Title: Rapid Determination of Lead in Urine by Ion Exchange
Abstract: Abstract For routine screening of employees in the lead industry, a method for determination of urinary lead was developed in which this element is removed from urine by means of a chelating agent, eluted, and determined by a modified dithizone method. The method gives values which are about 5% below those obtained by the wet ashing technic, with a precision of ± 2.1% in the range of 2-15 µg. of lead per 50 ml. urine sample. The advantages of the method are that it requires only about 1 hr. to carry out, is convenient, and avoids the time-consuming and potentially hazardous wet ashing step.