BS ISO 21741:2020 - Stationary Source Emissions

Discover the essential standard for environmental protection and industrial compliance with the BS ISO 21741:2020. This comprehensive document provides detailed guidelines for the sampling and determination of mercury compounds in flue gas using the gold amalgamation trap method. Released on November 20, 2020, this standard is a critical resource for industries aiming to monitor and control mercury emissions effectively.

Overview

The BS ISO 21741:2020 standard is a pivotal document for industries that are committed to reducing their environmental impact. It outlines a precise methodology for the sampling and analysis of mercury compounds in flue gases, which are a significant concern due to their toxic nature and potential to harm both human health and the environment. By adhering to this standard, industries can ensure they are compliant with environmental regulations and contribute to global efforts in reducing mercury pollution.

Key Features

• Standard Number: BS ISO 21741:2020
• Pages: 44
• Release Date: November 20, 2020
• ISBN: 978 0 580 95912 7
• Status: Standard

Why Choose BS ISO 21741:2020?

The importance of monitoring mercury emissions cannot be overstated. Mercury is a potent neurotoxin that can have severe effects on human health, particularly in vulnerable populations such as pregnant women and young children. The BS ISO 21741:2020 standard provides a scientifically validated method for accurately measuring mercury emissions, ensuring that industries can take informed steps to mitigate their environmental impact.

Gold Amalgamation Trap Method

The gold amalgamation trap method is a highly effective technique for capturing mercury compounds from flue gases. This method involves the use of a gold-coated trap that selectively absorbs mercury, allowing for precise quantification. The BS ISO 21741:2020 standard provides detailed instructions on how to implement this method, ensuring reliable and repeatable results.

Benefits of Compliance

Compliance with the BS ISO 21741:2020 standard offers numerous benefits, including:

• Regulatory Compliance: Meet national and international environmental regulations regarding mercury emissions.
• Environmental Responsibility: Demonstrate a commitment to reducing environmental impact and protecting public health.
• Reputation Management: Enhance your organization's reputation by adhering to recognized environmental standards.
• Operational Efficiency: Implement a standardized approach to emissions monitoring, improving operational efficiency and accuracy.

Who Should Use This Standard?

The BS ISO 21741:2020 standard is essential for a wide range of industries, including:

• Power generation facilities
• Cement production plants
• Waste incineration plants
• Metal smelting and refining operations
• Any industry involved in processes that emit mercury compounds

Conclusion

In an era where environmental responsibility is paramount, the BS ISO 21741:2020 standard serves as a crucial tool for industries aiming to monitor and control mercury emissions. By implementing the guidelines outlined in this standard, organizations can ensure they are not only compliant with regulations but also contributing to a healthier planet. With its detailed methodology and focus on accuracy, this standard is an invaluable resource for any industry committed to environmental stewardship.

Invest in the BS ISO 21741:2020 standard today and take a significant step towards sustainable and responsible industrial practices.

BS ISO 21741:2020

This standard BS ISO 21741:2020 Stationary source emissions. Sampling and determination of mercury compounds in flue gas using gold amalgamation trap is classified in these ICS categories:

• 13.040.40 Stationary source emissions

This document describes a method for the sampling and measurement of mercury of both vapour and solid phases on stationary source flue gas streams. Mercury generally exists as elemental (Hg⁰) and oxidized (Hg²⁺) forms, both in the vapour and solid phases in flue gases. The vapour-phase (gaseous) mercury is captured either isokinetically or non-isokinetically with a gold amalgamation trap after removing solid-phase (particulate) mercury with a filter. Because gold amalgamation trap captures only gaseous elemental mercury, the oxidized mercury (Hg²⁺) in the vapour phase is converted to elemental mercury (Hg⁰) prior to the gold amalgamation trap. The concentration of gaseous mercury is determined using atomic absorption spectrometry (AAS) or atomic fluorescence spectrometry (AFS) after releasing mercury by heating the gold amalgamation trap. Separately, particulate mercury is collected isokinetically on a filter and the concentration is determined using cold vapour AAS or cold vapour AFS after dissolving the particulate mercury into solution.

The total concentration of mercury in flue gas is expressed as the sum of both gaseous and particulate mercury concentrations.

The gold amalgamation method is intended for short-term (periodic) measurements of gaseous mercury ranging from 0,01 ?g/m³ to 100 ?g/m³ with sampling volumes from 0,005 m³ to 0,1 m³ and sample gas flow rate between 0,2 l/min to 1 l/min. The measurement range of particulate mercury is typically from 0,01 ?g/m³ to 100 ?g/m³ with sampling volume from 0,05 m³ to 1 m³.