The current status of heavy metal pollution and treatment technology development in China

Wang, Jianlong; Chen, Can

doi:10.1080/21622515.2015.1051136

Cited by 42 publications

(11 citation statements)

References 23 publications

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“…Per clinical standards, patients are termed at risk if their UCd levels are higher than 5.000 μg/g cr. In our study, the median UCd value for both male or female participants was higher than the national standard threshold value (5 μg/g cr) recommended by GOMOHC in 2010 [31].…”

Section: Demographic Informationcontrasting

confidence: 75%

An assessment of sensitivity biomarkers for urinary cadmium burden

Wang

et al. 2020

BMC Nephrol

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Background: Excess cadmium (Cd) intake poses a general risk to health and to the kidneys in particular. Among indices of renal dysfunction under Cd burden measures are the urinary N-acetyl-β-D-glucosidase (UNAG) and urinary β 2-microglobulin (Uβ 2-MG) enzymes. However, the end-pointed values and the Cd burden threshold remain controversial because the scopes fluctuate widely. Methods: To ascertain the clinical benchmark dose of urinary Cd (UCd) burden for renal dysfunction, 1595 residents near a Cd site were surveyed. Urine was sampled and assayed. A benchmark dose low (BMDL) was obtained by fitting UCd levels and index levels. Results: We found that over 50% of the subjects were suffering from Cd exposure as their UCd levels far exceeded the national standard threshold of 5.000 μg/g creatinine (cr). Further analysis indicated that Uβ 2-MG was more sensitive than UNAG for renal dysfunction. The BMDL for UCd was estimated as 3.486 U/g cr (male, where U is unit of enzyme) and 2.998 U/g cr (female) for UNAG. The BMDL for Uβ 2-MG, which is released into urine from glomerulus after Cd exposure, was found to be 2.506 μg/g cr (male, where μg is the unit of microglobulin) and 2.236 μg/g cr (female). Conclusions: Uβ 2-MG is recommended as the sensitivity index for renal dysfunction, with 2.2 μg/g cr as the threshold for clinical diagnosis. Our findings suggest that Uβ 2-MG is the better biomarker for exposure to Cd.

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Section: Demographic Informationcontrasting

confidence: 75%

An assessment of sensitivity biomarkers for urinary cadmium burden

Wang

et al. 2020

BMC Nephrol

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“…Per clinical standards, patients are termed at risk if their UCd levels are higher than 5.000 µg/g cr. In our study, the median UCd value for both male or female participants was higher than the national standard threshold value (5 µg/g cr) recommended by GOMOHC in 2010 [29].…”

Section: Demographic Informationcontrasting

confidence: 74%

An assessment of sensitivity biomarkers for urinary cadmium burden

Wang

et al. 2020

Preprint

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“…The rapid development in today's industrialized world has led to heavy metal pollution problem. Wastewater from non-ferrous metal ore mining and smelting, electroplating and other industrial production process, is an important pollution source of heavy metal (Wang and Chen, 2015;Ning et al, 2011). Also, activities ranging from residential to commercial and then to industrial are at a geometric increase owing to the constant increase in the world population.…”

Section: Introductionmentioning

confidence: 99%

Seasonal assessment of the physico-chemical properties of surface water and sediments in the vicinity of a scrap metal recycling industry in Southwestern Nigeria

Okoya¹,

Elufowoju²,

Adepoju³

et al. 2020

J. Environ. Chem. Ecotoxicol.

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The study assessed the seasonal variations in the physico-chemical properties of surface water and sediments in some villages located around a scrap metal recycling industry in Ile-Ife. This is with a view to monitor the impact of the industry on the quality of surrounding water. The three water bodies (one river, one stream and one pond) identified in the area were sampled every other month for ten months. Water and sediment were sampled from the water bodies and their physico-chemical properties were determined using standard methods. Highest and least pH values: 7.15 ± 0.29 and 6.27 ± 0.26 were recorded in river and pond water sample, respectively during dry season, while the least pH values: 5.64 ± 0.09 were recorded in sediment samples from the river during wet season. Fe in water was highest in pond during dry season with (0.10 ± 0.01) mg/L. Stream sediment recorded higher values of Fe (1.02 ± 0.05) mg/kg, Zn (0.48 ± 0.01) mg/kg and Pb (0.09 ± 0.01) mg/kg than in stream water samples, while the values of pH, Mn, Cd and Cr (6.95 ± 0.03, 0.67 ± 0.11, 0.11 ± 0.02, 0.17 ± 0.03)mg/L respectively in stream water were higher than in stream sediment samples. In River, Fe and Zn values were higher in sediment (0.63 ± 0.04 and 0.52 ± 0.01)mg/kg respectively than in water samples, while in the pond pH, Mn, Cd and Cr were higher in water (6.51 ± 0.12, 0.71 ± 0.07, 0.09 ± 0.01 and 0.22 ± 0.03)mg/L respectively than in sediment samples. The study concluded that the scrap metal recycling industry has impact on the surrounding water bodies as the values of cadmium, lead and iron significantly exceeded the national and international standards.

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The current status of heavy metal pollution and treatment technology development in China

Cited by 42 publications

References 23 publications

An assessment of sensitivity biomarkers for urinary cadmium burden

An assessment of sensitivity biomarkers for urinary cadmium burden

An assessment of sensitivity biomarkers for urinary cadmium burden

Seasonal assessment of the physico-chemical properties of surface water and sediments in the vicinity of a scrap metal recycling industry in Southwestern Nigeria

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