Method for calculating environmental quality reference of heavy metals in lake and reservoir sediments

The invention discloses a lake and reservoir sediment heavy metal environment quality reference calculation method which comprises the following steps: collecting in-situ sediment of a selected reservoir sampling point to obtain a sediment sample, and taking in-situ water as overlying water; measuring the heavy metal concentration in the pore water of the surface sample of the sediment sample; measuring the total amount of heavy metals in the sediment of the surface sample of the sediment sample; determining the occurrence form of the heavy metal on the surface layer of the sediment sample by adopting a BCR three-step extraction method; based on the pore water heavy metal concentration, the sediment heavy metal total amount and the heavy metal occurrence form, the sediment environment quality standard is calculated. The method comprises the following steps: measuring the pore water heavy metal concentration of a sediment sample, the total heavy metal amount of the sediment and the heavy metal occurrence form