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Antimicrobial Soaps and Handwash Toxic for Human and Environmental Health
A study has indicated that a pair of antimicrobial compounds known as triclosan and triclocarban, which are found in an array of personal care products like antimicrobial soaps, are neither safe for human health and the environment nor they work.
Associate professor Rolf Halden, of the Biodesign Institute at Arizona State University, is interested in chemicals produced in high volume for consumer use.
Levels of triclosan in humans have increased by an average of 50 percent since 2004, according to newly updated data from the Centers for Disease Control and Prevention (CDC).
The disturbing results of their research indicate that triclosan and triclocarban first aggregate in wastewater sludge and are transferred to soils and natural water environments, where they were observed to persist for months or years.
The chemistry behind these compounds, which contain benzene ring structures that have been chlorinated, make them notoriously difficult to break down. Further, they are averse to water or hydrophobic, tending to stick to particles, which decreases their availability for breakdown processes and facilitates long-range transport in water and air. A recent study demonstrated the accumulation of triclosan in dolphins from contaminated coastal waters.
Halden speculated that these chemicals might in fact persist in the solid byproduct left over after treatment-the sewage sludge.
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