In 2020, researchers found that gloves used in labs introduced a chemical called stearate into samples, which interfered with the detection of microplastics in scientific studies.
Mechanism
Synthesis from 2 studies
Gloves used in labs can shed tiny fatty particles that look and behave exactly like plastic pollution under the machines scientists use to detect it. This tricks the machines into thinking there’s plastic in the sample when it’s really just glove debris, leading to false results.
Most probable mechanism
When people wear latex or nitrile gloves in a lab, tiny bits of a fatty chemical called stearate can flake off the gloves. These bits are small, shiny, and have a chemical signature that looks just like plastic pollution when scientists use special machines to detect microplastics. Because of this, the machines think they’re seeing plastic in the sample when they’re really just seeing glove debris.
Stearate, a fatty acid derivative present in glove manufacturing materials, is physically dislodged from glove surfaces during handling and contact with samples.
The dislodged stearate particles are small enough to be mistaken for microplastics under optical and spectroscopic imaging systems due to similar size, shape, and infrared absorption profiles.
These stearate particles are incorrectly classified as synthetic polymers during routine microplastic detection protocols, leading to false-positive identification of environmental contamination.
Evidence from Studies
Supporting (2)
Community contributions welcome
When Good Intentions Go Bad - False Positive Microplastic Detection Caused by Disposable Gloves.
Avoiding and reducing microplastic false positives from dry glove contact
Contradicting (0)
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