济宁市环北湖湾地表水重金属含量测定

Study on the determination of heavy metals in surface water of the district of North Lake,Jining

目的检测济宁市环北湖湾生态新区地表水中重金属含量,并完善其检测方法。方法采得水样经前处理后,采用原子吸收光谱法测定重金属离子含量。结果北湖区26个采样点地表水中铁、锰、铜、锌、钙、镁、铅、镉的浓度范围分别为0.110～1.497mg/L;0～0.884mg/L;0～0.080mg/L;0mg/L;163.909～269.816mg/L;6.892～11.851mg/L;0～3.112mg/L;4.123～5.784ng/ml。其中,铁超标率为65.385%;锰为23.077%;铜、锌均未超标;铅、镉分别为53.846%,76.923%。结论济宁市环北湖湾地表水中铁、铅、镉污染较为严重。

Objective To study on the determination of heavy metals in surface water of the district of North Lake in Jining,and improve the determination methods.Methods The concentrations of heavy metals were determined by AAS.Results The concentrations of the heavy metals in surface water of the district of North Lake in Jining ranged from 0.110~1.497mg/L for Fe,0~0.884mg/L for Mn,0~0.080mg/L for Cu,0mg/L for Zn,163.909~269.816mg/L for Ca,6.892~11.851mg/L for Mg,0~3.112mg/L for Pb,4.123~5.784ng/ml for Cd respectively,and the corresponding rates of exceed standard were 65.385%,23.077%,0%,0%,100%,53.846%,76.923%.Conclusion The pollution of iron,cadmium and lead was serious in surface water of the district of North Lake in Jining.