中国有色金属学报(英文版)
中國有色金屬學報(英文版)
중국유색금속학보(영문판)
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2012年
6期
1462-1469
,共8页
杨淼%肖细元%苗旭峰%郭朝晖%王凤永
楊淼%肖細元%苗旭峰%郭朝暉%王鳳永
양묘%초세원%묘욱봉%곽조휘%왕봉영
植物修复%芦竹%土壤改良剂%重金属污染土壤%重金属累积
植物脩複%蘆竹%土壤改良劑%重金屬汙染土壤%重金屬纍積
식물수복%호죽%토양개량제%중금속오염토양%중금속루적
phytoremediation%giant reed%soil amendments%heavy metal contaminated soil%metal uptake
通过室内盆栽试验研究在As、Cd和Pb复合污染土壤中施用醋酸、柠檬酸、EDTA、海泡石和磷石膏5种改良剂对芦竹生长及重金属吸收的影响.结果表明,施加5.0 mmol/kg柠檬酸或2.5 mmol/kg EDTA时,芦竹地上部生物量较没添加的对照的分别增加了24.8%和15.0%,芦竹叶片中过氧化氢酶及过氧化歧化酶活性较对照的无显著变化.与对照相比,添加2.5 mmol/kg醋酸、2.5 mrnol/kg柠檬酸、5.0 mmol/kg EDTA及4.0 g/kg海泡石时,地上部中As、Cd、Pb的浓度显著增加(P<0.05).改良剂能明显提高芦竹地上部重金属累积量,地上部中As、Cd的累积量在上述条件下均显著增加(P<0.05),Pb累积量在添加4.0 g/kg海泡石和8.0k/kg磷石膏时显著高于对照(P<0.05).醋酸、柠檬酸和海泡石可作为合适改良剂促进重金属污染土壤上芦竹对土壤中重金属的累积.
通過室內盆栽試驗研究在As、Cd和Pb複閤汙染土壤中施用醋痠、檸檬痠、EDTA、海泡石和燐石膏5種改良劑對蘆竹生長及重金屬吸收的影響.結果錶明,施加5.0 mmol/kg檸檬痠或2.5 mmol/kg EDTA時,蘆竹地上部生物量較沒添加的對照的分彆增加瞭24.8%和15.0%,蘆竹葉片中過氧化氫酶及過氧化歧化酶活性較對照的無顯著變化.與對照相比,添加2.5 mmol/kg醋痠、2.5 mrnol/kg檸檬痠、5.0 mmol/kg EDTA及4.0 g/kg海泡石時,地上部中As、Cd、Pb的濃度顯著增加(P<0.05).改良劑能明顯提高蘆竹地上部重金屬纍積量,地上部中As、Cd的纍積量在上述條件下均顯著增加(P<0.05),Pb纍積量在添加4.0 g/kg海泡石和8.0k/kg燐石膏時顯著高于對照(P<0.05).醋痠、檸檬痠和海泡石可作為閤適改良劑促進重金屬汙染土壤上蘆竹對土壤中重金屬的纍積.
통과실내분재시험연구재As、Cd화Pb복합오염토양중시용작산、저몽산、EDTA、해포석화린석고5충개량제대호죽생장급중금속흡수적영향.결과표명,시가5.0 mmol/kg저몽산혹2.5 mmol/kg EDTA시,호죽지상부생물량교몰첨가적대조적분별증가료24.8%화15.0%,호죽협편중과양화경매급과양화기화매활성교대조적무현저변화.여대조상비,첨가2.5 mmol/kg작산、2.5 mrnol/kg저몽산、5.0 mmol/kg EDTA급4.0 g/kg해포석시,지상부중As、Cd、Pb적농도현저증가(P<0.05).개량제능명현제고호죽지상부중금속루적량,지상부중As、Cd적루적량재상술조건하균현저증가(P<0.05),Pb루적량재첨가4.0 g/kg해포석화8.0k/kg린석고시현저고우대조(P<0.05).작산、저몽산화해포석가작위합괄개량제촉진중금속오염토양상호죽대토양중중금속적루적.
The effects of five amendments such as acetic acid(AA),citric acid (CA),ethylenediamine tetraacetic acid (EDTA),sepiolite and phosphogypsum on growth and metal uptake of giant reed (Arundo donax L.) grown on soil contaminated by arsenic (As),cadmium (Cd) and lead (Pb) were studied.The results showed that the shoot biomass of giant reed was enhanced by 24.8% and 15.0%,while superoxide mutase and catalase activities slightly varied when adding 5.0 mmol/kg CA and 2.5 mol/kg EDTA to soil as compared to the control,respectively.The concentrations of As,Cd and Pb in shoots were remarkably increased by the addition of 2.5 mmol/kg AA and CA,5.0 mmol/kg EDTA,and 4.0 g/kg sepiolite as compared to the control.The accumulations of As and Cd were also significantly enhanced in the above condition,while the shoot Pb accumulation was noticeably enhanced by amending with 4.0 g/kg sepiolite and 8.0 g/kg phosphogysum,respectively.The results suggested that AA,CA and sepiolite could be used as optimum soil amendments for giant reed remediation system.