Mercury contamination status of rice cropping system in Pakistan and associated health risks

Aslam, Muhammad; Ali, Waqar; Meng, Bo; Abrar, Muhammad; Lu, Benqi; Qin, Chongyang; Zhao, Lei; Feng, Xinbin

doi:10.1016/j.envpol.2020.114625

Cited by 32 publications

(9 citation statements)

References 109 publications

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“…The mean THg concentration (1.6 µg/kg, range: 1.3-2.4 µg/kg) was far below the Indonesian National Standard. Moreover, this results also lower than other commercial rice reported in Sri Lanka (1.73 µg/kg, range: 0.21-6.13 µg/kg) (Xu et al, 2020), China (4.47 µg/kg, range: 1.06-22.7 µg/kg) (Zhao et al, 2019), Pakistan (4.51 µg/kg, range: 0.44-157 µg/kg) (Aslam et al, 2020), and Cambodia (8.14 µg/kg, range: 6.16-11.7 µg/ kg) (Cheng et al, 2013). It means that commercial rice in Indonesia is still in a safe level based on Indonesian National Standard for THg in cereals.…”

Section: Hg Concentration In Ricecontrasting

confidence: 59%

“…The accumulation of MeHg in hair is mainly from food consumption such as fish and rice, while I-Hg is generally obtained from high level of Hg contamination in the air (Li, 2013;Sheehan et al, 2014). The mean MeHg in hair related to fish consumption in general communities could be higher than the communities living in the contaminated area with low fish consumption (Aslam et al, 2020;Salazar-Camacho et al, 2017). It should be noted that many factors may contribute to the MeHg accumulation status in hair such as age, individual susceptibility, gender, smoking habit, and lifestyle (Marcinek-jacel et al, 2017).…”

Section: Thg and Mehg Concentration In Hairmentioning

confidence: 99%

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The dietary intake of mercury from rice and human health risk in artisanal small-scale gold mining area, Indonesia

Novirsa

Dinh

Jeong

et al. 2020

Fundam. Toxicol. Sci.

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Artisanal and Small Scale Gold Mining (ASGM) contributes as the biggest source of mercury (Hg) emission in Southeast Asian countries including Indonesia. Rice paddies are the most impacted agriculture area caused by Hg emission from ASGM sewage water. It may pose to health risk effect to humans due to the consumption of the rice as the staple food. This study was aimed to evaluate the Hg accumulation in rice and health effect to residents in Lebaksitu ASGM area by analysis of total mercury (THg) and methylmercury (MeHg) in hair. Two villages were selected in this study, Hg hotspot village (Lebak-1) and low Hg exposure village (Lebak-2). The THg concentration in rice ranged from 9.1-115 µg/kg with an average of 32.2 µg/kg. MeHg concentration in rice constituted 14.7-81.8% of the THg. Rice in Lebak-1 had higher THg and MeHg concentrations than those in Lebak-2. The mean THg and MeHg concentration in hair were 3.2 mg/kg and 1.78 mg/kg, respectively. Residents in Lebak-1 had significantly higher THg and MeHg in hair than those collected from Lebak-2. The MeHg ratio to THg in hair varied widely ranged from 15.68-92.43%. There was a significant correlation between high intake of MeHg from rice and the accumulation of MeHg in the hair. It was concluded that rice is the potential source of MeHg exposure to humans through daily consumption in rice consumer countries.

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Section: Hg Concentration In Ricecontrasting

confidence: 59%

Section: Thg and Mehg Concentration In Hairmentioning

confidence: 99%

The dietary intake of mercury from rice and human health risk in artisanal small-scale gold mining area, Indonesia

Novirsa

Dinh

Jeong

et al. 2020

Fundam. Toxicol. Sci.

