Boron adsorption in clay minerals: Implications for martian groundwater chemistry and boron on Mars

Nellessen, M. A.; Gasda, P. J.; Crossey, L. J.; Peterson, Eric D.; Ali, Abdul-Mehdi S.; Zhang, Jin; Zhou, Wen‐Yi; Hao, Ming; Spilde, M.; Newsom, H. E.; Lanza, N.; Reyes‐Newell, A.; Legett, Shelbie A.; Delapp, D.; Yeager, Chris M.; Labouriau, Andrea; Clegg, S. M.; Wiens, R. C.

doi:10.1016/j.icarus.2023.115599

Cited by 3 publications

(4 citation statements)

References 93 publications

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“…65 The negatively charged interlayer sites between sheets of clay minerals favor the attraction of the positively charged Ca-borate cation, which depends on pH and concentration of B. 52 However, it is important to note that previous experiments examining borate adsorption on clay were carried out at considerably higher concentrations of Ca and B compared to the concentrations used in the present study (Tables 2 and S1†). This difference in concentration levels may impact the observed adsorption effects of boron.…”

Section: Discussionmentioning

confidence: 82%

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The corrosion behavior of borosilicate glass in the presence of cementitious waste forms

Katsenovich,

Drozd,

Kandel

et al. 2024

Dalton Trans.

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Section: Discussionmentioning

confidence: 82%

“…The B speciation results, showing the presence of borate and Ca-borate at alkaline pH, are in agreement with previous literature on B speciation in basic conditions. 52,53…”

Section: Resultsmentioning

confidence: 99%

The corrosion behavior of borosilicate glass in the presence of cementitious waste forms

Katsenovich,

Drozd,

Kandel

et al. 2024

Dalton Trans.

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“…Clay minerals in terrestrial dry lake settings are also reported to show presence of B though mineral surface adsorption in relatively high pH aqueous conditions (pH 9-11) (Karahan et al, 2006;Li & Liu, 2020;M. Nellessen et al, 2020;M. A. Nellessen et al, 2023;Rohmah et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Lithium is commonly observed as either adsorbed to the surfaces of clay minerals in the same vicinity as Ca-sulfates (Karahan et al, 2006;Li & Liu, 2020;M. Nellessen et al, 2020;M. A. Nellessen et al, 2023;Rohmah et al, 2020;Warren, 2006) or as lithium chloride in solution of dry lake brines (Song et al, 2017;Xiang et al, 2016) in terrestrial dry lake environments.…”

Section: Introductionmentioning

confidence: 99%

Simulating evaporative wet and dry cycles in Gale crater, Mars using thermochemical modeling techniques.

Turner

Schwenzer

Gasda

et al. 2023

Preprint

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The aim of this work is to understand the formation of primary evaporites—sulfates, borates, and chlorides—in Gale crater using thermochemical modeling to determine constraints on their formation. We test the hypothesis that primary evaporites required multiple wet-dry cycles to form, akin to how evaporite assemblages form on Earth. Starting with a basalt-equilibrated Mars fluid, Mars-relevant concentrations of B and Li were added, and then equilibrated with Gale lacustrine bedrock. We simulated cycles of evaporation followed by groundwater recharge/dilution to establish an approximate minimum number of wet-dry cycles required to form primary evaporites. We determine that a minimum of 250 wet-dry cycles may be required to start forming primary evaporites that consist of borates and Ca-sulfates. We estimate that ~14,250 annual cycles (~25.6 k Earth years) of wet and dry periods may form primary borates and Ca-sulfates in Gale crater. These primary evaporites could have been remobilized during secondary diagenesis to form the veins that the Curiosity rover observes in Gale crater. No LiCl salts form after 14,250 cycles modeled for the Gale-relevant scenario (approximately 106 cycles would be needed) which implies Li may be leftover in a groundwater brine after the time of the lake. No major deposits of borates are observed to date in Gale crater which also implies that B may be leftover in the subsequent groundwater brine that formed after evaporites were remobilized into Ca-sulfate veins.

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Modulate the laser phase to improve the ns-LIBS spectrum signal based on orbital angular momentum

Bao,

Zhao,

Wei

et al. 2024

Opt. Express

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Aiming to enhance the ns-LIBS signal, in this work, we introduced orbital angular momentum to modulate the laser phase of the Gaussian beam into the vortex beam. Under similar incident laser energy, the vortex beam promoted more uniform ablation and more ablation mass compared to the Gaussian beam, leading to elevated temperature and electron density in the laser-induced plasma. Consequently, the intensity of the ns-LIBS signal was improved. The enhancement effects based on the laser phase modulation were investigated on both metallic and non-metallic samples. The results showed that laser phase modulation resulted in a maximum 1.26-times increase in the peak intensities and a maximum 1.25-times increase in the signal-to-background ratio (SBR) of the Cu spectral lines of pure copper for a laser energy of 10 mJ. The peak intensities of Si atomic spectral lines were enhanced by 1.58-1.94 times using the vortex beam. Throughout the plasma evolution process, the plasma induced by the vortex beam exhibited prolonged duration and a longer continuous background, accompanied by a noticeable reduction in the relative standard deviation (RSD). The experimental results demonstrated that modulation the laser phase based on orbital angular momentum is a promising approach to enhancing the ns-LIBS signal.

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Boron adsorption in clay minerals: Implications for martian groundwater chemistry and boron on Mars

Cited by 3 publications

References 93 publications

The corrosion behavior of borosilicate glass in the presence of cementitious waste forms

The corrosion behavior of borosilicate glass in the presence of cementitious waste forms

Simulating evaporative wet and dry cycles in Gale crater, Mars using thermochemical modeling techniques.

Modulate the laser phase to improve the ns-LIBS spectrum signal based on orbital angular momentum

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