Scholarlink

<p>The River Niger floodplain is among the most stressed floodplains in the world, arising from the impacts of agriculture, and urban and industrial development, especially in the oil and gas sectors which have altered the ecosystem structures and functions. Thus, organochlorine pesticide (OCP) concentrations were evaluated in floodplain soils from the lower sections of the River Niger to explore their distribution patterns and interrelationships with soil depth, sources, and ecosystem and human health risks. The Σ20 OCP concentrations in the soils from depths of 0–15, 15–30 and 30–45&#xa0;cm varied from 5.0 to 592, 7.1–281 and 8.12–507 ng g<sup>−1</sup>, respectively. The average Σ20 OCP concentrations decreased with depth. Chlordane was the predominant OCP in the soil profiles. The risk assessment suggested that the concentrations of OCPs in the soil profiles can adversely affect the ecosystem and farmers in the floodplain. The source apportionment investigation showed the predominance of historical sources over recent use of OCPs in the floodplain soils.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Impact of organochlorine pesticide pollution in floodplain soils of the river Niger

  • 期刊论文

  • 发表日期：

    2026年1月13日

查看全文
  • Chukwujindu M.A. Iwegbue,
  • Andrew E. Aziza,
  • Stephen U. Oghoje,
  • Ijeoma F. Ogwu,
  • Chijioke Olisah,
  • Godwin E. Nwajei,
  • Bice S. Martincigh

摘要

The River Niger floodplain is among the most stressed floodplains in the world, arising from the impacts of agriculture, and urban and industrial development, especially in the oil and gas sectors which have altered the ecosystem structures and functions. Thus, organochlorine pesticide (OCP) concentrations were evaluated in floodplain soils from the lower sections of the River Niger to explore their distribution patterns and interrelationships with soil depth, sources, and ecosystem and human health risks. The Σ20 OCP concentrations in the soils from depths of 0–15, 15–30 and 30–45 cm varied from 5.0 to 592, 7.1–281 and 8.12–507 ng g−1, respectively. The average Σ20 OCP concentrations decreased with depth. Chlordane was the predominant OCP in the soil profiles. The risk assessment suggested that the concentrations of OCPs in the soil profiles can adversely affect the ecosystem and farmers in the floodplain. The source apportionment investigation showed the predominance of historical sources over recent use of OCPs in the floodplain soils.