title: [Effects of Remedies on the Remediation of Typical Pb and Zn-contaminated soil in Huanjiang, Guangxi].
abstract: Due to the collapse of the Pb/Zn tailing dam of Huanjiang, Guangxi, the farmland along Huanjiang River are strongly acidic and heavy metal-contaminated, resulting in the loss of agricultural production. To explore some remedies and the migration of heavy metals in heavy metal contaminated-soil of Huanjiang, this study investigated the effects of different types of amendments (lime, calcium magnesium phosphate, organic fertilizer, polypropylene amide) on tested soils through soil leaching test. The results showed that T1 soil was severely acidified, reducing the pH of the soil layer to clean contact, while T2, T3, T4, T5 could significantly improve the contaminated soil pH, ranging from 2.7 to 3.2, 1.6 to 2.7 respectively. Compared with T1, in the contaminated soil at 0-20 cm, T2, T3, T4, T5 could effectively activate Pb and immobilize Zn. Compared with T1, in 20-60 cm clean soil, there was no significant differences in the effect of different treatments on DTPA-Pb and DTPA-Zn (P < 0.05). Compared with T1, T4 and T5 could provide good growing conditions for plants, which might provide technical support for future measurements such as bioremediation.
authors.forename: Wei-quan
authors.initials: WQ
authors.lastname: Zeng
authors.forename: Bo
authors.initials: B
authors.lastname: Song
authors.forename: Li-zhu
authors.initials: LZ
authors.lastname: Yuan
authors.forename: Yu-fei
authors.initials: YF
authors.lastname: Huang
authors.forename: Feng-yan
authors.initials: FY
authors.lastname: Fu
mesh_terms: D000383:Agriculture; D000577:Amides; D017610:Calcium Compounds; D002681:China; D052918:Environmental Restoration and Remediation; D005308:Fertilizers; D007103:Immobilization; D007854:Lead / Q000737:chemistry*; D010087:Oxides; D010710:Phosphates; D011126:Polypropylenes; D045483:Rivers; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000302:isolation & purification*; D015032:Zinc / Q000737:chemistry*
chemical_list: D000577:Amides; D017610:Calcium Compounds; D005308:Fertilizers; D010087:Oxides; D010710:Phosphates; D011126:Polypropylenes; D012987:Soil; D012989:Soil Pollutants; C015335:calcium magnesium phosphate; D007854:Lead; C016538:lime; D015032:Zinc