CAJ | 학술논문

　　对贵阳市镉异常区土壤镉的化学形态进行分析和研究，结合农作物、水体污染现状和地方病调查，评价贵阳市土壤高背景值镉对周围环境及人体健康的影响。研究结果表明：贵阳市土壤镉的赋存形态以离子交换态、铁锰氧化物结合态、残渣态为主，弱有机结合态和碳酸盐结合态次之，强有机结合态较低，水溶态镉最低；垂向剖面上，土壤镉含量随土壤深度的增加而降低，镉在土壤表层更为富集，深层土壤中镉的形态分布与表层土壤类似；土壤异常区的水体未受到镉的污染，但稻谷、辣椒、烟草等农作物已出现镉超标现象，且部分地区出现了因镉引起的地方病症状。贵阳市土壤镉背景值高，且镉的生物有效性较强，已对农作物、人畜健康造成了一定危害，潜在威胁较大。
　　대귀양시력이상구토양력적화학형태진행분석화연구，결합농작물、수체오염현상화지방병조사，평개귀양시토양고배경치력대주위배경급인체건강적영향。연구결과표명：귀양시토양력적부존형태이리자교환태、철맹양화물결합태、잔사태위주，약유궤결합태화탄산염결합태차지，강유궤결합태교저，수용태력최저；수향부면상，토양력함량수토양심도적증가이강저，력재토양표층경위부집，심층토양중력적형태분포여표층토양유사；토양이상구적수체미수도력적오염，단도곡、랄초、연초등농작물이출현력초표현상，차부분지구출현료인력인기적지방병증상。귀양시토양력배경치고，차력적생물유효성교강，이대농작물、인축건강조성료일정위해，잠재위협교대。
Inordertoevaluateenvironmentaleffectsofthechemicalspeciationofcadmium,theauthorsstudiedsoilswithhighcontent ofcadmiuminGuiyang,andinvestigatedthecrop,waterpollutionandendermicdiseases.Someconclusionshavebeenreached:Cad-miumisexistentmainlyinexchangeablefraction,residualphase,andFe-Mnoxidephase,subordinatelyinweakorganiccombinational stateandcarbonatephase,andverylowlyinwatersolublephase.Inverticalprofileofsoil,cadmiumcontentdecreaseswithincreasing soildepth,cadmiumismoreconcentratedinsurfacesoil,andthedistributionofchemicalspeciationofcadmiumindeepsoilissimilar tothatofsurfacesoil.Thewaterhasnotbeenpollutedbycadmiuminabnormalareas,andcadmiuminsuchcropsasrice,pepperand tobaccohasexceedthestatestandard.Inaddition,localdiseasesymptomsinducedbycadmiumhasappearedinsomeareas.There-fore,thecropsandhumanhealthareadverselyaffectedbythehighsoilbackgroundvaluesofcadmiuminGuiyang,andthepotential threatisserious.