Evaluation of the accumulation of heavy metals in water, sediments and plants of a coastal zone of Mexico

Abstract

A preliminary environmental assessment of four heavy metals (Mn, Pb, Zn and Fe) on the coast of Campeche, Mexico was carried out. Surface sediments (0–10 cm), water and plants were collected in four sites of the coastline to obtain information about the levels and spatial distribution of the selected elements. The bioconcentration factor (BCF) was calculated for plants, where the BCF of Mn (3.375–3.558) and Zn (0.291–0.888) were high for Conocarpus erectus (button mangrove) and the BCF of Fe ranged from 0.022 to 0.023 in Laguncularia racemosa (white mangrove). This study showed that a significant source of metal contamination in the coastline of Campeche could be the discharge of municipal sewage. The relationship among metals, water, sediments and plants revealed a distinct behaviour of metals transportation in the marine environment. Mangroves operated as excluder species for nonessential metals (Pb) and accumulators for essential metals (Zn). Results showed that mangroves could be employed as a phytostabiliser of heavy metals.

Assessment of industrial effluents for heavy metals concentration and evaluation of grass (Phalaris minor) as a pollution indicator

“…Different capabilities of plants to uptake heavy metals might have resulted in weak correlation between metals in plants [ 52 ]. Metals distribution in plants mainly depends upon plant species, water transport, availability and form [ 53 ]. Translocation of metals and compartmentalization in plant tissues are the reasons for variations in concentration of metals and stem acts as a pathway for transfer of metals thus low metals concentration is recorded in shoots [ 54 ].…”

“…L. spartum, G. decander, A. serratuloides were identified as pollution indicators [ 57 ]. The identification of plants growing at sites contaminated with heavy metals, can provide information about the mechanism of tolerance to heavy metals and their accumulation in plants [ 58 ]. On one hand, heavy metals are accumulated in plants specifically in their roots and their correlation with heavy metals in substrate may represent the level of contamination, but on the other hand, these accumulated heavy metals upon subsequent release into the environment during decomposition results in recycling of heavy metals in the environment.…”

Interactions and associated resistance development mechanisms between microplastics, antibiotics and heavy metals in the aquaculture environment

“…[28][29][30][31] The abundance and concentration of MPs, heavy metals and antibiotics reported in the aquaculture environment are summarised in Table 1. [32][33][34][35][36][37][38][39][40][41][42][43][44][45]…”

“…MPs, heavy metals, and antibiotics are all pollutants that are ubiquitous in aquaculture environments and have potentially negative effects on aquatic ecosystems 28‐31 1 32‐45 …”

Preliminary Study of Heavy Metals of Cymodocea rotundata in Doreri Bay Manokwari Regency

“…Tingginya proposi logam berat Pb pada bagian akar dan rhizome di Pantai Yankarwar dikarena oleh kondisi daerah tersebut yang agak terlindung sehingga mengakibatkan terperangkapnya logam berat yang bersamaan dengan sedimen serta terjadinya pengayakan dari logam berat Pb oleh akar (Gómez-Bernal et al, 2020). Menururt (Bidayani et al, 2017) tingkat penyerapan Pb lebih tinggi di akar karena akar merupakan bagian tubuh dari lamun yang langsung berasosiasi terhadap sedimen.…”