GB/T 37505-2019 in English

GB/T 37505—2019: In-depth interpretation of the standard for determination of quinoline content in surfactant dispersants

I. Background and significance of standard formulation

GB/T 37505—2019 "Determination of quinoline content in surfactant dispersants" is an important standard in China's chemical industry, mainly used for the detection of quinoline content in dispersants produced from coal chemical raw materials. This standard fills the gap in the domestic detection method of trace quinoline in dispersants and provides a scientific basis for product quality control.

II. Core determination principle and technical route

III. Key technical points for the implementation of the standard

Requirements for reagents:The chemical reagents used in the test must comply with national standards, and the test water must meet the third-grade water specifications in GB/T 6682.

Instrument configuration:Equipped with a gas chromatograph (GC-FID) or a gas chromatograph-mass spectrometer (GC-MS), and meet the corresponding technical index requirements.

Sample pretreatment:Weigh 0.5 g of sample, dissolve it in water, add ethyl acetate to extract quinoline, and centrifuge to separate the organic phase for analysis.

IV. Scope and limitations of the standard

Scope of application:Applicable to the determination of quinoline content in various surfactant-type dispersants produced from coal chemical raw materials.

Limitations:This standard is mainly aimed at the coal chemical industry, and the pretreatment conditions may need to be adjusted for other types of dispersants.

V. Implementation recommendations and precautions