organic compounds that respond on the hydrogen flame ionization detector of a gas chromatograph under the measurement conditions specified in this standard.

3.2

      nonmethane hydrocarbons (NMHC)

Refers to the sum of other gaseous organic compounds after deducting methane from the total hydrocarbons under the measurement conditions specified in this standard (unless otherwise stated, the results are in carbon terms).

4 Principles of the method

The gas sample was directly injected into a gas chromatograph with a hydrogen flame ionization detector, and the contents of total hydrocarbons and methane were measured on the total hydrocarbon column and the methane column, respectively, and the difference between the two was the content of non-methane total hydrocarbons.



Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. refers to "Determination of Total Hydrocarbons, Methane and Non-Methane Total Hydrocarbons in Ambient Air Direct Injection-Gas Chromatography" HJ604-2017 to determine total hydrocarbons, methane and non-methane total hydrocarbons. For the instrument The conditions are optimized, and the detection limit of total hydrocarbons is 0.007mg/m3, the detection limit of methane is 0.013mg/m3, the detection limit of non-methane total hydrocarbons is 0.015mg/m3, and the detection limit of the research is 0.453-7.21mg/m3 The calibration curve equation of total hydrocarbons is y=12,948.8244 x+742.7768; the calibration curve equation of methane is y=12,409.5958 x+416.4558; the method is simple to operate, fast to analyze, and the experimental results are satisfactory.