Teledyne Leeman Labs Blog

Soil and dust in homes often become the primary resting places for environmental toxins such as metals and metalloids that come from vehicle traffic and a variety of industrial sources. Residents within urban settings have a higher rate of exposure to contaminated dust from inhalation, ingestion and dermal contact. As a result, dust ingestion is often regarded as the primary source of low-dose mercury in urban children who spend much of their time indoors.

Since the 1970s, scientists have analyzed lake sediment and ice cores to understand the levels of historical atmospheric mercury emissions from metal production and industrial activity. Much of the published ice core mercury record has come from a glacier in Wyoming.  While the record has been cited extensively in scientific literature, many modern day scientist argue that it does not truly represent the global trends in atmospheric mercury levels.

The Animas River is a 125-mile river in the western United States that feeds the Colorado River. On August 5, 2015, a crew from the U.S. Environmental Protection Agency (EPA) was pumping out water from the abandoned Gold King Mine in Southern Colorado when heavy equipment used by the workers caused a leak.  

Steel is critical to our modern world, with companies producing more than 1.6 billion tons every year[i]. When it comes to high-carbon steel, the higher the carbon content, the harder and stronger the steel is.  As carbon is reduced, the iron becomes more flexible and easier to form. Carbon steel makes up more than 85% of the steel produced in the United States, and while other alloys can be used to change steel properties, such as Manganese and Vanadium, carbon is the most cost-effective alloying material for iron.

Recent accidents in industrial laboratories across the country have raised questions about lab safety programs, and whether enough is being done to instill stronger safety cultures. In particular, there are major concerns in these cultures in nonindustrial settings where serious incidents have taken place.

Leaders from the chemical industry published a letter in Chemical & Engineering News expressing their concerns with the “wide gulf in safety cultures,”[i] stating, ““The facts are unequivocal. Occupational Safety & Health Administration statistics demonstrate that researchers are 11 times more likely to get hurt in an academic lab than in an industrial lab. There have been serious accidents in academic labs in recent years—including fatalities—that could have been prevented with the proper use of protective equipment and safer laboratory procedures.”[ii]

If you’ve never heard of lichen, you’re probably not alone. Lichen is a combination of two organisms,” and “Most of lichen is composed of fungal filaments, but living among the filaments are algal cells, usually from green algae or cyanobacterium.”[i] According to experts, there are more than 1,250 species of lichens in North America. In fact, a scientist from the University of Colorado Boulder discovered two new species in June 2015 while doing research in Boulder.

One of the main reasons that anyone should care about lichens is their ability to absorb trace elements from the environment. Because they are spread out around the world, their ability to absorb elements such as mercury provides a potential model for mercury contamination in a micro-ecosystem modeling system. Lichens are dependent on the atmosphere for their nutrients, making them susceptible to airborne and waterborne pollutants.

In 2012, the Environmental Protection Agency adopted new emissions standards that were directed at cutting power plant emisions of mercury and other toxic air pollutants. On June 29, 2015, the U.S. Supreme Court rejected the rules with a vote of 5-4 citing the costs of the regulations to power plant operators. The EPA estimated the rules would force companies to spend $9.6 billion a year on compliance while saving Americans between $37 billion and $90 billion a year from premature death and reduced health complications. The decision reverses a D.C. Circuit Court of Appeals decision that called mercury emissions a “threat to the public and the environment.”

Mercury is a common element found in the lab, particularly in thermometers, barometers, manometers and sphygmomanometers. Given the danger of mercury, many of these instruments are being phased out in place of more environmental- and health-friendly options. As far back as 1991, the Environmental Protection Agency regulated mercury out of latex paint, and in other industries such as pharmaceutical and agricultural, it is being used less and less.

There are three forms of mercury inorganic, organic and elemental mercury, which is most common in the lab. Each is toxic, but organic mercury, which forms in nature, contaminates fish and pollutes waters. Elemental mercury is a silvery and odorless liquid at room temperature, and is the most common source of occupational exposure. The vapors from a spill can “affects the central nervous system (CNS), producing tremors, mood changes and reduced cognitive, sensory, and motor nerve functions. The kidneys are also affected, with renal failure at extremely high doses.”[i]

There is little doubt we are in the midst of the social media revolution. Question is, do researchers recognize it?

Researchers have a reputation for being the quiet, studious type. They avoid media attention, and therefore, would shun social media tools such as Facebook, Instagram, SnapChat or Twitter. A November 2014 article in Lab Manager addressed the social media revolution and social media’s role in the scientific community in the following way:

“Revolutions rearrange the established order. On one side are the disrupters, agents of change who champion social media. The diehards have a different drift—many of the old lions and scientists in positions of power are defenders of the status quo. Betwixt and between are the majority of scientists, who are of different minds about social media.

“Digital tumult rattles science in its entirety. Researchers certainly hear the roar.”[i]

Drive along I-65 in northern Indiana, and they’re hard to miss. Look as far west and east as you can and there appear to be hundreds of windmills or wind turbines speckling the countryside. These 300-foot giants have three blades, each measuring 120+ feet long and weighing seven tons. The windmills have changed the landscape along the quiet stretch of highway between Indianapolis and Chicago, and some estimate that they produce enough energy to power a city of 250,000 people.   

The average wind turbine is expected to operate 20 years or more, and considering the costs, owners will do whatever it takes to prolong the life. Replacing a gearbox can cost a company more than $500,000 between equipment, labor and lost revenues.  Mechanical breakdown is the most common risk for mechanical damage to the windmill, accounting for nearly 60% of claims. A study by Indian-firm Cholamandalam MS Risk Services found that 15% of total breakdown damage costs are a result of damage to the gear box.