Discrimination of topsoil environments in a karst landscape: an outcome of a geochemical mapping campaign

Hasan, Ozren; Miko, Slobodan; Ilijanić, Nikolina; Brunović, Dea; Dedić, Željko; Miko, Martina Šparica; Peh, Zoran

doi:10.1186/s12932-019-0065-z

Cited by 15 publications

(16 citation statements)

References 47 publications

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“…The Gran approach is endorsed by Dickson et al’s Guide to Best Practice 7 and the US Geological Survey TWRI Book 35 , is commonly used internationally (e.g. 36 – 38 ), and is the only method suitable for all of the four water sources examined in this study 35 . The Gran approach and curve fitting generate similar alkalinity values, often within 0.1% or 1 µmol L −1 (e.g.…”

Section: Methodsmentioning

confidence: 99%

Alkalinity of diverse water samples can be altered by mercury preservation and borosilicate vial storage

Mos

Holloway

Kelaher

et al. 2021

Sci Rep

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We compared the effects of preservation and storage methods on total alkalinity (AT) of seawater, estuarine water, freshwater, and groundwater samples stored for 0–6 months. Water samples, untreated or treated with HgCl2, 0.45 µm filtration, or filtration plus HgCl2, were stored in polypropylene or borosilicate glass vials for 0, 1, or 6 months. Mean AT of samples treated with HgCl2 was reduced by as much as 49.1 µmol kg−1 (1.3%). Borosilicate glass elevated AT, possibly due to dissolving silicates. There was little change in AT of control and filtered samples stored in polypropylene, except for untreated groundwater (~ 4.1% reduction at 6 months). HgCl2 concentrations of 0.02–0.05% reduced the AT of fresh, estuarine, and ground water samples by as much as 35.5 µmol kg−1 after 1 month, but had little effect on the AT of seawater. Adding glucose as a carbon source for microbial growth resulted in no AT changes in 0.45 µm-filtered samples. We suggest water samples intended for AT analyses can be filtered to 0.45 µm, and stored in polypropylene vials at 4 °C for at least 6 months. Borosilicate glassware and HgCl2 can be avoided to prevent analytical uncertainties and reduce risks related to use of Hg2+.

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Section: Methodsmentioning

confidence: 99%

Alkalinity of diverse water samples can be altered by mercury preservation and borosilicate vial storage

Mos

Holloway

Kelaher

et al. 2021

Sci Rep

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show abstract

“…Furthermore, the residual soils on limestone and dolomite might be elevated Hg concentration in karst soil (Gosar et al, 2016). Carbonate-derived soils (elevated Ca and Sr) are poor drainage and leaching, thus it can be stored trace element (Hasan et al, 2020). The transporta- tion of trace elements in soil-derived carbonate can be through the mechanism of zinc carbonate precipitation formation with low solubility and absorption of metals via colloids, clay minerals and hydroxide colloids of iron and manganese.…”

Section: Hg and Pb Distribution In The Soilmentioning

confidence: 99%

Risk identification of Hg and Pb in soil: a case study from Pangkep Regency, Indonesia

Astuti¹,

Mallongi²,

Rauf³

2021

Soil Sci. Ann.

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Lithogenic and anthropogenic activities can increase the concentration of heavy metals in the soil and degradation of environmental quality. Pangkajene dan kepulauan (Pangkep) regency is one of the areas in South Sulawesi Province which has severe environmental pressure. Twenty two surface soils of Pangkajene dan Kepulauan (Pangkep) regency, South Sulawesi, Indonesia were collected in order to determine the contamination status and potential ecological risks. The geo-accumulation index (I geo ) and potential ecological risk index (RI) were used to evaluate the contamination and risk level. The metal content in soils was determined using cold vapor atomic absorption spectrophotometer (CV-AAS) for Hg and fl ame atomic absorption spectrophotometer (F-AAS) for Pb. The results showed that the concentration of Hg and Pb ranged from 20.81-223.47 mg kg -1 and 25.98-108.68 mg kg -1 respectively. Pb concentration in studied soil was below the quality standard for soil, whereas the Hg concentration was exceeded the soil quality standard. Agriculture fi eld in Bungoro sub-district has the highest Hg concentration. The I geo value showed that the soil in Pangkajene was extremely enriched with Hg and moderately enriched by Pb. The ecological risk index showed comprehensively the watershed area was at extreme risk level in need of effective monitoring and pollution control, and Hg is the important risk factor of Pangkajene watershed area.

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“…Karst regions occupy approximately 25 percent of the land surface of the Earth [1][2][3]. Karst groundwater is an important water resource that is used as a drinking and industrial water source by a significant proportion of the world's population [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Niangziguan spring is located in Yangquan City, Shanxi Province. The average annual flow of spring water is 9.8 m 3 •s −1 (1956-2019). Spring water in the Niangziguan spring fields is the main source to supply domestic and industrial water demands in Yangquan City, China.…”

Section: Introductionmentioning

confidence: 99%

Using Isotopic and Hydrochemical Indicators to Identify Sources of Sulfate in Karst Groundwater of the Niangziguan Spring Field, China

Tang

Jin

Yongping

2021

Water

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Karst groundwater in the Niangziguan spring fields is the main source to supply domestic and industrial water demands in Yangquan City, China. However, the safety of water supply in this region has recently suffered from deteriorating quality levels. Therefore, identifying pollution sources and causes is crucial for maintaining a reliable water supply. In this study, a systematic sample collection for the karst groundwater in the Niangziguan spring fields was implemented to identify hydrochemical characteristics of the karst groundwater through comprehensive analyses of hydrochemistry (piper diagram, and ion ratios,) and stable isotopes (S and H-O). The results show that the karst groundwater in the Niangziguan spring fields was categorized as SO4·HCO3-Ca·Mg, HCO3·SO4-Ca·Mg, and SO4-Ca types. K+, Cl-, and Na+ are mainly sourced from urban sewage and coal mine drainage. In addition, SO42− was mainly supplied by the dissolution of gypsum and the oxidation of FeS2 in coal-bearing strata. It is noteworthy that, based on H-O and S isotopes, 75% of the karst groundwater was contaminated by acidic water in coal mines at different degrees. In the groundwater of the Niangziguan spring field, the proportions of SO42− derived from FeS2 oxidation were 60.6% (N50, Chengxi spring), 30.3% (N51, Wulong spring), and 26.0% (N52, Four springs mixed with water). Acid mine drainage directly recharges and pollutes karst groundwater through faults or abandoned boreholes, or discharges to rivers, and indirectly pollutes karst groundwater through river infiltration in carbonate exposed areas. The main source of rapid increase of sulfate in karst groundwater is acid water from abandoned coal mines.

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Discrimination of topsoil environments in a karst landscape: an outcome of a geochemical mapping campaign

Cited by 15 publications

References 47 publications

Alkalinity of diverse water samples can be altered by mercury preservation and borosilicate vial storage

Alkalinity of diverse water samples can be altered by mercury preservation and borosilicate vial storage

Risk identification of Hg and Pb in soil: a case study from Pangkep Regency, Indonesia

Using Isotopic and Hydrochemical Indicators to Identify Sources of Sulfate in Karst Groundwater of the Niangziguan Spring Field, China

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