1 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jia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jia醇(CH₃OH）的试样通过装有固定相的色谱柱，流出色谱柱的甲chun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。

3 引用标准

      下列标准所包含的条文，通过在本标准中引用而构成为本标准的条文。

      GB 16297-1996 大气污染物综合排放标准

      GB 16157-1996 固定污染源排气中颗粒物测定和气态污染物采样方法

4 试剂和材料

4.1 色谱固定液：5%聚乙二醇(Carbowax 20M)。

4.2 载体：石墨碳黑(Carbopack B) 80~120目。

4.3 载气：体积分数为高纯氮99.99％。

4.4 燃烧气：体积分数为纯氢99.9%。

4.5 助燃气：空气。

4.6 无碱玻璃棉。

名称：填充柱

固定液：5% 聚乙二醇（Carbowax20M）

载体：石墨化碳黑（Carbopack B）80-120目

规格：2m*3mm

材质：不锈钢（玻璃）
应用：HJ/T 33-1999 固定污染源排气中甲chun的测定 气相色谱法

1 Scope of application

1.1 This standard is applicable to the determination of organic and unorganized emissions from fixed pollution sources.

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

2 Principles of the method

      The carrier gas carries a sample containing jia alcohol (CH3OH) through a chromatographic column equipped with a stationary phase, and the methanol flowing out of the chromatographic column is measured by a hydrogen flame ionization detector (FID). Qualitatively based on the retention time of the chromatographic peak of the standard sample, and quantitatively based on the peak height (or peak area).

3 Reference standards

      The provisions contained in the following standards constitute the provisions of this standard through quotation in this standard.

      GB 16297-1996 Comprehensive Emission Standard of Air Pollutants

      GB 16157-1996 Determination of particulate matter in exhaust gas from stationary sources and sampling method for gaseous pollutants

4 Reagents and materials

4.1 Chromatographic stationary liquid: 5% polyethylene glycol (Carbowax 20M).

4.2 Carrier: Graphite carbon black (Carbopack B) 80~120 mesh.

4.3 Carrier gas: the volume fraction is 99.99% of high purity nitrogen.

4.4 Combustion gas: the volume fraction of pure hydrogen is 99.9%.

4.5 Combustion gas: air.

4.6 Alkali-free glass wool.

Name: Packed column

Fixative: 5% polyethylene glycol (Carbowax20M)

Carrier: Graphitized carbon black (Carbopack B) 80-120 mesh

Specification: 2m*3mm

Material: stainless steel (glass)

Application: HJ/T 33-1999 Determination of Achun in Exhaust Gas from Stationary Pollution Sources Gas Chromatography