Accumulation du cadmium par quelques espèces végétales cultivées aux environs d'une usine d'engrais phosphatés à Sfax (Tunisie)

Mezghani, Imed; Boukhris, Makki; Chaïeb, Mohamed

doi:10.4267/pollution-atmospherique.3386

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the limits of contaminants in food (GB 2762-2005), the median value of fluoride content in vegetables was higher than the limit value (1 mg kg −1 ) by 129.00%, and 53.85% of vegetable samples exceeded this limit. This finding is similar to the studies reported by Mezghani et al [36] where large quantities of fluoride was accumulated by vegetation growing in vicinity of the factory. In the soil-vegetables system, vegetables efficiently absorb free fluoride ions, leading to the accumulation of fluoride, thus making vegetables a significant contributor to human exposure to fluoride [27].…”

Section: Fluoride Content In Vegetablessupporting

confidence: 92%

Contamination Status and Ecological Security Thresholds of Fluoride in Farmland around a Phosphorus Chemical Plant in a Karst Area of Southwestern China

Guo

Wang

Dai

et al. 2023

Toxics

View full text Add to dashboard Cite

The phosphorus chemical plant (PCP) production process leads to the substantial discharge of fluoride into the surrounding environment. However, there is limited research data regarding the pollution levels and ecological safety thresholds of farmland fluoride around PCPs in karst areas. This study evaluates the local contamination status and health risks by determining the fluoride content in farmland and vegetables in vicinity of a PCP in a karst area of Southwestern China. Farmland ecological security threshold was derived based on the species sensitivity distribution (SSD) model. Results showed that the fluoride contents in the soil ranged from 529.36 to 1496.02 mg kg−1, with the median value of 823.93 mg kg−1, which was higher than the national background value in China (478 mg kg−1) by 172.37%. Fluoride contents in vegetables ranged from 0.01 to 25.21 mg kg−1, with the median value of 1.29 mg kg−1, which was higher than the limits of contaminants in food (1 mg kg−1) by 129.00%, and 53.85% of vegetable samples were contaminated. Leafy vegetables showed a higher tendency of fluoride enrichment compared to non-leafy vegetables. Despite there being no significant health risk to the residents via the intake of vegetables overall, there may be potential health risks from the intake of sweet potato leaves. Based on the SSD model, the ecological safety thresholds of fluoride in local farmland was classified into the suitable for planting category (≤174.13 mg kg−1), safe plant utilization category (174.13–4005.42 mg kg−1), and strict control of planting category (≥4005.42 mg kg−1). These findings will provide valuable insights to facilitate the safe cultivation of local agricultural products and optimize the utilization of soil resources.

show abstract

Section: Fluoride Content In Vegetablessupporting

confidence: 92%

Contamination Status and Ecological Security Thresholds of Fluoride in Farmland around a Phosphorus Chemical Plant in a Karst Area of Southwestern China

Guo

Wang

Dai

et al. 2023

Toxics

View full text Add to dashboard Cite

show abstract

“…Several studies have used olive leaves as a bionidicator of air pollution (Sait et al, 2013;Mezghanni et al, 2000;Elloumi et al, 2003;Eliwa et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Heavy metals transfer in leaves, stem and roots of olive tree near roads in the region of Sfax (Tunisia) and their impact on physiological characteristics

Mbadra,

Gargouri,

Mbarek

et al. 2024

Preprint

View full text Add to dashboard Cite

In this study we try to evaluate the accumulation of heavy metals, including Pb, Zn, Cu and Cr in the soil, the entry into plants, and the effect on the physiological and biochemical processes of olive tree. We try to study the contamination of the leaves, stem and roots of olive trees collected from 24 sampling sites throughout three roads in the region of Sfax, Tunisia. To better study this contamination, we used two contamination indices, the accumulation and translocation factor. For Gremda road, Pb and Zn contamination does not exceed 50m. For Tunis road, contamination of leaves stems and roots by Pb and Cr arrived up to 50m in the eastern and western side of the road. In contrast, Zn contamination reached 50m in the eastern and 25m in the western side of road. Likewise, metal contamination affects the roots and leaves of Manzel Chaker olive trees at a distance of 3m but this contamination does not affect the physiological and biochemical mechanisms of the latter. The contamination of sites near Tunis and Gremda roads affects the chlorophyll assimilation of olive trees planted in these sites but, the chlorophyll contents of Manzel chaker sites are less affected. On the other hand, for soluble sugars, the olive leaves close to Manzel Chaker and Tunis roads recorded higher sugar contents than those of Gremda sites. The leaves of olive trees in the sites close to Gremda and Tunis roads showed a weakened antioxidant activity compared to that recorded in the control sites.

show abstract

Accumulation du cadmium par quelques espèces végétales cultivées aux environs d'une usine d'engrais phosphatés à Sfax (Tunisie)

Cited by 2 publications

References 0 publications

Contamination Status and Ecological Security Thresholds of Fluoride in Farmland around a Phosphorus Chemical Plant in a Karst Area of Southwestern China

Contamination Status and Ecological Security Thresholds of Fluoride in Farmland around a Phosphorus Chemical Plant in a Karst Area of Southwestern China

Heavy metals transfer in leaves, stem and roots of olive tree near roads in the region of Sfax (Tunisia) and their impact on physiological characteristics

Contact Info

Product

Resources

About