Porous glass absorption bottle (tube)/Glass sieve absorption bottle

This absorption bottle is called a porous glass plate absorption bottle (tube) or a glass sieve plate absorption bottle because it has a glass sand core sieve plate. After passing through the sieve plate of the absorption bottle (tube), the gas sample is dispersed into small bubbles with a long retention time, greatly increasing the gas-liquid contact area and thus improving the absorption effect. Porous sieve plate absorption tubes (bottles) are not only suitable for collecting gaseous and vapor substances, but also for collecting aerosol substances.

Performance requirements:

The pore size and thickness of porous glass plates should be uniform; When the tube is installed insideWhen pumping 5mL of water at a flow rate of 0.5L/min, the bubbles generated should be uniform and there should be no excessively large bubbles; The rising height of the bubble is 40-50mm, and the resistance is 4-5kPa. Refer to Figure 2.4

GB/T 17061-1997 Technical Specification for Workplace Air Sampling Instruments

Can be installedA porous glass plate absorption bottle containing 10mL, 25mL, or 50mL absorption solution, with a liquid column height of not less than 80mm. When sampling at a flow rate of 0.4L/min, the glass plate resistance should be between 4kPa and 5kPa, and the bubbles passing through the glass plate should be evenly dispersed.

built-inA large porous glass plate absorption bottle with 50mL absorption solution should have a glass plate resistance between 5kPa and 6kPa when sampled at a flow rate of 0.2L/min. The bubbles passing through the glass plate should be evenly dispersed. Figure 2.5 shows two types of porous glass absorption bottles that are more suitable. Use a brown absorption bottle or a black light shield on the outer cover of the absorption bottle during the sampling process. The new porous glass plate absorption bottle or the used porous glass plate absorption bottle should be soaked in (1+1) HCI for more than 24 hours and washed with clean water.

HJ 479-2009 Determination of nitrogen oxides in ambient air - Naphthalene ethylenediamine hydrochloride spectrophotometric method

The gas sample absorption device is a porous glass sieve plate absorption bottle (tube), and its structure is shown in the figureAs shown in 2.6. At the specified sampling flow rate, the resistance of the absorption bottle containing the absorption liquid should be (6.7 ± 0.7) kPa, and the bubbles on the glass plate of the absorption bottle should be evenly distributed.

HJ/T 194-2005 Technical Specification for Manual Monitoring of Environmental Air Quality

Refer to the national standard

GBZ/T 160.29-2004 Determination of Toxic Substances in Workplace Air Inorganic Nitrogen Compounds

1. U-shaped porous glass absorption tube

GBZ/T 160.30-2004 Determination of Toxic Substances in Workplace Air Inorganic Phosphorus Compounds

1. Ammonium molybdate spectrophotometric method for phosphine

U-shaped porous glass absorption tube

2. Phosphorus pentoxide or ammonium trichlorophosphate molybdate spectrophotometric method

U-shaped porous glass absorption tube

3. P-Aminodimethylphenylamine spectrophotometric method for phosphorus pentasulfide or trichlorfon

U-shaped porous glass absorption tube

4. Collection of yellow phosphorus absorption solution- Gas chromatography method

U-shaped porous glass absorption tube

GBZ/T 160.31-2004 Determination of Toxic Substances in Workplace Air - Arsenic and Its Compounds

1. Silver (arsine) diethylaminodithiocarbamate spectrophotometric method

U-shaped porous glass absorption tube

GBZ/T 160.33-2004 Determination of Toxic Substances in Workplace Air - Sulfides

1. Sulfur dioxide (potassium tetrachloride)- Pararosaniline hydrochloride spectrophotometric method)

U-shaped porous glass absorption tube

2. Ionic chromatography of sulfur trioxide and sulfuric acid

U-shaped porous glass absorption tube

3. Silver nitrate colorimetric method for hydrogen sulfide

U-shaped porous glass absorption tube

4. Mercury thiocyanate spectrophotometric method for sulfonyl chloride

U-shaped porous glass absorption tube

GBZ/T 160.34-2004 Determination of Toxic Substances in Workplace Air - Fluoride

1. Ionic chromatography of hydrogen fluoride

U-shaped porous glass absorption tube

GBZ/T 160.37-2004 Determination of Toxic Substances in Workplace Air Chloride

1. Mercury thiocyanate spectrophotometric method for hydrogen chloride and hydrochloric acid

U-shaped porous glass absorption tube

GBZ/T 160.45-2007 replaces GBZ/T 160.45-2004 for the determination of toxic substances in workplace air and halogenated hydrocarbons

1. Methyl iodideSodium 1,2-naphthoquinone-4-sulfonate spectrophotometric method

U-shaped porous glass absorption tube

GBZ/T 160.51-2007 replaces GBZ/T 160.51-2004 for the determination of toxic substances in workplace air and phenolic compounds

