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A novel microextraction technique based on membrane‐protected multiwalled carbon nanotubes coated with molecularly imprinted polymer (MWCNTs‐MIP) was developed. In this technique, MWCNTs‐MIP were packed inside a polypropylene membrane envelope, which was then clamped onto a paper clip. For extraction, the packed membrane envelope was first impregnated with toluene and then placed in sample solutions...
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