An Improved Apparatus for Determining Microgram Amounts of Arsenic by the Gutzeit Method Using Computer-Assisted Data Processing

摘要

An improved version of the determination of arsenic traces by the Gutzeit method was proposed. The determination error was decreased by changing the design of the apparatus and using a computer with a scanner for processing the experimental data. Arsenic in model solutions containing from 0.05 to 0.6 μg As per a sample volume of 2 mL can be determined with a relative standard deviation of no higher than 10%. The detection limit is. 0.01 mg/L (1 * 10~(-7) M, which is equal to 0.3 MPC in water).