Assessment of heavy metal pollution in soils and health risk consequences of human exposure within the vicinity of hot mix asphalt plants in Rivers State, Nigeria

Ilechukwu, Ifenna; Osuji, Leo C.; Okoli, Chukwunonso Peter; Onyema, Mark Obinna; Ndukwe, Gloria Ihuoma

doi:10.1007/s10661-021-09208-6

“…If 95% confidence intervals were all less than 0, mining in Southwest China did not significantly increase the content of heavy metals in soil (p < 0:05). If the 95% confidence interval contained 0, it was believed that mining in Southwest China had no significant impact on the content of heavy metals in soil (p < 0:05) [13,14]. In order to more conveniently explained the influence of mining on the content of heavy metals in soil in Southwest China, the percentage change of the content was calculated by the following formula:…”

Section: Methodsmentioning

confidence: 99%

A Monitoring System for Air Quality and Soil Environment in Mining Areas Based on the Internet of Things

Dai

¹

,

Huang

²

,

Mao

³

2022

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In order to solve the intensifying problem of heavy metal pollution of soil in mining areas, a method for monitoring air quality and soil environment in mining areas based on the Internet of Things is proposed. Using meta-analysis method and health risk assessment method, the impact of mining on soil heavy metal content in Southwest China was quantitatively analyzed, and the relationship between soil heavy metal value and its potential influencing factors was discussed, as well as the heavy metal pollution, ecological risk, and health caused by soil mining activities. Risks were assessed. The results showed that artificial and oral intake were the main modes of soil heavy metal exposure, with the highest daily intakes for noncarcinogenic risk children and the highest daily intakes for carcinogenic risk adult females. The noncarcinogenic risk (HQ>1) of soil As and Pb exposure to children was 3.74 and 1.44, respectively. The carcinogenic risk values of As, Cd, Cr, and Ni in soil were all higher than 10-6, indicating that the carcinogenic risk was within the tolerance range of human body. Children were exposed to the combined noncarcinogenic risk ( HI = 3.83 ), and the risk values of the three types of recipients were 1.19 × 10 − 4 , 1.21 × 10 − 4 , and 1.06 × 10 − 4 , respectively. The correlation between heavy metal content and environmental factors was obtained. It is verified that the system in this paper can effectively monitor the meteorological environment and soil environment, and at the same time, it reveals the pollution law of heavy metals in the soil of the mining area, which provides supporting conditions for future mining and heavy metal pollution management.

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“…Therefore, the cable industry and Cu received an entry in Table 1 , f. Also the distance to the asphalt factory (sites 27–30, Fig. 1 C) and concentrations of Cd, Cr, Cu, Ni, Pb, and Zn that can be emitted, amongst others, by this production (Ilechukwu et al, 2021 ) were put into a linear regression but was not significant. The asphalt factory did not raise local heavy metal concentrations either, which is why it had no entry in Table 1 , f.…”

Section: Resultsmentioning

confidence: 99%

Heavy metals in soils of Mayabeque, Cuba: multifaceted and hardly discernable contributions from pedogenic and anthropogenic sources

Sosa

¹

,

Hilber²,

Buerge-Weirich³

et al. 2022

Environ Monit Assess

4

0

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Cuba is a country with considerable potential for economic growth, and special efforts are made to increase the agricultural output. As food production depends on the quality of soils, heavy metal concentrations were measured in 39 soils in the province of Mayabeque, Cuba, and interpreted in light of anthropogenic activities and pedogenic conditions (soil type and properties). With median concentrations of 1.8 Cd, 60.3 Cr, 48.1 Cu, 36.2 Ni, 16.7 Pb, 55.0 Zn, and 0.1 mg/kg Hg, soils of Mayabeque were mostly below Cuban quality reference values (QRV) representing benchmarks of quality standards but no official threshold values. Only Cd concentrations were in many cases above the QRV of 0.6 mg/kg and some Cu concentrations above the one of 83 mg/kg. While Cd, Cr, and Ni concentrations were rather pedogenically driven, Cu, Pb, Zn, and Hg contents were rather anthropogenically influenced. When evaluated statistically, Cd and Cr showed most times a significant influence of both sources. In contrast, Ni and Zn could not be significantly related with the origins investigated in this study. Hence, the allocation of heavy metal concentrations to pedogenic or anthropogenic contamination or pollution sources is tentative and needs further investigations. Nevertheless, the present data adds information on soil heavy metal concentrations in the Caribbean region, serves as reference before further industrial development, and sets the ground for adaptation of the QRV for Cd and possibly future national environmental standards.

