Lead is one of the most important heavy and toxic element that even in small amounts has a serious threat on human health and the environment [1]. It can accumulate in the brain, kidneys and nervous system, which may cause organic damage and dysfunction on central nervous systems [2]. Therefore, establishment of a rapid, selective, and simple method to the determination of lead at trace levels is very essential and important. Various methods have been reported for the determination of lead such as chemical precipitation, membran filtration,ion-exchange, biological, electrochemical and adsorption methods [3].And it shows great potential as an adsorbent for water refinement. On the other hand, the need for highspeed centrifugation or tedious filtration separation, which is necessary after adsorption, prevents the widespread use of such adsorbents [4]. Metal-organic frameworks (MOFs) are one of the ultimate substantial classes of porous materials which are very attractive for research fields due to their tunable structure, remarkable flexibility, porosity and functionality that provide an unrivaled opportunity for prevalent utilization in catalysis, adsorption, sensing as well as drug delivery[5].
