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What does HAC stand for?

HAC stands for highest admissible concentrations


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Further, the toxicity of lead is known to decline with increasing calcium and magnesium concentrations in water. The acute toxic and lethal concentrations in different types of water range between 1 and 10 mg per litre for salmonids and between 10 and 100 mg per litre for cyprinids. Acute lead intoxication is characterized, first of all, by damage to the gill epithelium: the affected fish are killed by suffocation. The characteristic symptoms of chronic lead intoxication include changes in the blood picture, with severe damage to the erythrocytes and leucocytes, degenerative alterations of the parenchymatous organs and damage to the nervous system. The highest admissible lead concentration.