BCFBio-concentration factor[CL,R]Heavy metals concentration in the leaf or rootTFTranslocation factorCLMetal concentration in the leafCRMetal concentration in the root[CS]Concentration of heavy metals in the sediment samples around the tree trunkIgeoGeo-accumulation indexCnConcentration of metals in the sampleBnConcentration of metals in the fieldEFEnrichment factorMxConcentration of metals in the sampleAlbStandard aluminum concentration in the shaleMbStandard concentration of the metals in the shaleAlxConcentration of aluminum in the sampleCFContamination factorMxConcentration of heavy metals in the sampleMbConcentration of the metals in the fieldCdDegree of contaminationmCdModified degree of contaminationCdContamination indexPLIPollution load indexCSIContamination severity indexMERMQMean effects range median quotientsERMiEffects range-median of each elementCDIDermal-waterChronic daily exposure by skin absorptionHQHazard quotientsRfDOral reference doseNNumber of heavy metals