지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
Agricultural soils surrounding mine areas in South Korea are often contaminated with multiple metals such as Cd, Pb and Zn. It poses potential risks to plants, soil organisms, groundwater, and eventually human health. The aim of this study was to examine the changes in phytoavailability of Cd, Cu, Pb and Zn after application with calcined eggshell (CES; 0, 1, 3, and 5% W/W) in an agricultural soil contaminated by mine tailings. The contents of Cd, Cu, Pb and Zn in soils were 8.79, 65.4, 1602, and 692 mg kg<SUP>-1</SUP> (aqua regia dissolution), respectively. The experiments were conducted with lettuce (Lactuca sativa L. var. longifolia) grown under greenhouse conditions during a 30-d period. NH₄NO₃ solution was used to examine the mobile fraction of these metals in soil. The application of CES dramatically increased soil pH and inorganic carbon content in soil due to CaO and CaCO₃ of CES. The increased soil pH decreased the mobile fraction of Cd, Pb, Zn: from 3.49 to < 0.01 mg kg-1 for Cd, from 79.4 to 1.75 mg kg-1 for Pb, and from 29.6 to 1.13 mg kg<SUP>-1</SUP> for Zn with increasing treatment of CES from 0 to 5%. In contrast, the mobile fraction of Cu was increased from 0.05 to 3.08 mg kg<SUP>-1</SUP>, probably due to the formation of soluble CuCO₃ 0 and Cu-organic complex. This changes in the mobile fraction resulted in a diminished uptake of Cd, Pb and Zn by lettuce and an increased uptake of Cu: from 4.19 to < 0.001 mg kg<SUP>-1</SUP> dry weight (DW) for Cd, from 0.78 to < 0.001 mg kg-1 DW for Pb, and from 133 to 50.0 mg kg<SUP>-1</SUP> DW for Zn and conversely, from 3.79 up to 8.21 kg<SUP>-1</SUP> DW for Cu. The increased contents of Cu in lettuce shoots did not exceed the toxic level of > 25 mg kg<SUP>-1</SUP> DW. The mobile contents of these metals in soils showed a strong relationship with their contents in plant roots and shoots. These results showed that CES effectively reduced the phytoavailability of Cd, Pb, and Zn to lettuce but elevated that of Cu in consequence of the changed binding forms of Cd, Cu, Pb, and Zn in soils. Based on these conclusions, CES can be used as an effective immobilization agent for Cd, Pb and Zn in contaminated soils. However, the CES should be applied in restricted doses due to too high increased pH in soils.
목차
Introduction
Materials and Methods
Results and Discussion
Conclusions
References
참고문헌 (33)
참고문헌 신청
1. [학술지(정기간행물)] - Ahmad, M. / 2012 / Immobilization of lead in a Korean military shooting range soil using eggshell waste: An integrated mechanistic approach / Journal of Hazardous Materials 209-210 : 392 ~ 401
2. [기타자료] - BBodSchV (German Federal Soil Protection and Contaminated Sites Ordinance) / 1999 / BBodSchV vom 12. Juli 1999 (BGBl. I S. 1554), geaendert durch Artikel 2 der Verordnung vom 23
3. [기타자료] - / 2004 / Dezember 2004 (BGBl. I S. 3758). Bundesministerium fuer Umwelt, Naturschutz und Reaktorsicherheit (BMU)
4. [단행본] - Benton, J. Jr. / 1991 / Plant analysis handbook / Micro-Macro Publishing, Inc. : 182 ~ 183
5. [단행본] - Blume, H.P. / 2010 / Scheffer/Schachtschabel - Lehrbuch der Bodenkunde. 16th ed / Spektrum Akademischer Verlag : 435 ~ 437
2. [기타자료] - BBodSchV (German Federal Soil Protection and Contaminated Sites Ordinance) / 1999 / BBodSchV vom 12. Juli 1999 (BGBl. I S. 1554), geaendert durch Artikel 2 der Verordnung vom 23
3. [기타자료] - / 2004 / Dezember 2004 (BGBl. I S. 3758). Bundesministerium fuer Umwelt, Naturschutz und Reaktorsicherheit (BMU)
4. [단행본] - Benton, J. Jr. / 1991 / Plant analysis handbook / Micro-Macro Publishing, Inc. : 182 ~ 183
5. [단행본] - Blume, H.P. / 2010 / Scheffer/Schachtschabel - Lehrbuch der Bodenkunde. 16th ed / Spektrum Akademischer Verlag : 435 ~ 437
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UCI(KEPA) : I410-ECN-0101-2015-520-001318438