[EDXRF analysis of soil heavy metals on lead-zinc orefield]

Due to the impact of lead-zinc mining and smelting, the soil of lead-zinc orefield and nearby areas has been widely polluted. Moreover, the concentration of lead and zinc was high, and their concentration range was wide. Furthermore, the impact of overlapping interference between low concentration As and high Pb was serious, and the lack of soil standards of lead and zinc was also a problem. According to these problems, the present work studied an effective solution to setting up the EDXRF analysis of Pb, As, Cd, Cu and Zn of soil on lead-zinc orefield. The measurable concentration of Pb was 4.4-23 600 microg x g(-1), and that of Zn was 7.0-39 400 microg x g(-1). The detection limit was 1.1 microg x g(-1) for Pb and 0.9 microg x g(-1) for Zn. The average relative-error was 7.6% for Pb and 6.2% for Zn.