New method finds 57 pesticides in poisoned honey bees - Medical News Today

"The researchers, led by Tomasz Kiljanek of the Department of Pharmacology and Toxicology, report how they developed and validated a method for simultaneously detecting up to 200 pesticides and metabolites in honey bees."

Multi-residue method for the determination of pesticides and pesticide metabolites in honeybees by liquid and gas chromatography coupled with tandem mass spectrometry-Honeybee poisoning incidents. Kiljanek et al, 2016