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“…The amount of Cu and Zn in sample S3 of white garri from Japan is notably low at 0.20 mg/g and 0.13 mg/g, compared to S1, S2 and S4. It has been reported that metals such as Fe, Cu, and Zn are essential components of numerous alloys, wires, and car tyres, and that they are typically released to the roadside environment due to mechanical abrasion and natural wear and tear [14]. This indicated that the yellow garri with the highest concentrations of these metals may have either been roasted along a roadside, a market with substantial automobile traffic, or spread and sun-dried by the vehicular road side for secondary drying during processing and preparation.…”

Section: Concentration Of Ptes In Garri Samplesmentioning

confidence: 99%

“…MPs are plastic particles with a length of less than 5 mm (0.20 in) [12]. The growing body of data on MPs has shown that they are frequently incorporated into foods as contaminants from environment [13,14], during manufacture and processing [15,16] and/or contamination by plastic packaging [17]. Reports show that MPs (< 130 µ m) have the potential to translocate into human tissues, elicit localized immune response, release constituent monomers and toxic chemical additives used in plastic production, as well as pollutants adsorbed from the environment such as heavy metals [18] and organic compounds [19].…”

Section: Introductionmentioning

confidence: 99%

Preliminary characterization and probabilistic risk assessment of microplastics and potentially toxic elements (PTEs) in garri (cassava flake), a common staple food consumed in West Africa

Enyoh¹,

Wang

²

,

Rabin³

et al. 2023

Environ Anal Health Toxicol

5

0

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Garri from cassava is one of the most consumed foods in West Africa, hence this research was conducted to examine microplastics (MPs) and potentially toxic elements (PTEs) in garri from Nigeria (West Africa) and Japan. This is the first investigation on MPs in garri samples that has been reported in the literature. The study analyzed both packaged and unpackaged vended garri samples using microscopic/spectroscopic and X-ray fluorescence techniques for MPs and PTEs respectively. Microplastic particles in the garri samples ranged from (or were between) 2.00±2.00 – 175.00±25.16 particles/50 with > 90 % as fragments and consisted of polyacrylamide, polyethylene terepthalate, polyvinyl alcohol, high density polyethylene, polyvinyl chloride acrylonitrile, polyethylene chlorinated, polypropylene with silicate mix, polychloroprene and polyethylene chlorosulphonated. The mean concentration of PTEs raged from ND to 0.07 mg/g for Cr and Mn, 0.73 to 5.63 mg/g for Fe, ND to 0.57mg/g for Co, 0.23 to 1.21 mg/g for Ni, 0.15 to 1.53 mg/g for Cu, and 0.12 to 0.63 mg/g for Zn. However, their daily intake was low for both adult and children as with the MPs. The sources of MPs and PTEs were mainly from the garri production processes, atmospheric dusts and during packaging. The non-carcinogenic risk for all samples was low for MPs while in openly vended garri, Ni and Cr in all sample poses carcinogenic risks. There is a need to improve indigenous garri processing techniques to minimize contamination. This research emphasizes the critical necessity to understand the consequences of MPs on human health.

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Assessment of heavy metal pollution in soils and health risk consequences of human exposure within the vicinity of hot mix asphalt plants in Rivers State, Nigeria

Cited by 25 publications

References 49 publications

A Monitoring System for Air Quality and Soil Environment in Mining Areas Based on the Internet of Things

A Monitoring System for Air Quality and Soil Environment in Mining Areas Based on the Internet of Things

Heavy metals in soils of Mayabeque, Cuba: multifaceted and hardly discernable contributions from pedogenic and anthropogenic sources

Preliminary characterization and probabilistic risk assessment of microplastics and potentially toxic elements (PTEs) in garri (cassava flake), a common staple food consumed in West Africa

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