Analytical procedures for pesticides were largely still in the "bucket chemistry" era and the methods were provided by either the chemical company or the "Official Methods" of the Association of Agricultural Chemists".
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Bees and toxic chemicals — Bees can suffer serious effects from toxic chemicals in their environment. This includes various synthetic chemicals, such as insecticides and fertilizers, as well as a variety of naturally occurring chemicals from plants, such as ethanol… … Wikipedia
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