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SPECTROPHOTOMETRIC DETERMINATION OF BENZENE IN ETHANOL

A rapid, simple spectrophotometric method for the detection and determination of benzene in ethanol is described. Thus, using 1 cm cuvettes and applying the first and/or the second derivative methods, benzene can be determined in ethanol over the concentration range of 5–25 p.p.m. with a CV% less than 1 % and with a detection limit of 2 p.p.m. This is considered to be an improvement over the method currently given in the British Pharmacopoeia.