A new method for the determination of arsenic,lead,iron and mercury in sulfuric acid was proposed.Inductively coupled plasma emission spectrometer was used to determine arsenic,lead,iron and mercury in industrial sulfuric acid,and the condition test,precision test,standard recovery test and method comparison were done.The method was fast and convenient,accurate and reliable.The relative standard deviation is 4.9 × 10-5％～5.3 × 10-5％,the recovery rate is 97.33％～102.38％,and the determination range is 0.000 1％～0.009 0％.
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