Abstract
The rapid polarographic determination of lead in brass and bronze was carried out as follows: After the sample was dissolved in aqua regia, the solution was boiled with excess sodium hydroxide solution and diluted to a definite volume. Then, lead in the supernatant solution was determined polarographically. If the solution was filtered, lead was partially absorbed on the filter paper, and the result was not well reproducible, so the sample and the calibration solutions should be taken from the supernatant solution. The presence of iron, aluminium and manganese over about 0.5% caused interferences.
