Threshold limit values indicate the point at which health is impaired by chemicals. They are indispensable in occupational medicine for evaluating the risk of working materials. Biological Tolerance Values (BAT Values) give the threshold limits for hazardous occupational toxicants in body fluids. They are predominantly used in Europe. This volume provides the scientific reasons why 12 important BAT Values were established at a particular level. The documentations include pharmacokinetics, critical toxicity, exposure and effect, selection of the indicators, methodology, background exposure, interpretation of the data. Further 10 evaluations for carcinogenic substances are given (e.g. arsenic trioxide, ethylene oxide, hydrazine, nickel and vinyl chlorides). For the first time, monitoring by measuring haemoglobin adducts is described.
