農地からの野菜の食用部分における元素の生物学的蓄積:源の配分と潜在的なリスク
Rahat Khan1, Md Samium Basir2, Narottam Saha3
1Institute of Nuclear Science & Technology, Bangladesh Atomic Energy Commission (BAEC), Savar, Dhaka, 1349, Bangladesh.
Journal of environmental management
|August 27, 2025
まとめ
バングラデシュの土壌と野菜の重金属汚染は危険性があります. 産業用および自動車用ソースは食品を汚染し,高レベルのコバルト,クロム,マンガネスが人間の健康に影響します.
科学分野:
- 環境科学
- 環境化学
- 毒理学について
背景:
- 重金属 (HM) の汚染は,生態系,食品の安全性,人間の健康に影響を与える重大な環境問題です.
- 汚染源とリスクを把握することは,効果的な環境管理と公衆衛生の保護に不可欠です.
研究 の 目的:
- バングラデシュのチャットグラムの土壌と野菜のHM汚染を分析する.
- HM源を特定し,生態学的リスクを評価し,人間の健康への潜在的な影響を評価する.
主な方法:
- 中性子活性化分析を用いて17の元素を分析した.
- 地質環境指数とポジティブ・マトリックス・ファクタライゼーション (PMF) が使用されました.
- 生物蓄積因子 (BCF) と標的危険因子 (THQ) をリスク評価のために計算した.
主要な成果:
- 大量のアンチモニー (Sb) とヒ素 (As) の濃縮が観察され,地質学的および人為的な起源が混じり合っていた.
- 産業活動,農業,自動車の排出量,廃棄物の焼却はHM汚染の主な要因として特定されました.
- 非葉野菜では金属の吸収が高く,特に亜鉛 (Zn) とカリウム (K) が増加した.
- 健康リスク評価は,コバルト (Co),クロム (Cr),マンガン (Mn) の過剰なTHQを明らかにし,Crからの発癌リスクは安全限度を超えています.
結論:
- この研究では,HM汚染による環境の持続可能性と公衆衛生に対する重大なリスクが強調されています.
- 緊急 に 土壌 の 修復,農薬 の 制御 さ れ た 使用,そして 堅固 な 食品 安全 規制 を 強調 し て い ます.
- 研究地域におけるHMの曝露を軽減し,人口を保護するために,緩和戦略は不可欠です.
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