Analysis of chemical forms of heavy metals in contaminated soil by sequential extraction methods

Kwon, Ohhyeok; Jung, Kyungbae; Yoo, Kyoungkeun; Park, Jay Hyun; Choi, Ui Kyu

doi:10.1080/12269328.2013.862873

Cited by 6 publications

(1 citation statement)

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“…따라서, 풍화된 형태와 풍화되지 않은 형태를 동시에 함유한 토양오염의 경우는 비중선별 등의 광물처리공정 후 화학적 침출공정에 의해 처리되어야 한 다 (Mercier et al, 2002). Ure et al, 1993)이 있으며, 이 방법들은 주로 농토 (Atkinson et al, 2011;Liu et al, 2013;Yang et al, 2013), 산업부지 (Bisone et al, 2012;Burrows and Peters, 2013;Yarlagadda et al, 1995), 호수 및 우물 퇴적토 (Harichandan et al, 2013;Sahuquillo et al, 1999), 광산지 대 (Anju and Banerjee, 2011;Atkinson et al, 2011;Martinez-Martinez et al, 2013), 도시하수슬러지 (Zhu et al, 2011), 강기슭 (Howari and Banat, 2001), 사격장 (Chen et al, 2002;Kwon et al, 2013;Lee and Oa, 2012 MgCl 2 용액 8 cm (Fig. 3(a)), 탄산염 결합형태에 37.5%-56.3%, 산화물 결합형태에 14.5%-36.2%, 그리고 잔사에 4.7%-45% 존재한다.…”

Section: 서 론 군부대에서의 소형화기훈련이나 민간사격장의 레저활동unclassified

The Determination of Chemical Forms of Heavy Metals in Shooting Area Contaminated Soil Using Sequential Extraction Method

Moon¹,

Park²,

Yoo

et al. 2015

Journal of Soil and Groundwater Environment

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The soil sample obtained from shooting area contaminated with Pb, Cu, and Zn was investigated to determine the chemical forms of heavy metals with Tessier's sequential extraction method, which is constituted of five fractions such as 'exchangeable', 'bound to carbonate', 'bound to oxide', 'bound to organic matter', and residual fractions. The amount of organic matter was measured by loss on ignition (LOI) and then the results of 'bound to organic matter' and LOI were compared. The sequential extraction results show that 4.7%-45% of Pb, 6.2%-25.9% of Cu and 3.9%-15.3% of Zn belong to the 'bound to organic matter' fraction, but LOI result shows that only 1.0%-2.8% of organic matter exists in the soil sample. In heavy medium separation tests, because Pb and Cu extracted in 'bound to organic matter' and residual fractions were removed, the heavy metals in the fractions would exist as heavier forms. These results suggest that the part of heavy metal extracted in 'bound to organic matter' fraction would result from the oxidation of metallic forms by hydrogen peroxide and nitric acid used in the fraction, and, consequently, that the 'bound to organic matter' fraction should be investigated in detail to determine the removal method and treatment capacity when the Tessier's sequential extraction method is used to examine heavy metal contaminants resulted from elemental metal like bullets.

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