we used experimental animal data to derive a human acute reference dose of 1.33 g/ kg body weight, which corresponds to maximum concentration of TTX in shellï¬sh of 200 g/kg.
Where & Why Nickel is Used. Nickel-containing materials play a major role in our everyday lives â food preparation equipment, mobile phones, medical equipment, transport, buildings, power generation â the list is almost endless.
1 Nickel is still used in many parts of the world in coins. 2  The American nickel (worth 5 cents) is actually 75% copper and 25% nickel. 3  Nickel foam or nickel mesh is used in alkaline fuel cells as part of the gas diffusion electrodes. 4  Nickel is used in a process known as fire assay.