介绍
GB/T 15265-94 Specification for the determination of dust in environmental air-Gravimetric method
GB/T 15265-94 Specification for the Determination of Dust in Environmental Air — Gravimetric Method is a national standard for the determination of dust in air released by specified sources, produced by the China National Standardization Technical Committee and approved by the China National Standardization Administration on August 15, 1994. The standard comes into force on January 1, 1995. The standard specifies the sampling procedure and gravimetric determination methodology of dust in ambient air.
The GB/T 15265-94 Specification for the determination of dust in environmental air—Gravimetric Method consists of three parts. Part 1: Sampling includes sampling technology, sampling device, sampling duration, sampling sampling location and sampling sample taking and transfer. Part 2: Gravimetric determination includes sample preparation, dust extraction and gravimetric determination of dust concentration. Part 3: Quality assurance and quality control includes the evaluation of sample preparation, quality assurance and quality control for dust control.
The GB/T 15265-94 Specification for the determination of dust in environmental air–Gravimetric Method is applicable to the atmospheric particulate matter in the surrounding atmosphere of specified sources, such as stack effluents from coal burning electricity generators, refuse incinerators, coking plants, and exhausts from production processes and areas where fugitive dust is generated. Dust concentration measurement.
According to the above-mentioned methods and requirements, the air samples collected and transferred according to the relevant provisions of the GB/T 15265-94 Specification for the determination of dust in environmental air-Gravimetric Method are prepared and placed in the dust extraction unit. Then they are eluted with the eluent in the dust extraction unit, the eluent was heated and accelerated to separate the dust from the air sample and capture the dust to determine the concentration of the dust in the air sample.
The GB/T 15265-94 Specification for the determination of dust in environmental air-Gravimetric Method has the scientific basis, reasonable, objective and authoritative technical specifications, and various production sectors and environmental departments at all levels can refer to it for the monitoring and management of atmospheric dust. The implementation of this standard is conducive to the implementation of environmental control projects and the implementation of environmental objectives.
