Basin-scale comprehensive assessment of cadmium pollution, risk, and toxicity in riverine sediments of the Haihe Basin in north China

Zhang, Wenqiang; Zhao, Yu; Zhang, Hong; Shan, Baoqing

doi:10.1016/j.ecolind.2017.06.011

Cited by 25 publications

(10 citation statements)

References 37 publications

(39 reference statements)

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“…Pb, Cd, Cu and Zn concentrations in those samples decreased markedly with increasing distance from the smelting facility in the Wumeng mountain area. This finding has also been observed in other studies of heavy metal contamination in areas surrounding smelting industries [21], and indicates the aeolian dispersion of particles containing heavy metals (Pb, Cd, Cu, and Zn) from such smelters are a source of heavy metal contamination in soils [22–23]. Waste water discharged from the smelting facilities has been used to irrigate surrounding pastures and farmlands and was therefore also a source of heavy metal contamination (Pb, Cd, Cu, and Zn) in the agricultural soils of the study area.…”

Section: Discussionsupporting

confidence: 82%

The effect of heavy metal contamination on humans and animals in the vicinity of a zinc smelting facility

2019

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A diagnosis of heavy metal poisoning in sheep living on pastures in the vicinity of a smelting facility in the Wumeng mountain area of China was based on laboratory tests and clinical symptoms. Furthermore, heavy metal contamination in the food chain was found to have a deleterious effect on the health of local residents. The levels of copper(Cu), zinc(Zn), cadmium (Cd), and lead (Pb) in irrigation water, soil, forages, and animal tissues were measured in samples taken from the vicinity of a smelting facility and control samples. Heavy metal contents in food (corn, rice, and wheat), as well as in human tissues (blood and hair) obtained from local residents were also determined. Hematological values were also determined in human and animal samples. The content of Cu, Zn, Cd, and Pb in irrigation water, soils, and forages were markedly higher in affected areas than in samples from healthy pastures. Concentrations of Cd and Pb were 177.82 and 16.61 times greater in forages than controls, respectively, and 68.71 and 15.66 times greater in soils than controls, respectively. The heavy metal content in food (corn, rice, and wheat) from affected areas was markedly higher than in the control samples. Cd and Pb content in the tissues of affected sheep were markedly higher than in control animals (P < 0.01), while concentrations of Cd and Pb in blood and hair samples from local residents were markedly higher than in control samples (P < 0.01). The occurrence of anemia in affected humans and animals followed a hypochromic and microcytic pattern. The intake of Cd and Pb was estimated according to herbage ingestion rates. It was found that the levels of Cd and Pb which accumulated in sheep through the ingestion of vegetation growing in the sites closest to the smelter were approximately 3.36 and 38.47 mg/kg body wt./day, respectively. Such levels surpassed the fatal dosages for sheep of 1.13 mg Cd/kg body wt/day and 4.42 mg Pb/kg body wt./day. The serum total antioxidant capacity in affected humans and animals was significantly lower than in the controls (P < 0.01). Serum protein parameters in affected humans and animals were significantly reduced (P < 0.01); therefore, it was concluded that heavy metal contamination caused harm to sheep, and also posed a significant risk to humans living in the vicinity of the zinc smelting facility.

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Section: Discussionsupporting

confidence: 82%

The effect of heavy metal contamination on humans and animals in the vicinity of a zinc smelting facility

2019

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“…The lead, cadmium, copper, and zinc concentrations in these samples decreased markedly with increasing distance from the zinc smelter in the Wumeng mountain area. This tendency has been observed in other studies of heavy metal contamination in areas surrounding smelting industries [21] and indicates the aeolian dispersion of particles containing heavy metals (lead, cadmium, copper, and zinc) from these smelters are a source of heavy metal contamination in soils [22–23]. Waste water discharged from the zinc smelter has been used to irrigate surrounding pastures and farmland in the Wumeng mountain area and was therefore also a source of heavy metals (cadmium, lead, copper, and zinc) in the agricultural soils of the study area.…”

Section: Discussionsupporting

confidence: 65%

The effect of heavy metal contamination on human and animal health in the vicinity of a zinc smelter

