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基于LaCl_3调控作用下绿萝净化甲醛能力及生理生化变化研究（英文）.docx

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基于LaCl_3调控作用下绿萝净化甲醛能力及生理生化变化研究（英文） ResearchonthePurificationAbilityandPhysiologicalandBiochemicalChangesofChlorophytumcomosumunderLaCl3RegulationforFormaldehydeRemoval Abstract Withtheincreasingawarenessofindoorairquality,thepurificationabilityofplantshasbeenpaidmoreandmoreattention.Inthisstudy,Chlorophytumcomosumwasselectedastheresearchobject,andtheeffectofLaCl3regulationonitspurificationabilityandphysiologicalandbiochemicalchangesintheremovalofformaldehydewasanalyzed.TheresultsshowedthatLaCl3couldsignificantlyincreasethecontentofchlorophylla,chlorophyllb,andcarotenoidsinCh.comosumleaves,whilethecontentofpolyphenolsandfreeprolinedecreased.Moreover,LaCl3significantlyimprovedtheformaldehyderemovalefficiencyofCh.comosum.Theformaldehyderemovalratereacheditspeakat5.68mg/(m²•h)underthetreatmentof10mg/LLaCl3for24h.Finally,themechanismofLaCl3regulationonthepurificationabilityofCh.comosumwasdiscussed. Introduction Formaldehydeisadetrimentalairpollutantwiththeabilitytocauseirritationoftherespiratorytract,eyes,andskinandinduceallergicreactionsandcancer.Inrecentyears,plantshavebeenwidelyregardedasacost-effectiveandeco-friendlyremovalstrategyforformaldehydeduetotheirstrongair-purifyingability.Chlorophytumcomosum,acommonhouseplant,isknownforitsexcellentabilitytoremovevariousairpollutants. Previousresearchhasdemonstratedthatthepurificationabilityofplantsisaffectedbymanyfactors,suchasillumination,temperature,andCO2concentration.Moreover,somestudieshaveshownthatexternalstimuli,suchasmineralnutrientelements,hormones,andotherrelatedsubstances,canaffectthepurificationabilityofplants.Inthisstudy,LaCl3,oneofthemineralnutrientelements,wasappliedtoregulatethepurificationabilityofCh.comosum. MaterialsandMethods Plantmaterialsandcultureconditions Ch.comosumwaspurchasedfromalocalnurseryandcultivatedinagreenhouseunderthefollowingconditions:anambienttemperatureof25℃,relativehumidityof70%,a12-hphotoperiod(photosyntheticphotonfluxdensity:150μmol/m^2•s^-1),andasubstrateofpeat-perlitemixturewitha1