The ADI should be divided by 1000 if it is considered that petroleum residues amplify the toxicity by 1000. The PAHs with 2–3 cycles are more represented in pesticides than those with 4–6 cycles, which underlines that the petroleum residues appear to come mainly from crude unburned material. The declared active component is taken alone for toxicity calculations, such as the acceptable daily intake (ADI). Petroleum residues appear to be a waste product. The levels and distribution of PAHs per pesticide were different. The ratio of the PAHs to the threshold of toxicity was from 2.16 to 8288 times. The measured compounds were the 16-priority polycyclic aromatic hydrocarbons (PAHs). Gas chromatography and mass spectrometry (GC-MS) were applied for 24 pesticides. We demonstrate that petroleum has always been and is still always in pesticides. For each declared active ingredient, there are dozens or hundreds of formulations. Toxicological investigations of pesticides largely focus on the declared active ingredient, which constitutes only between a few percent to around 50% of the total formulation.
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