Shen

Chi

Xiong

2018

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15A diagnosis of heavy metal poisoning in sheep living on pasture in the vicinity of a zinc smelter 16 was made based on laboratory tests and clinical signs in livestock in the Wumeng mountain area 17 of China. Heavy metal contamination has generated serious harm to the health of local farmers 18 after passing through the food chain. The levels of copper, zinc, cadmium, and lead in irrigation 19 water, soil, forages, and animal tissues were measured in samples taken from within the vicinity of 20 a zinc smelter and control samples. Heavy metal concentrations in foods (corn, rice, and wheat) 21 and human tissues (blood and hair) from local farmers living in affected areas and controls were 22 also determined. Hematological values were determined in human and animal samples. The 23 copper, zinc, cadmium, and lead concentrations in irrigation water, soils, and forages were 24 markedly higher than the levels in healthy pastures. Cadmium and lead concentrations were 25 177.82 and 16.61 times greater in forages than controls, respectively, and 68.71 and 15.66 times 26 greater in soils than controls, respectively. Heavy metal concentrations in food (corn, rice, and 27 wheat) in affected areas were markedly higher than in the control samples. Cadmium and lead 28 concentrations in the tissues of affected sheep were markedly higher than in control animals (P < 29 0.01). Cadmium and lead concentrations in blood and hair samples from affected farmers were 30 markedly higher than the control samples (P < 0.01). The occurrence of anemia in affected 31 persons and animals followed a hypochromic and microcytic pattern. The intake of cadmium and 32 lead was estimated according to herbage ingestion rates. It was found that the levels of cadmium 33 and lead accumulated in sheep through the ingestion of vegetation growing in the sites closest to 34 the zinc smelter were approximately 3.36 mg Cd/kg body wt./day and 38.47 mg Pb/kg body 35 wt./day. This surpassed the fatal dosages for sheep of 1.13 mg Cd/kg body wt/day and 4.42 mg 36 Pb/kg body wt./day. Serum total antioxidant capacity in affected humans and animals was 37 significantly lower than in the controls (P < 0.01). The serum protein parameters in affected 38 humans and animals were significantly reduced (P < 0.01). It was therefore concluded that heavy 39 metal contamination has caused serious harm to sheep in this area. The heavy metal 40 concentrations in food and grain also pose a significant risk to human health in the Chinese 41 Wumeng mountain area. 65 China. The area has extensive heavy metal reserves, characterized by large quantities of ores 66 containing zinc, copper, and lead [2]. A large number of industrial enterprises were established for 67 the purpose of lead, zinc, copper, and polymetallic extraction in the 2010s. After a few years of 68 intensive development, metallurgical industries occupied a very wide area of former pasture and 69 farmland [1]. A number of sheep grazing on pastures in the vicinity died after the smelters went 70 into operation. All of the...

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“…For example, high degree of Cd pollution in the riverine sediments of the Haihe Basin and Longjiang River in China has been reported. 2,3 Cd concentrations in rice of some areas were also excessive to the criteria regulated by the Ministry of Health of the People's Republic of China (0.2 mg/kg). 4 Polluted soil area with 20 million hm 2 accounts for about 20 percentage of the Chinese area.…”

Section: Introductionmentioning

confidence: 97%

An Ultrasensitive Colorimetric Strategy for Detection of Cadmium Based on the Peroxidase-like Activity of G-Quadruplex-Cd(II) Specific Aptamer

et al. 2018

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We rationally designed an ultrasensitive and label-free sensing platform for determination of cadmium (Cd). The sensing platform contains G-quadruplex-Cd(II) specific aptamer (GCDSA) constructed by incorporating G-rich sequence at the end of 5′ and the critical domain of the Cd-4 aptamer. GCDSA designed act as both a special recognition sequence for Cd 2+ and a signal DNAzyme. In absence of Cd 2+ , GCDSA may mainly exist in a random coil sequence. Upon addition of Cd 2+ , GCDSA could probably be induced to fold into a G-quadruplex structure. The generation of plentiful active G-quadruplex interacts with hemin to form a peroxidase-like DNAzyme, leading to increased absorbance signal of the sensing system. ΔA was directly proportional to the two segments of concentrations for Cd 2+ , with the detection of limit of 0.15 nM. The proposed method avoids the labeled oligonucleotides and allows directly quantitative analysis of the samples by cheap instruments, with an excellent dynamic range.

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Basin-scale comprehensive assessment of cadmium pollution, risk, and toxicity in riverine sediments of the Haihe Basin in north China

Cited by 25 publications

References 37 publications

The effect of heavy metal contamination on humans and animals in the vicinity of a zinc smelting facility

The effect of heavy metal contamination on humans and animals in the vicinity of a zinc smelting facility

The effect of heavy metal contamination on human and animal health in the vicinity of a zinc smelter

An Ultrasensitive Colorimetric Strategy for Detection of Cadmium Based on the Peroxidase-like Activity of G-Quadruplex-Cd(II) Specific Aptamer

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