Application of Total Reflection XRF to Elemental Studies of Drinking Water

Barreiros, Maria Alexandra; Carvalho, Luísa; Costa, M. M.; Marques, M. I.; Ramos, M. T.

doi:10.1002/(sici)1097-4539(199707)26:4<165::aid-xrs197>3.0.co;2-p

Cited by 37 publications

(10 citation statements)

References 2 publications

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“…With old lead pipes the Pb concentration in drinking water can reach values 10 times higher than the maximum allowed value, which is 10 µg l 1 , as has been reported previously. 17 Although some differences in the Fe content in the teeth among the two groups of subjects could be found, no definite behaviour is apparent for this element. Table 1.…”

Section: Resultsmentioning

confidence: 92%

Human teeth elemental profiles measured by synchrotron x‐ray fluorescence: dietary habits and environmental influence

et al. 2001

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This paper reports on the measurements of elemental profiles in teeth collected from two different populations, both living in isolated Portuguese islands of the Azores: S. Miguel and Terceira. Both populations are good producers of cattle, in spite of the proximity of the sea. The purpose of this work was to establish the influence of basic diet, based on meat, fish and dairy products, on teeth elemental content. Moreover, for a few elements, the differences between concentrations in corresponding regions of teeth was correlated with the proximity of the sea for the subjects of one of the islands. An x-ray fluorescence set-up with microprobe capabilities, installed at the LURE synchrotron (France), was used for elemental determination. The resolution of the synchrotron microprobe was 100 µm and the energy of the incident photons was 18 keV. Concentration profiles of Fe, Cu, Zn, Br, Sr and Pb in different parts of a tooth are discussed and correlated for both populations. The teeth collected for both populations show a similar behaviour with respect to the elemental distribution. Mn and Cu occur at low concentrations and they are almost constant in all the studied parts of teeth. The content of Sr is higher in the external enamel while the concentrations of Fe, Zn, Br and Pb increase in the inner part of the teeth. However, the contents of Br and Pb are different in the two populations. Higher levels of both elements were found in Terceira subjects. Moreover, the Sr concentration levels indicate that the diet of the studied individuals is richer in meat than in fish.

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Section: Resultsmentioning

confidence: 92%

Human teeth elemental profiles measured by synchrotron x‐ray fluorescence: dietary habits and environmental influence

et al. 2001

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“…The elemental composition of water depends on many factors: the geomorphology and the release of metals into rivers; pesticides and industrial waste play an important role in water contamination [14]. The water quality is defined by law, which stipulates the maximum allowed concentration levels [15].…”

Section: Beam Guidesmentioning

confidence: 99%

Total reflection X-ray fluorescence analysis of river waters in its stream across the city of Cordoba, in Argentina

Valentinuzzi

Sánchez

Abraham

2006

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…Different types of water, e.g. drinking, mineral, rain, river, and ground waters, can be analyzed by using TXRF directly or after filtration and acidification. For sea and waste waters, a direct TXRF analysis is difficult because of the high contents of the salt matrix and organic substances, so before TXRF, the preconcentration or dilution procedures are recommended.…”

Section: Introductionmentioning

confidence: 99%

Study of factors affecting the results of natural water analyses by total reflection X‐ray fluorescence

2013

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The study aims to choose the conditions for the direct analysis of different types of natural water samples by total reflection X-Ray fluorescence spectrometry (TXRF). The effect of some factors on TXRF results was studied such as the surface density of dried water residue on the sample carrier, the dilution ratio of high-mineralized samples with ultrapure water and the solution of the detergent Triton X-100, the salt contents, the internal standard concentration, and repeated pipetting of an aliquot of fresh water. The influence of self-absorption phenomena on quantification results was demonstrated by using brine samples. The TXRF results for natural waters of varying salinity (brines, fresh waters, and ground waters) and model solutions are presented. For a number of analytes, the data obtained by TXRF were compared to those obtained by 'wet' chemistry and inductively coupled plasma mass spectrometry.

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Application of Total Reflection XRF to Elemental Studies of Drinking Water

Cited by 37 publications

References 2 publications

Human teeth elemental profiles measured by synchrotron x‐ray fluorescence: dietary habits and environmental influence

Human teeth elemental profiles measured by synchrotron x‐ray fluorescence: dietary habits and environmental influence

Total reflection X-ray fluorescence analysis of river waters in its stream across the city of Cordoba, in Argentina

Study of factors affecting the results of natural water analyses by total reflection X‐ray fluorescence

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