Isotope investigation of mercury sources in a creek impacted by multiple anthropogenic activities

Jung, Saebom; Kwon, Sae Yun; Hong, Yongseok; Yin, Runsheng; Motta, Laura C.

doi:10.1016/j.chemosphere.2021.130947

Cited by 19 publications

(4 citation statements)

References 64 publications

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“…The emission sources of Hg can be divided into natural and anthropogenic sources [8,9]. However, natural emissions of Hg are only a small fraction compared with those related to human activities [3].…”

Section: Introductionmentioning

confidence: 99%

Persistence of Hg-Contaminated Soil Stabilization in Typical Areas of Dehua County, Fujian Province, China

et al. 2023

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The in-situ stabilization remediation of Hg-contaminated soil in Qianyang, Dehua County, Fujian Province, was studied through the pre-experiments (stabilization orthogonal experiment and pot experiment) and field plot experiments for two consecutive years. The pre-experiments results showed that the main factors of the stabilization were the initial concentration of Hg in the soil and the amount of amendment added, followed by the amendment type, while the aging time had less effect. When the initial concentration of Hg in the soil was less than 10 mg·kg−1 and the amendment (modified biochar with modified attapulgite) added ratio was 0.2–0.4%, indicating optimized stabilization effect. After one-time application of 6750 and 11,250 kg·hm−2 amendment in low (1.38 mg·kg−1), medium (2.46 mg·kg−1), and high (8.52 mg·kg−1) Hg-contaminated soils, it could accelerate the transformation of Hg from exchangeable to residual and oxidizable Hg, enhance the activities of catalase, urease, and invertase in the soil. After one year of remediation, the case of adding 6750 kg·hm−2 amendment showed a significant stabilization effect. Compared to the control group, the available Hg content in the soil and Hg content in the water spinach reduced to 52.1–62.0% and 58.2–66.6%, respectively. When the application amount was increased to 11,250 kg·hm−2, the reduction rates were 43.2–46.0% and 58.2–62.0%, respectively. After two years of remediation, the stabilization effect was weakened, but the available Hg content in the soil and the water spinach was still significantly lower than that of the control, indicating that the persistence of the stabilization was good. For the soil contaminated slightly by Hg, the Hg content in the water spinach within two years was lower than the limit value of the Chinese standard (0.01 mg·kg−1). Although the Hg content in the water spinach for the soil contaminated highly by Hg was higher than the limit value, it could reduce to 67.3%, indicating an acceptable stabilization effect on heavily contaminated soil.

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Section: Introductionmentioning

confidence: 99%

Persistence of Hg-Contaminated Soil Stabilization in Typical Areas of Dehua County, Fujian Province, China

et al. 2023

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“…Therefore, it is important to establish a method to trace Hg emitted from every emission source. A recent technique using stable Hg isotope ratio (δ x Hg) measurements allows identification of the origin of Hg and gaining insight into source identification and apportionment. , The initial δ x Hg values of Hg from every emission source (i.e., the emission inventory accompanied by stable mercury isotopic compositions) are the necessary information for source apportionment analysis. To date, scientists have been making effort to characterize the initial δ x Hg inventory, such as cinnabar mining, − coal combustion, − natural gas production, volcano, Hg in plant and soil, − biomass burning, ocean, and permafrost .…”

Section: Introductionmentioning

confidence: 99%

Stable Isotope Ratios of Mercury in Commercially Available Thermometers and Fluorescent Tubes

Irei

2022

ACS Omega

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Five stable isotope ratios of mercury ( 199 Hg/ 198 Hg, 200 Hg/ 198 Hg, 201 Hg/ 198 Hg, 202 Hg/ 198 Hg, and 204 Hg/ 198 Hg) in commercially available thermometers and fluorescent tubes were analyzed to characterize their potential anthropogenic emission source to landfills, manufacturing factories, and our daily lives. The results for the liquid metal mercury yielded from the thermometers showed similar mass-independent fractionation values to those in the literature. The analysis of fluorescent tubes resulted in that more than 96% of mercury in the fluorescent tubes was found in the adsorbed state, and up to 3.5% of mercury was in the gas-phase. Unique mass-independent isotope fractionation values were found in the gaseous and adsorbed mercury in the fluorescent tubes. This fractionation is distinct from other emission sources and systematic; therefore, it can potentially be used to fingerprint mercury in fluorescent tubes in environmental samples.

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“…water and sediments of the Hyungsan River (Bailon et al 2018), the origins and transport patterns of which were investigated to establish a management plan (Jung et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Use of Pb Isotopes to Track the Sources of Sediment Metals in Youngil Bay, Korea and Offshore

Song¹,

Choi

et al. 2021

Ocean Sci. J.

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Metals contaminating coastal sediments can be transported offshore, which is important to consider when devising management plans. This study investigated whether sediments in Youngil Bay contaminated by metals from industries along the coast were transported offshore. Heavy metals, stable Pb isotopes, and 210 Pb ex were analyzed in six box core samples. Two groups of core samples were distinguished based on their metal profiles and Pb isotopes. Core sediments in the southern region (EC8 ~ EC10) originated from the Nakdong River and Chinese rivers, and admixed with metals from nonferrous refineries in Ulsan Bay. Core sediments in the northeastern region samples (EC11 and B05) were the same as in the inner bay sample (EC12), in terms of both metal enrichment and the Pb isotopes in their upper layers (sediments deposited after 1970). This suggests that Pb isotopes can be used to determine whether contaminants in the inner bay are transported offshore, and where they are transported to.

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Isotope investigation of mercury sources in a creek impacted by multiple anthropogenic activities

Cited by 19 publications

References 64 publications

Persistence of Hg-Contaminated Soil Stabilization in Typical Areas of Dehua County, Fujian Province, China

Persistence of Hg-Contaminated Soil Stabilization in Typical Areas of Dehua County, Fujian Province, China

Stable Isotope Ratios of Mercury in Commercially Available Thermometers and Fluorescent Tubes

Use of Pb Isotopes to Track the Sources of Sediment Metals in Youngil Bay, Korea and Offshore

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