Extractability of Heavy Metals in Sediments and Farmland Soil in the To Lich and Kim Nguu River System
スポンサーリンク
概要
- 論文の詳細を見る
The purpose of the present study was to evaluate the availability and mobility of heavy metals in sediments and farmland soils in the To Lich and Kim Nguu River system through the amount of heavy metals extracted with acids and its percentage to total metal concentration. Twelve sediment samples were collected from the To?Lich, Kim?Nguu River and 19 soil samples were colleted at two different locations in agricultural field and pappy field along the river. The results showed that the highest amount of heavy metals extracted from the sediment samples with 0.5M HCl and 0.1M HNO_3 was in the order of Zn > Cr > Cu > Pb > Ni > Cd and Cr > Zn > Ni > Cu > Pb > Cd, respectively. The average percentage of the amount of extractable metals to the total metal concentration for the agricultural soil was the highest for Ni (70%), followed by Cr (65%), Cd (50%), Zn (20%), Pb (10%) and Cu (7%), suggesting that Ni is more labile and available to plants than other elements. The average percentage for the paddy soil was the highest for Cr (75%), followed by Ni (50%), Cd (40%), Zn (30%), Pb (20%) and Cu (15%), suggesting the highest availability of Cr to plants. In general, the amount of the extracted heavy metals was similar between the agricultural and paddy soil. The amount of heavy metals extracted with 0.5M HCl was greater than that extracted with 0.1 M HNO3 for all metals except Cr.
論文 | ランダム
- シリコン・ナノワイヤーMOSFETを利用した室温動作可能な単一電子デバイス(第15回先端半導体デバイスの基礎と応用に関するアジア・太平洋ワークショップ(AWAD2007))
- 19pRC-3 SiO_2/Si/SiO_2量子井戸に閉じ込められた二次元電子系における電気抵抗の温度依存性(量子細線・量子井戸,領域4,半導体,メゾスコピック系・局在)
- Siナノドットアレイを用いた多入力単電子デバイス(量子ナノと情報処理機能,量子効果デバイス及び関連技術)
- 平成22年度の試験を振り返る 詳細解説 電験三種(1)理論
- 80) ASDを背景として微小肝細胞癌に由来する右房内球状腫瘍血栓をきたした1例 : 日本循環器学会第48回近畿地方会