The influence of environmental pollution with fluorine compounds on the level of fluoride in soil, feed and eggs of laying hens in Central Pomerania, Poland

Abstract

The present study was aimed at evaluating fluorine contamination of the eggs of free-ranging laying hens in Northern Poland, in the Central Pomerania region, in relation to the distance from the emission sources. Fluorine levels in the soil, feed, and the shells, and contents of the eggs were assayed with the potentiometric method using an ion-selective electrode from ORION Ion Meter. The sampled eggs were subjected to pressure microwave digestion with the use of a Milestone MLS-1200 microwave. All the samples were digested in 5 ml of supra-pure grade concentrated HNO 3 from Merck. The mean level of fluorine in the studied soils ranged from 3.79 mg kg −1 of DM in typical river alluvial soil to 126.19 mg kg −1 of DM in lessive soil. The study revealed an average fluorine content in the feeds administered to the hens on the farms in zone 1 (17.29 mg kg −1 of DM), it being 3.5 times higher than the corresponding content in zone 2 (4.92 mg kg −1 of DM). A statistically significantly higher mean fluorine level was identified in the eggshells of hens on zone 1 farms, located closer to the pollution emission sources (17.52 mg kg −1 of DM), the value being more than 3fold higher than that in zone 2 (5.47 mg kg −1 of DM). The present study revealed an almost twice as high fluorine mean content in the hen eggs collected on farms in zone 1 (1.488 mg kg −1 of DM) compared with the hen egg contents in the experimental zone 2 (0.640 mg kg −1 of DM), the difference being statistically significant.

Evaluating the Environmental Impacts of Fluoride on the Growth and Physiology of Cotton (Gossypium hirsutum)

“…Anand-2 (Brahmbhatt and Patel, 2013). have also been demonstrated by Singh et al, (2013); Alim et al (2017) and Ahmed et al (2018); Elżbieta et al (2020). According to Hong et al (2016); Justyna et al (2020) fluoride produced negative impacts on the morphology, physiology and even caused death of cells.…”

Low-temperature oxidative removal of gaseous formaldehyde by an eggshell waste supported silver-manganese dioxide bimetallic catalyst with ultralow noble metal content

“…Fluorine impurities were also present on the surfaces of all the eggshell-based materials (Figure S6). It was reported that the fluorine (present in potable H2O and the feed components) consumed by laying hens often ends up in the eggshell during its mineralization [52]. In addition, the presence of Ag and Mn on the Ag-MnO2 catalyst surfaces indicates the successful formation of the catalytic materials (Figure S6).…”

Fluoride in the Central Nervous System and Its Potential Influence on the Development and Invasiveness of Brain Tumours—A Research Hypothesis

“…Consequently, drinking water, which may also be artificially fluoridated as a public health measure, and food are major sources of fluoride uptake in humans. The degree of fluoride exposure is affected by the quality of food and water, the amount consumed, as well as individual variability [ 36 , 37 , 38 , 39 ].…”