A luminescent method for detection of parathion based on zinc incorporated metal-organic framework

A highly sensitive method for parathion detection based on a luminescent zinc incorporated metal-organic framework (Zn-MOF) is reported in this work. The Zn-MOF was synthesized under solvothermal conditions with tetrakis (4-carboxyphenyl) porphyrin (TCPP) and 1,2,4,5-tetrakis (4-carboxyphenyl) benzene (H4TCPB) providing the ligand. The as-prepared Zn-MOF emitted violet fluorescence under ultraviolet light. By quenching the fluorescence intensity, the Zn-MOF showed selective response to parathion among 15 kinds of organophosphates (OPPs), with minimum response concentration 1.950 mu g.L-1. The Zn-MOF based fluorescent method was used for parathion spiked irrigation water and a satisfactory recovery rate was obtained, indicating its potential for rapid analysis of environmental samples.