Toxic heavy metals in a landfill environment (Vientiane, Laos): Fish species and associated health risk assessment

被引:2
|
作者
Noudeng, Vongdala [1 ,2 ]
Pheakdey, Dek Vimean [1 ,3 ]
Xuan, Tran Dang [1 ,4 ]
机构
[1] Hiroshima Univ, Grad Sch Adv Sci & Engn, 1-5-1 Kagamiyama, Higashihiroshima 7398529, Japan
[2] Minist Nat Resources & Environm, Dongnasok Nong Beuk Rd,POB 7864, Viangchan 0117, Laos
[3] Minist Environm, Dept Hazardous Subst Management, Phnom Penh 120101, Cambodia
[4] Hiroshima Univ, IDEC Inst, Ctr Planetary Hlth & Innovat Sci PHIS, 1-5-1 Kagamiyama, Higashihiroshima 7398529, Japan
关键词
Leachate; Heavy metal; Anabas testudineus; Channa striata; Human health risk; MUNICIPAL SOLID-WASTE; WATER; CONTAMINATION; LEACHATE; RIVER; SEDIMENT; LAKE; BIOACCUMULATION; MANAGEMENT; CADMIUM;
D O I
10.1016/j.etap.2024.104460
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Leachates from municipal landfills introduce toxic heavy metals into water, causing bioaccumulation. This study assesses metal levels and potential human health risks associated with consuming Anabas testudineus and Channa striata. Inductively coupled plasma mass spectrometry detected Cd, Cu, Cr, Ni, Pb, and Zn in both fish species. Leachate metal concentrations meet international discharge standards, Cd, Cr, and Pb in the fish exceed the international accepted values. Gastrointestinal tract+liver samples show significant variation between species, particularly in Cd and Pb. EDI, THQ/HI, and TR for the both species fall below TDIs, lower than the limit of 1, and within the acceptable range of the US-EPA permissible limit, respectively. Fish consumption appears safe regarding carcinogenic risk, but exceeding metal limits could impact heavy metals accumulation in the local food chain. Raising public awareness is crucial, and governmental agencies and environmental organizations should enhance waste treatment technologies and enact relevant health legislation.
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收藏
页数:10
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