20%PEG-20M/GCS880 AW DMCS 固定污染源排气中乙醛的测定玻璃柱_毛细管柱

产品展示

您当前的位置：首页 » 产品展示 » 毛细管柱 » 20%PEG-20M/GCS880 AW DMCS 固定污染源排气中乙醛的测定玻璃柱

产品名称：	20%PEG-20M/GCS880 AW DMCS 固定污染源排气中乙醛的测定玻璃柱
产品型号：	20%PEG-20M/GCS880 AW DMCS
品牌：	1941
产品数量：
产品单价：	面议
日期:	2021-11-24

20%PEG-20M/GCS880 AW DMCS 固定污染源排气中乙醛的测定玻璃柱的详细资料

固定污染源排气中乙醛的测定玻璃柱
固定污染源排气中乙醛的测定玻璃柱 详细信息：

名称：填充玻璃柱
规格：2m*3mm（内径）
型号：20%PEG-20M/GCS880 AW DMCS（80-100目）
应用： HJ/T 35-1999 固定污染源排气中乙醛的测定气相色谱法

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乙醛测定。

1.2 当采样体积为100L，进样体积为1μL时，乙醛的检出限为4×10^-²mg/m³，乙醛的定量测定浓度范围为0.14mg/m³-30mg/m³。

2 方法原理

用亚硫酸氢钠溶液采样，乙醛与亚硫酸氢钠发生亲核加成反应，在中性溶液中生成稳定的a-羟基磺酸盐，然后在稀碱溶液中共热释放出乙醛，经色谱柱分离，用氢火焰离子化检测器测定，以标准样品色谱峰的保留时间定性，峰高定量。

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 161157-1996 固定污染源排气中颗粒物测定和气态污染物采样方法

固定污染源排气中乙醛的测定玻璃柱 测试谱图：

Determination of Acetaldehyde in Exhaust Gas of Fixed Pollution Source Glass Column
Glass column for the determination of acetaldehyde in exhaust gas from a fixed pollution source Details:

Name: Filled glass column
Specification: 2m*3mm (inner diameter)
Model: 20%PEG-20M/GCS880 AW DMCS (80-100 mesh)
Application: HJ/T 35-1999 Determination of Acetaldehyde in Exhaust Gas of Stationary Pollution Source Gas Chromatography

1 Scope of application

1.1 This standard is applicable to the determination of acetaldehyde from organized and unorganized emissions from stationary sources.

1.2 When the sampling volume is 100L and the injection volume is 1μL, the detection limit of acetaldehyde is 4×10-2mg/m3, and the quantitative measurement concentration range of acetaldehyde is 0.14mg/m3-30mg/m3.

2 Principle of the method

Sampling with sodium bisulfite solution, acetaldehyde and sodium bisulfite undergo a nucleophilic addition reaction to form a stable a-hydroxysulfonate in a neutral solution, and then co-thermally release acetaldehyde in a dilute alkali solution. The chromatographic column is separated and measured with a hydrogen flame ionization detector, qualitatively based on the retention time of the chromatographic peak of the standard sample, and the peak height is quantified.

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 161157-1996 Determination of particulate matter in exhaust gas from stationary sources and sampling method for gaseous pollutants

Determination of Acetaldehyde in Exhaust from Fixed Pollution Source Glass Column Test Spectra: