Determination of trace elements in aqueous solutions using the EMMA miniprobe XRF analyzer

Cheburkin, A.; Shotyk, William

doi:10.1002/(sici)1097-4539(199909/10)28:5<379::aid-xrs367>3.0.co;2-b

Cited by 8 publications

(1 citation statement)

References 13 publications

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“…Elemental composition analysis was carried out on dried (25 °C) silt + clay samples using two energy dispersive X-ray fluorescence (EMMA-XRF) analysers 68 , 69 hosted at the RIAIDT facility of the Universidade de Santiago de Compostela (USC). This non-destructive technique provided concentration measurements for 10 elements (P, S, Ca, Ti, Mn, Fe, Cu, Zn, Sr, and U; see Table SM 1 for detection limits).…”

Section: Methodsmentioning

confidence: 99%

Approaching mercury distribution in burial environment using PLS-R modelling

Álvarez-Fernández

Cortizas

García-López

et al. 2021

Sci Rep

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Mercury environmental cycle and toxicology have been widely researched. Given the long history of mercury pollution, researching mercury trends in the past can help to understand its behaviour in the present. Archaeological skeletons have been found to be useful sources of information regarding mercury loads in the past. In our study we applied a soil multi-sampling approach in two burials dated to the 5th to 6th centuries AD. PLRS modelling was used to elucidate the factors controlling mercury distribution. The model explains 72% of mercury variance and suggests that mercury accumulation in the burial soils is the result of complex interactions. The decomposition of the bodies not only was the primary source of mercury to the soil but also responsible for the pedogenetic transformation of the sediments and the formation of soil components with the ability to retain mercury. The amount of soft tissues and bone mass also resulted in differences between burials, indicating that the skeletons were a primary/secondary source of mercury to the soil (i.e. temporary sink). Within burial variability seems to depend on the proximity of the soil to the thoracic area, where the main mercury target organs were located. We also conclude that, in coarse textured soils, as the ones studied in this investigation, the finer fraction (i.e. silt + clay) should be analysed, as it is the most reactive and the one with the higher potential to provide information on metal cycling and incipient soil processes. Finally, our study stresses the need to characterise the burial soil environment in order to fully understand the role of the interactions between soil and skeleton in mercury cycling in burial contexts.

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Section: Methodsmentioning

confidence: 99%

Approaching mercury distribution in burial environment using PLS-R modelling

Álvarez-Fernández

Cortizas

García-López

et al. 2021

Sci Rep

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Analysis of waste water by x‐ray fluorescence spectrometry

2002

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Methods of specimen preparation for the x‐ray fluorescence analysis of water are described. For direct determination of impurities in waste water samples, quasi‐solid specimens based on gelatin (agar) are proposed. Such specimens may also be used after extractive enrichment of impurities and their re‐extraction into the aqueous phase. For organic specimens, those in the form of organogels or thin polymer films can be obtained directly. For group impurity concentration it is proposed to use low‐temperature directed crystallization of water with subsequent obtaining of glassy saccharose‐based specimens from aqueous concentrates. The techniques developed were applied to determine Ag, As, Bi, Cd, Co, Cu, Fe, Ga, Ni, Pb, Se and Zn impurities in waste waters. Copyright © 2002 John Wiley & Sons, Ltd.

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Fractionation of Cu, Pb, Cr, and Zn in a Soil Column Amended with an Anaerobic Municipal Sewage Sludge

Egiarte

Corti

Pinto

et al. 2008

Water Air Soil Pollut

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The objective of this study was to investigate the changes in the chemical partitioning of Cu, Pb, Cr and Zn within a column of soil incubated with an anaerobic sewage sludge (ANSS) for 2.5 months. The soil was irrigated during the incubation period. A sequential extraction method was used to fractionate these metals into exchangeable, weakly adsorbed, organic, Al oxide, Fe-Mn oxide, and residual, respectively. ANSS was applied at a loading rate of 69 Mg ha −1 . The soil is a Dystric Cambisol with low pH (<3.8), low CEC [<10 cmol(+) kg −1 below the first 4 cm depth], and low base saturation (<7%). The addition of the ANSS caused a decrease in concentrations of Cu, Pb, and Cr in the A1 horizon, and an increase in the concentrations with depth. Below the A1 horizon, concentrations of Cu increased uniformly (~1 mg cm −1 ), and the greatest increases were observed in the residual, Fe-Mn oxides, and weakly adsorbed fractions. Maximum increases in Pb occurred at 4-9 cm of depth (1.6 mg cm −1 ), and mainly affected the weakly adsorbed fraction. Chromium essentially accumulated at the limit between the A2 and the Bw horizons (1.1-1.5 mg cm −1 ) as residual and organic bound forms, probably through particulate transport. Zinc mainly accumulated in the A1 horizon (2.9 mg cm −1 ) as exchangeable Zn. At depth, Zn increments were predominantly observed in the residual fraction. The results of this study thus demonstrate the redistribution of contaminants into different chemical pools and soil layers after sludge amendment.

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Determination of trace elements in aqueous solutions using the EMMA miniprobe XRF analyzer

Cited by 8 publications

References 13 publications

Approaching mercury distribution in burial environment using PLS-R modelling

Approaching mercury distribution in burial environment using PLS-R modelling

Analysis of waste water by x‐ray fluorescence spectrometry

Fractionation of Cu, Pb, Cr, and Zn in a Soil Column Amended with an Anaerobic Municipal Sewage Sludge

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