期刊论文

Effects of Two Amendments on Remedying Garden Soil Complexly Contaminated with Pb, Cd and As

Liao, Bo-Han(liaobh1020@163.com)

中文

环境科学

0250-3301

2017

38

6

2553-2560

10.13227/j.hjkx.201611179

2016:农业部、财政部科研专项 41501344:国家自然科学基金 2006180:湖南省重点学科建设项目

本校为第一机构

通过辣椒种植田间试验,研究了硫酸铁和碳酸钙对土壤Pb、Cd和As复合污染的生物有效性以及对辣椒中Pb、Cd、As迁移与累积的影响.结果表明:①硫酸铁和碳酸钙都能显著降低土壤中Pb、Cd的TCLP提取态含量,使土壤中As的TCLP提取态含量显著升高.②硫酸铁使辣椒果实中Pb和Cd含量分别降低7.2%~22.9%和2.3% ~ 2.9%,而对As含量没有影响;碳酸钙使辣椒果实中Pb、Cd、As的含量分别降低15.8% ~16.3%、11.8% ~ 15.0%、0.03% ~ 53.2%.③硫酸铁使辣椒茎到果实中Pb、Cd、As的转运系数分别最大降低16.7%、68.0%、10.2%;碳酸钙使辣椒茎到果实中Pb、Cd、As的转运系数分别最大降低16.7%、51.5%、45.6%.硫酸铁和碳酸钙都能...

This paper studied the effects of two amendments (iron sulfate [Fe2 (SO4)3] and calcium carbonate [CaCO3]) on the bioavailability of Pb, Cd and As in a garden soil and on the migration and accumulation of Pb, Cd and As in pepper through an in-situ experiment planting pepper plants. The results indicated that: ① Addition of these amendments significantly decreased TCLP extractable contents of Pb and Cd in soil, and increased TCLP extractable contents of As. ②Compared with the control group, addition of Fe2 (SO4)3 led to reduction in contents o...