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Posts Tagged ‘hydrogen sulfide’

How a Laboratory Can Help You Identify Problem Chinese Drywall

Tuesday, April 6th, 2010

by Alyson Fortune, Air Quality Scientist; Michael Tuday, Director of R&D; Nicole Pannone, Air Service Specialist

Identify Problem Chinese Drywall

For the past four years, the U.S. Consumer Product Safety Commission (CPSC) has been receiving complaints from homeowners regarding corrosion and odors in their homes linked to imported drywall. The problem drywall, which was installed in homes between 2004 and 2007 and is commonly referred to as “Chinese drywall,” has resulted in more than 2,500 complaints to the CPSC. The complaints originated from homeowners primarily in the southeastern part of the United States, but have since been reported throughout the country.

Homeowners have linked their Chinese drywall to corrosion in their air conditioner coils, corrosion in copper wiring, and emission of foul odors. The odors have been described as smelling like rotten eggs, burnt matches, and other sulfurous smells.

Chinese Drywall Columbia Analytical has been studying this issue and testing both foreign and domestic drywall samples since February 2008. Laboratory tests have been developed to aid in the identification of defective drywall products. These tests may be used to verify visual home inspections and determine if corrosion effects are from drywall and not from other household items, such as carpets, cleaners, paints, or personal care products.

This article presents a chronology of how Columbia Analytical established their test methods for determining problem drywall and how each of the issues that arose was resolved with a laboratory solution.

See Chinese drywall lab tests and results…

Hydrogen Sulfide to be Reported for Toxic Release Inventory

Monday, March 29th, 2010

Hydrogen SulfideEPA has announced plans to require reporting for hydrogen sulfide (H2S) and is accepting public comments until April 27, 2010. Under the Toxic Release Inventory (TRI) requirements of the Emergency Planning and Community Right-to-Know Act (EPCRA), the EPA will require H2S reporting estimates of all on-site releases and off-site transfers for disposal by each facility that meets the manufacture thresholds for hydrogen sulfide. Manufacturing limits for H2S emissions are 25,000 pounds per year, process limits are 25,000 pounds per year, and “other” use is 10,000 pounds per year.

Read more about hydrogen sulfide…