印度Sukinda铬铁矿区水样的重金属污染、理化性质和微生物的评价

EI．SEⅥERPressAvailableonlineat、^n^，vv_sciencedirect．com∞一≯毋雄静茎矿ScienceDirectTrans．NonferrousMet．Soc．China23(2013)484—493Heavymetalcontamination，watersamplescollectedfromTransactionsofNonferrousMetalsSocietyofChina■■■■■■■■■■■■■■■■■■■■■■■■■■■■一www．tnmsc．cnphysico—chemicalandmicrobialevaluationofchromitemineenvironmentofSukinda，Indias．DASl，S．C．PATNAIKl，H．K．SAHU2，A．CHAKRABORTY3，M．SUDARSHAN3，H．N．THATOI1．DepartmentofBiotechnology，CollegeofEngineeringandTechnology,BijuPatnaikUniversityofTechnology,Bhubaneswar,Odisha一751003，India；2．DepartmentofZoology,NorthOrissaUniversity,Baripada，Odisha-757003，India；3．UniversityGrantsCommission-DepartmentofAtomicEnergy,CenterforScientificResearch，KolkataCentre，BidhanNagar,Kolkata，WestBengal一700098，IndiaReceived7March2012；accepted6June2012Abstract：watersamplesfromchromiteminequarryofSukindaanditsadjacentareaswereanalyzedfortheirheavymetalcontaminationalongwithphysico—chemicalandmicrobialcontents．ThechromiteminewatersamplespossessedhighconcentrationsofheavymetalsintheorderofCr>Fe>Zn>Ni>Co>MilwhilegroundwaterdidnotshowanyheavymetalcontaminationexceptFe．Physico．chemicalparametersofminewatersamplesshoweddeviationfromthoseofnormalwater．Minewaterharboured10wmicrobialpopulationsofbacteria．fungiandactinomycetesincomparisonwithmineadjacentwatersamples．Thecorrelationofdatabetweenmetalswithphysieo．chemicalparametersshowedbothpositiveandnegativeresponseswhilethatofmetalandmicrobialpopulationexhibitednegativecorrelation．Bacterialstrainsisolatedfromchromiteminewaterexhibitedhightolerancetowardschromiumandotherheavymetalsaswellasantibioticswhichcouldbeusedasanindicatorofheavymetalpollution．Keywords：bioremediation；hexavalentchromium；physico·chemicalproperties；minewaterpollution；microbialpopulation；chromiumtolerantbacteria1IntroductionEnvironmentalpollutionduetotoxicmetalionsisoneofthemajorconcernsinminingareasaroundtheworld．Heavymetalsarestableandpersistentenvironmentalcontaminantssincetheycannotbedegradednordestroyed[1]．Theyproduceadverseeffectsonhealtho