1. Sodium carbonate spectrophotometric method for resorcinol

U-shaped porous glass absorption tube

GBZ/T 160.54-2007 replaces GBZ/T160.54-2004 for the determination of toxic substances in workplace air, including aliphatic aldehydes

1. Aniline spectrophotometric method for furfural

U-shaped porous glass absorption tube

GBZ/T 160.59-2004 Determination of Toxic Substances in Workplace Air - Carboxylic Compounds

1. Ionic Chromatography of Oxalic Acid

U-shaped porous glass absorption tube

GBZ/T 160.60-2004 Determination of Toxic Substances in Workplace Air - Anhydride Compounds

1. High performance liquid chromatography method for maleic anhydride

U-shaped porous glass absorption tube

GBZ/T 160.61-2004 Determination of Toxic Substances in Workplace Air - Acyl Halide Compounds

1. UV spectrophotometry of phosgene

U-shaped porous glass absorption tube

GBZ/T 160.62-2004 Determination of Toxic Substances in Workplace Air - Amide Compounds

1. Collection of solutions of dimethylformamide and dimethylformamide- Gas chromatography method

U-shaped porous glass absorption tube

GBZ/T 160.73-2004 Determination of Toxic Substances in Workplace Air - Nitroalkanes

1. Chloropicrin hydrochloride naphthylethylenediamine spectrophotometric method

U-shaped porous glass absorption tube

GBZ/T 160.74-2004 Determination of Toxic Substances in Workplace Air - Aromatic Nitro Compounds

1. Naphthalene ethylenediamine hydrochloride spectrophotometric method for nitrobenzene, mononitrochlorobenzene, dinitrochlorobenzene, and dinitrotoluene

U-shaped porous glass absorption tube

GBZ/T 160.76-2004 Determination of Toxic Substances in Workplace Air - Organophosphorus Pesticides

1. Dinitrophenylhydrazine spectrophotometric method for dichlorvos

U-shaped porous glass absorption tube

2. Enzyme chemistry of phosphoramine, internally absorbed phosphate, methyl internally absorbed phosphate, or malathion

U-shaped porous glass absorption tube

GBZ/T 160.27-2004 Determination of Toxic Substances in Workplace Air - Boron and Its Compounds

1. Phenylacetic acid spectrophotometric method for boron trifluoride

U-shaped porous glass absorption tube

HJ/T 27-1999 Determination of Hydrogen Chloride in Exhaust Gas from Fixed Pollution Sources - Mercury thiocyanate spectrophotometric method

Porous glass plate absorption tube absorption bottle,50mL

Porous glass plate absorption tube absorption bottle,10mL

HJ/T 29-1999 Determination of Chromic Acid Mist in Exhaust from Fixed Pollution Sources - Diphenylcarbazide spectrophotometric method

U-shaped porous glass absorption tube, 25mL

HJ 479-2009 Determination of nitrogen oxides in ambient air - Naphthalene ethylenediamine hydrochloride spectrophotometric method

Can be installedA porous glass plate absorption bottle with a liquid column height of not less than 80mm for 10mL, 25mL, or 50mL absorption solution.

HJ 482-2009 replaces GB/T 15262-94 Determination of Sulfur Dioxide in Environmental Air Formaldehyde Absorption Pararosaniline spectrophotometric method

Porous glass absorption tube:10mL porous glass absorption tube for short-term sampling;

50mL porous glass absorption tube for 24-hour continuous sampling.

HJ 547-2009 Determination of Chlorine Gas in Waste Gas from Fixed Pollution Sources - Iodometric Method (Provisional)

Porous glass absorption bottle:125mL

HJ 548-2016 replaces HJ 548-2009 for the determination of hydrogen chloride in fixed source exhaust gas. Silver nitrate volumetric method

Porous glass absorption bottle:75mL。

HJ 688-2013 Determination of Hydrogen Fluoride in Waste Gas from Fixed Pollution Sources by Ion Chromatography (Provisional)

Absorption bottle: made of borosilicate glass or quartz glass material50mL small porous glass absorption bottle.

GB/T 16157-1996 Determination of particulate matter and sampling methods for gaseous pollutants in exhaust gas from fixed pollution sources

Porous sieve plate absorption bottle, with even bubbling, at a flow rate ofAt 0.5L/min, the resistance should be 5 ± 0.7kPa.

HJ 801-2016 Determination of Amide Compounds in Environmental Air and Waste Gas by Liquid Chromatography

Brown porous glass absorption bottle: compliantRequirements of HJ/T 194.

Brown porous glass absorption bottle: compliantRequirements of GB/T 16157.

HJ/T 43-1999 Determination of Nitrogen and Oxygen Compounds in Exhaust from Fixed Pollution Sources - Naphthalene Ethylenediamine Hydrochloride spectrophotometric method

Porous glass absorption bottle:125mL。