Investigation of arsenic contamination in groundwater using hydride generation atomic absorption spectrometry

Le, Dinh Vu; Giang, Pham Thi Kim; Nguyen, Van Trong

doi:10.1007/s10661-022-10707-3

Cited by 7 publications

(2 citation statements)

References 20 publications

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“…Inorganic arsenic (calcium arsenate, sodium arsenate, and lead arsenate) is widely used in fertilizers to increase crop yield. In recent years, the determination of arsenic species in environmental and industrial sources has become important due to arsenic’s toxic effects on humans [ 10 , 11 ]. As the largest developing country in the world, China’s industry and economy have developed rapidly in the past 40 years.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Soil Heavy Metal Pollution and Health Risks in Different Functional Areas on the Northern Slope of the Eastern Tianshan Mountains in Xinjiang, NW China

Asaiduli

Abliz

Abulizi

et al. 2023

IJERPH

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In typical semi-arid areas, the timely and effective monitoring and evaluation of soil heavy metal pollution are of critical importance to prevent soil deterioration and achieve the sustainable use of soil resources. To further understand the degree of soil heavy metal pollution in different functional areas, we studied the soil heavy metal pollution on the northern slope of the eastern Tianshan Mountains in Xinjiang. We collected 104 surface soil samples from typical commercial (A), industrial (B), and agricultural (C) areas with different land-use patterns. The contents of Zn, Cu, Cr, Pb, As, and Hg in the soil of different functional areas were evaluated using the geo-accumulation index, the single-factor pollution index, and potential ecological risk. The results showed that the contents of Pb, As, and Hg in soils of different functional areas exceeded 4.47, 8.03, and 1.5 times the background values of Xinjiang soil, respectively. The average contents of Zn, Cu, and Cr were lower than the background values of Xinjiang soil. Except for As in different functional areas, the contents of the other elements in the different functional areas reached the level of soil environmental quality standards in China (GB15618-2018). The geo-accumulation index of heavy metals in different functional areas was in the order of Area C > Area A > Area B, indicating that Area C was the most polluted. The results of the single-factor pollution index showed that the pollution levels of Pb, As, and Hg were higher, and the pollution levels of Cr, Cu, and Zn were lower. The results of the potential ecological risk index showed that the northwest of Area A was higher, the southeast of Area B was more polluted, and the central and eastern parts of Area C were more polluted. From the perspective of spatial distribution, the spatial distribution characteristics of Zn and Cr elements in different functional areas are consistent, but the spatial distribution characteristics of Cu, Pb, As, and Hg in different functional areas are quite different. The high values of these four elements are mainly distributed in residential areas, factories, and metal smelters. It is necessary to divide the functional areas based on different land-use patterns, and the prevention of soil single-element and heavy metal pollution in different functional areas is reasonable for land resources and provides a scientific basis for the effective planning of quality assurance.

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Section: Introductionmentioning

confidence: 99%

Assessment of Soil Heavy Metal Pollution and Health Risks in Different Functional Areas on the Northern Slope of the Eastern Tianshan Mountains in Xinjiang, NW China

Asaiduli

Abliz

Abulizi

et al. 2023

IJERPH

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show abstract

“…Arsenic is considered one of the most potent metallic pollutants within our water resources. 3 Its harmful characteristics include being nondegradable and nonvolatile, which presents an ongoing threat to human health. Even in minute concentrations, arsenic poses a severe risk.…”

Section: Introductionmentioning

confidence: 99%

Novel Method for the Arsenic Removal Experiment and Mechanism Analysis

Zhu,

Lin,

Fan

2023

ACS Omega

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This study focuses on the hydrothermal synthesis of magnetically activated carbon and its efficacy in As(III) adsorption. The successful incorporation of magnetite nanoparticles within the porous carbon structure was confirmed, enriching the adsorbent's properties. Comprehensive characterization was performed to analyze the pore size distribution, zeta potential at varying pH levels, and thermostability using thermogravimetric analysis. These adsorbents exhibited high As(III) removal efficiency with a uniform pore distribution. The zeta potentials were observed to decrease with an increase in pH, suggesting a relationship between adsorbent charge and pH. Adsorption dynamics were rigorously modeled using pseudo-first-order, pseudo-secondorder, Elovich, and intraparticle diffusion models for different adsorbents labeled as a, b, c, and d. Each adsorbent displayed unique fitted parameters, revealing varied adsorption capabilities. The study further explored the adsorption kinetics and found that the pseudo-second-order kinetics model and the Langmuir model were most appropriate for describing the adsorption process. Adsorption thermodynamics was also fitted to elucidate the underlying adsorption mechanisms. For the a, b, c, and d adsorbents, the pseudo-first-order model, the q e (cal) values for the four adsorbents were 434.2, 418.4, 283.5, and 279.5 μg/g, respectively. Take adsorbent a as an example; the q m values for 298, 303, 308, and 313 K were 702, 673, 605, and 589 μg/g, respectively, and K L values of these temperatures were 0.021, 0.031, 0.018, and 0.009 L/μg, respectively. For the Langmuir model, the R 2 values at the four temperatures were 0.999, 0.978, 0.985, and 0.993, respectively, which indicated that the Langmuir model showed higher fitness. For the Freundlich model, the K L values (L/μg) at the parameters of these temperatures are 432, 409, 328, and 294, respectively. For the Freundlich model, the 1/n values at temperatures of 298, 303, 308, and 313 K are 0.049, 0.045, 0.052, and 0.035, respectively. For the Freundlich model, the R 2 values at parameters of 298, 303, 308, and 313 K are 0.986, 0.989, 0.982, and 0.872, respectively. For the Temkin model, the B values (in J/mol) are 30.93, 0.894, 0.824, and 0.782 at these temperatures, respectively. The K T values (in L/μg) are 1.02 × 10 6 , 0.07 × 10 6 , 0.003 × 10 6 , and 0.002 × 10 6 , respectively. The R 2 values are 0.973, 0.958, 0.972, and 0.894, respectively. In the end, the ΔH, ΔS, and ΔG values for different adsorbents were calculated. Collectively, these findings contribute significant insights into the design and application of magnetically activated carbon adsorbents for effective As(III) removal.

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Nanoporous gold microelectrode for electrochemical sensing of As(III) in cellular environment

Zhuang,

Xu,

Chen

et al. 2023

Analytica Chimica Acta

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Investigation of arsenic contamination in groundwater using hydride generation atomic absorption spectrometry

Cited by 7 publications

References 20 publications

Assessment of Soil Heavy Metal Pollution and Health Risks in Different Functional Areas on the Northern Slope of the Eastern Tianshan Mountains in Xinjiang, NW China

Assessment of Soil Heavy Metal Pollution and Health Risks in Different Functional Areas on the Northern Slope of the Eastern Tianshan Mountains in Xinjiang, NW China

Novel Method for the Arsenic Removal Experiment and Mechanism Analysis

Nanoporous gold microelectrode for electrochemical sensing of As(III) in cellular environment

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