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How Dirty Are You? Part 3…Gloves…The Answers

17 Nov 2014

Let’s review…we soaked small pieces of different gloves in acetonitrile for 30 minutes. The samples were tested using GC-TOFMS. For relative intensity, a dashed line at the peak height of a 2 ppm PAH standard is drawn on the chromatograms.

Which gloves produced the worst background? GREEN GLOVES


gloves1

Bright green, yellow latex and royal blue gloves had similar background levels even though the chromatograms look different. Baby blue gloves and green gloves had higher background. Green gloves had the highest intensity background peaks. Let's look at the data...


bright green glove

yellow glove

royal blue glove

baby blue glove

green2

I have to admit that I was a bit surprised at the answer to the next question. Several people emailed me answers and UV stabilizers was the most popular choice. However, we saw several antioxidant compounds in the glove samples. A couple of compounds are shown below. Check out the signal from antioxidant "Nocrack NS 6" in the baby blue gloves!

Antioxidants are added to rubber to prevent oxidative damage that degrade the physical and mechanical properties of rubber materials.

q2 gloves

 


glove antiox 1

glove antiox 2