Sources and migration of heavy metals in a karst water system under the threats of an abandoned Pb–Zn mine, Southwest China

2021 ◽  
Vol 277 ◽  
pp. 116774
Author(s):  
Wenjing Qin ◽  
Dongmei Han ◽  
Xianfang Song ◽  
Shaohua Liu
Keyword(s):  
Heavy Metals ◽  
Southwest China ◽  
Water System ◽  
Karst Water ◽  
And Migration

scholarly journals Identification of Contamination Recharge Area of Bribin-Baron Karst Water System, Gunung Sewu, Indonesia

2018 ◽  
Author(s):  
Tjahyo Nugroho Adji ◽  
Eko Haryono ◽  
M Widyastuti ◽  
Sudarmadji
Keyword(s):  
Heavy Metals ◽  
Field Survey ◽  
Water System ◽  
River System ◽  
Research Area ◽  
Karst Water ◽  
Recharge Area ◽  
Potential Recharge ◽  
Underground River ◽  
Urban Activity

This research area is located within the most essential underground river system of Gunung Sewu Karst, Indonesia. Thewater sampling focused on Bribin Cave and Baron Resurgence, where around 300.000 of people depend on this system. Timeserieswater sampling was conducted to assess the contaminant composition within the system. In addition, another objectiveis to identify the possible contamination recharge area of this system.Several samples have been analyzed to identify the contaminations in the underground river. In addition,geomorphological approach and field survey were conducted to describe the potential recharge area of the system includingcatchments of autogenic / allogenic stream and the spatial distribution of sinkholes around the system. Afterwards, thesanitation procedure of waste disposal in the recharge area is also evaluated.The result shows that nitrate, heavy metals, and coli bacteria contaminated some samples over the whole time. Theinvestigation also confirms that there are three possible contaminations of the recharge: (1) urban activity in Wonosari Basin,(2) settlement inside the conical karst, and (3) usage of fertilizer within the karst valley farmland adjacent to the sinkholes.Next, the most intensive source of contamination is the way in which Wonosari City residents dispose their waste withouttreatment into the allogenic river.

scholarly journals Reforestation Impacted Soil Heavy Metal Fractionation and Related Risk Assessment in the Karst Area, Southwest China

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 891
Author(s):  
Qian Zhang ◽  
Guilin Han ◽  
Xingliang Xu
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Ecological Risk ◽  
Southwest China ◽  
Risk Index ◽  
Contamination Factor ◽  
Karst Area ◽  
Risk Assessment Code ◽  
Bcr Sequential Extraction ◽  
Soil Heavy Metals

Human agricultural activities have resulted in widespread land degradation and soil contamination in the karst areas. However, the effects of reforestation after agricultural abandonment on the mobility risks and contamination of heavy metals have been rarely reported. In the present study, six soil profiles were selected from cropland and abandoned cropland with reforestation in the Puding karst regions of Southwest China. The Community Bureau of Reference (BCR) sequential extraction method was used to evaluate the compositions of different chemical fractions of soil heavy metals, including Fe, Mn, Cr, Zn, Ni, and Cd. The total contents of Cr, Ni, Zn, Cd, and Mn in the croplands were significantly higher than those in the abandoned croplands. For all soils, Cr, Ni, Zn, and Fe were mainly concentrated in the residual fractions (>85%), whereas Mn and Cd were mostly observed in the non-residual fractions (>65%). The non-residual fractions of Cd, Cr, Ni, and Zn in the croplands were higher than those in the abandoned croplands. These results indicated that the content and mobility of soil heavy metals decreased after reforestation. The individual contamination factor (ICF) and risk assessment code (RAC) showed that Cd contributed to considerable contamination of karst soils. The global contamination factor (GCF) and potential ecological risk index (RI) suggested low contamination and ecological risk of the investigated heavy metals in the croplands, moreover they can be further reduced after reforestation.

scholarly journals Total and bioaccessible heavy metals in cabbage from major producing cities in Southwest China: health risk assessment and cytotoxicity

RSC Advances ◽  
2021 ◽  
Vol 11 (20) ◽  
pp. 12306-12314
Author(s):  
Mengying Li ◽  
Yishu Qin ◽  
Chengchen Wang ◽  
Kun Wang ◽  
Zhihua Deng ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Health Risk ◽  
Brassica Oleracea ◽  
Health Risk Assessment ◽  
Southwest China

We analyzed the total and bioaccessible concentrations of heavy metals in a popular vegetable cabbage (Brassica oleracea) from producing cities in Yunnan, Southwest China and assessed their health risk based on both bioaccessibility and cytotoxicity.

Impact of intensive mining on the distribution of heavy metals in water and sediment of Anning River, southwest China

2018 ◽  
Vol 19 (1) ◽  
pp. 24-30 ◽  
Author(s):  
Zeming Shi ◽  
Xinyu Wang ◽  
Yue Shi ◽  
Shijun Ni ◽  
Yunzhen Li ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Southwest China ◽  
Water And Sediment

Restoration of karst water system in Jinan, China

2015 ◽  
pp. 647-652
Author(s):  
Juan Zhou ◽  
Liting Xing ◽  
Song Wang ◽  
Huibo Zhuang ◽  
Tongwen Dou ◽  
...  
Keyword(s):  
Water System ◽  
Karst Water

scholarly journals Heavy metals in the organic soil layer of beech forests in Serbia

2005 ◽  
pp. 55-67 ◽  
Author(s):  
Ratko Kadovic ◽  
Olivera Kosanin ◽  
Snezana Belanovic ◽  
Milan Knezevic
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Soil Layer ◽  
Forest Litter ◽  
Organic Soil ◽  
Organic Horizon ◽  
Beech Forests ◽  
Metal Contents ◽  
Level I ◽  
And Migration

During the last decades, forest ecosystems have been strongly exposed to the effect of different harmful pollutants, especially from the atmosphere. Harmful substances from the air, in addition to the direct effect on forest trees, also deposit in the soil, and have an adverse effect on soil chemistry and pedogenetic processes. The results of previous studies in Serbia (Kadovic, Knezevic, 2002, 2004) show some specificities regarding the accumulation and migration of heavy metals in the soil. The highest concentrations were found in the layers of forest litter and in the surface organo-mineral horizons. This paper presents the results of the study of heavy metal contents (Zn, Mn, Cu, Fe, Cd, Pb, Ni and Cr) in the organic horizon (forest litter) of beech forests in Serbia. The study of the heavy metal content in the organic horizon (forest litter) is very significant primarily in the aim of monitoring the trend of their migration through the soil profile and the effect on the soil properties and genesis. The soil quality in beech forests in Serbia was assessed within the Project ICP Forest, Level I, by the methodology UN/ECE-EC, 2000.

Accumulation and migration of heavy metals in soils of the Rostov region, south of Russia

2015 ◽  
Vol 16 (4) ◽  
pp. 1203-1213 ◽  
Author(s):  
Olga S. Bezuglova ◽  
Sergey N. Gorbov ◽  
Svetlana A. Tischenko ◽  
Alexandra S. Aleksikova ◽  
Suleiman S. Tagiverdiev ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Rostov Region ◽  
And Migration ◽  
Heavy Metals In Soils
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