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“…China is the world's largest producer of rice, and rice is the staple food for majority of the Chinese population, particularly in Southern China. Therefore, PTEs pollution in soil and their subsequent accumulation in these crops, and related health risks of human exposure have been extensively studied around the world [30][31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Predicting Bioaccumulation of Potentially Toxic Element in Soil–Rice Systems Using Multi-Source Data and Machine Learning Methods: A Case Study of an Industrial City in Southeast China

Xie

Zhu³

et al. 2021

Land

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Potentially toxic element (PTE) pollution in farmland soils and crops is a serious cause of concern in China. To analyze the bioaccumulation characteristics of chromium (Cr), zinc (Zn), copper (Cu), and nickel (Ni) in soil-rice systems, 911 pairs of top soil (0–0.2 m) and rice samples were collected from an industrial city in Southeast China. Multiple linear regression (MLR), support vector machines (SVM), random forest (RF), and Cubist were employed to construct models to predict the bioaccumulation coefficient (BAC) of PTEs in soil–rice systems and determine the potential dominators for PTE transfer from soil to rice grains. Cr, Cu, Zn, and Ni contents in soil of the survey region were higher than corresponding background contents in China. The mean Ni content of rice grains exceeded the national permissible limit, whereas the concentrations of Cr, Cu, and Zn were lower than their thresholds. The BAC of PTEs kept the sequence of Zn (0.219) > Cu (0.093) > Ni (0.032) > Cr (0.018). Of the four algorithms employed to estimate the bioaccumulation of Cr, Cu, Zn, and Ni in soil–rice systems, RF exhibited the best performance, with coefficient of determination (R2) ranging from 0.58 to 0.79 and root mean square error (RMSE) ranging from 0.03 to 0.04 mg kg−1. Total PTE concentration in soil, cation exchange capacity (CEC), and annual average precipitation were identified as top 3 dominators influencing PTE transfer from soil to rice grains. This study confirmed the feasibility and advantages of machine learning methods especially RF for estimating PTE accumulation in soil–rice systems, when compared with traditional statistical methods, such as MLR. Our study provides new tools for analyzing the transfer of PTEs from soil to rice, and can help decision-makers in developing more efficient policies for regulating PTE pollution in soil and crops, and reducing the corresponding health risks.

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“…Heavy metal contamination in soil-plant systems has become a severe global concern due to its persistence, bioaccumulation, and toxic effects (Ali et al, 2020). Worldwide in the past five decades, the amount of Chromium (Cr) released into the environment has been assessed at more than 30,000 tons originating from diverse natural and anthropogenic activities, most of which significantly accumulate in industrial and agricultural soil, causing Cr pollution, have become increasingly important (Li et al, 2020;Shahid et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Chromium in polluted agricultural soils accumulates in the crop system; therefore, it carries human risks due to food chain contamination (Ahemad, 2015). Previous studies have reported that Cr contamination of paddy soil-rice systems is extensive in rice-growing countries, including Japan, India, Bangladesh, Iran, China, and Australia (Ali et al, 2020;Arunakumara et al, 2013). Elevated Cr concentrations in the paddy soil system cause increased Cr uptake, translocation, and accumulation, ultimately increasing Cr concentrations in paddy tissues (e.g., roots, shoots, leaves, and rice grains), which can threaten food security by reducing rice yields and quality due to the phytotoxic effects of Cr (Hu et al, 2019;Mahfooz et al, 2020;Shahid et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Chromium contamination in paddy soil-rice systems and associated human health risks in Pakistan

Ali

Zhang

Mao

et al. 2022

Science of The Total Environment

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Mercury contamination status of rice cropping system in Pakistan and associated health risks

Cited by 32 publications

References 109 publications

The dietary intake of mercury from rice and human health risk in artisanal small-scale gold mining area, Indonesia

The dietary intake of mercury from rice and human health risk in artisanal small-scale gold mining area, Indonesia

Predicting Bioaccumulation of Potentially Toxic Element in Soil–Rice Systems Using Multi-Source Data and Machine Learning Methods: A Case Study of an Industrial City in Southeast China

Chromium contamination in paddy soil-rice systems and associated human health risks in Pakistan

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