EFFECT OF BOILING AND REFLUXING ON THE EXTRACTION OF LEAD IN STREET DUST

Nwabenu Mary Okiremute

Department of Chemistry, Faculty of Science

University of Ibadan

E-mail: nwabenumary4@gmail.com

ABSTRACT

The lead concentration in street dust along Pako-Bariga road of Lagos was determined, The Wet oxidation method were used. The methods involved studying the effect of using different glasswares on the determination of lead. Also, the effect of using different types of acids and mixture of acids on the determination of lead at different length of time was studied. The result showed that the lead concentration in this area ranged from 312.5µg/g to 387.5g/g; the kjeldahl flask was better than all other methods tried and the effect of using different types of acid and mixtures of acid showed that aqua regia was the best mixture of acids to use for the extraction of lead from street dust. It was observed that the length of time for digestion of samples did not show any significant differences when longer lengths of time were used for digestion.