Spatial distribution of heavy metals and their potential sources in the soil of Yellow River Delta: a traditional oil field in China

Miao, Xiongyi; Hao, Ying; Zhang, Fawang; Zou, Shengzhang; Ye, Siyuan; Xie, Zhouqing

doi:10.1007/s10653-018-0234-5

Cited by 41 publications

(25 citation statements)

References 61 publications

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“…Data for 2000–2018 are from Zeng et al ( 14 ). Data for 2019–2020 are compiled from Ali et al ( 35 ), Chai et al ( 36 ), Chen et al ( 37 ), Guan et al ( 38 ), Guo et al ( 39 ), Han et al ( 40 ), Hou et al ( 41 ), Hu et al ( 42 ), Huang et al ( 43 ), Jiang and Guo ( 44 ), Jin et al ( 45 ), Jin et al ( 46 ), Lu et al ( 47 ), Lv and Sun ( 48 ), Song et al ( 49 ), Wang et al ( 50 ), Wu et al ( 51 ), Xiao et al ( 52 ), Yang et al ( 53 ), Zhao et al ( 54 ), Zhou et al ( 55 ), Bao et al ( 56 ), Cao et al ( 57 ), Chai et al ( 58 ), Cheng ( 59 ), Duan et al ( 60 ), Guo et al ( 61 ), He et al ( 62 ), Hu et al ( 63 ), Ji et al ( 64 ), Kuerban et al ( 65 ), Li et al ( 66 ), Ma et al ( 67 ), Miao et al ( 68 ), Peng et al ( 69 ), Shi et al ( 70 ), Su and Yang ( 71 ), Sun et al ( 72 ), Tan et al ( 73 ), Tang et al ( 74 ), Wei et al ( 75 ), Xiao et al ( 76 ), Zhang et al ( 77 ), Zhang et al ( 78 ), Zhao et al ( 79 ), Zhuang et al ( 80 ).…”

Section: The Impact Of Pollution On Food Safety In Chinamentioning

confidence: 99%

Pollution-Induced Food Safety Problem in China: Trends and Policies

Zhu

Lei

et al. 2021

Front. Nutr.

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Based on systematic literature study and policy document analysis, this paper investigates the environmental pollution-induced food safety problem in China, including the impact of environmental pollution on food safety and the policy response of Chinese government since 1970's. The results show that, to different degrees, food safety of China is affected by large but inefficient chemical fertilizer and pesticides residue (although the consumption began to decline after around 2015), cropland heavy metal pollution (especially cadmium), water pollution, and high ozone concentration. The evolution of pollution-induced food safety policies of China can be divided into four stages, i.e., preparation stage (1974–1994), construction stage (1995–2005), elaboration stage (2006–2013), and intensification stage (2014–). Through the four stages, the increasingly stringent policy system has been featured by “from supply-safety balance to safety first,” “from multi-agency management to integrated management,” and “from ex post supervision to ex ante risk control.” To further prevent pollution and control food quality, more collaborations between the agricultural and environmental agencies and more specific policies should be anticipated.

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Section: The Impact Of Pollution On Food Safety In Chinamentioning

confidence: 99%

Pollution-Induced Food Safety Problem in China: Trends and Policies

Zhu

Lei

et al. 2021

Front. Nutr.

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“…In recent years, strict restrictions on sewage discharging have been enforced in these waterways to restore their ecology and secure water quality, such that a great improvement of water quality was confirmed in a previous study that found that the HM content in water is significantly superior to the primary standard of surface water quality [39]. However, the ubiquitous contamination of Cr, Cd, and Zn among fish disclosed in recent studies highlights the potential HM bioaccumulation from sediments [36][37][38]. The drastic precipitation in monsoons may aggravate the fluctuation of water chemistry in the Liujiang River Basin and then significantly elevate the bioconversion of HMs in sediments, which is definitely not conducive to the safety of an aquatic environment.…”

Section: Introductionmentioning

confidence: 99%

“…The annual emission of wastewater is higher than 350 million tons, more than 80% of which come from industrial operations related to the metal smelting, chemical, foods, and paper industries [36,37]. The wastewater discharging into the watershed of Liujiang River eventually converges into Liujiang River and its tributary of Luoqingjiang River, which makes metals become the main pollutants in Liujiang River and Luoqingjiang River [36][37][38]. In recent years, strict restrictions on sewage discharging have been enforced in these waterways to restore their ecology and secure water quality, such that a great improvement of water quality was confirmed in a previous study that found that the HM content in water is significantly superior to the primary standard of surface water quality [39].…”

Section: Introductionmentioning

confidence: 99%

The Variation of Heavy Metals Bioavailability in Sediments of Liujiang River Basin, SW China Associated to Their Speciations and Environmental Fluctuations, a Field Study in Typical Karstic River

Hao¹,

Miao

Liu

et al. 2021

IJERPH

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The bioavailability of heavy metals (HMs) in sediments is closely related to the security of the aquatic environment, but their impacts are poorly researched, particularly in karstic rivers. Therefore, Liujiang River Basin was taken as an example in this study. Seven HMs were analyzed to determine the bioavailability and speciations of HMs in sediments. Moreover, the impacts of environmental factors on HMs were identified. The obtained results suggested that HMs in the sediments are all within their permissible exposure limit (PEL), but Cd and Zn are significantly higher than the soil baseline. Most HMs were found to be in a residual fraction, while their exchangeable fraction was found to be in an extremely low ratio. HMs in bioavailable parts are significantly higher than in the exchangeable and carbonate-bound phases but lower than in the non-residual phase, which demonstrated that HM bioavailability is not confined to the exchangeable and carbonate-bound phases. The correlation coefficients commonly decreased with decreasing speciation ratios, which suggested that the overall bioavailability of metals should be determined by speciation ratios instead of speciations themselves. Noteworthily, most HMs in the residual form were found to be significantly correlated with their overall bioavailability, which highlighted the potential bioavailability of residual form. The non-correlations between pH, electrical conductivity (EC), total dissolved solids (TDS), and HM bioavailability suggested that HMs in the carbonate-bound phase are stable and unsusceptible to environmental variations, while the significant correlations between redox potential (Eh), turbidity, organic matter (OM), main grain size (Mz), and HM bioavailability suggested that HMs in the reducible and oxidizable forms are susceptible to environmental fluctuations. Therefore, the variation of HM bioavailability in karstic rivers is largely regulated by their reducible and oxidizable forms instead of their carbonate-bound form.

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“…12 The concentration of heavy metals in wetlands is high, and the main sources of pollution include crude oil pollution, pesticide and fertilizer, atmospheric deposition and so on. 13,14 Low-grade organisms transport to higher trophic levels through food webs aer ingestion of heavy metals and accumulate in vivo to inuence animal growth, development, reproduction and behavior patterns. [15][16][17] Ultimately, it has adverse effects on the human nervous system, endocrine and hematopoietic systems.…”

Section: Introductionmentioning

confidence: 99%