Reducing release of microplastics

Microplastics, which are plastic particles measuring less than 5 millimeters in diameter, are everywhere.  They are found in air; water in lakes, streams and oceans; soil; fish; animals; and humans.  Scientists are also studying nanoplastics, which are even smaller particles less than one micrometer in diameter.  These microplastics have a variety of sources, including our clothing and food packaging.  Here are some thoughts about how to reduce the amount of micro and nanoplastic reaching the environment. 

• One study says that heat probably plays the most crucial role in generating the microplastic particles.  Drinking hot liquids from plastic cups releases microplastics into your drink.  Older plastic tends to release more microparticles when heated.  Washing and drying polyester clothing on high heat releases more small bits of the fabric into the air and water than washing in cold water and drying on low heat.  Heating plastic jars and tubs in the microwave releases nanoplastics. 
• A microplastics researcher provided several ideas in an article that is behind a paywall.  I’ll summarize it for you.  The researcher started by saying that you can start slowly and implement one idea at a time and that reducing use of single-use plastics is important.  1) avoid packaged and ultra-processed foods, 2) don’t microwave plastic or use plastic water bottles, 3) use fragrance-free personal care and cleaning products, because some companies put fragrances in tiny microplastic capsules so the scent will last longer, and 4) check the ingredients for abrasive cleaning and personal care products, because these may have microplastic particles. 
• When possible, air-dry synthetic fabric clothing.  The mechanical action of the dryer, combined with the heat, will degrade the fabric faster. 
• When you buy clothing and other fabric items, look at how sturdy the fabric is.  Polyester sweaters are nice and fluffy but lose a lot of fibers (into the air and water) every time they are washed.