Flow injection on-line dilution for zinc determination in human saliva with electrothermal atomic absorption spectrometry detection

Burguera-Pascu, Margarita; Rodríguez-Archilla, Alberto; Burguera, J.L.; Burguera, M.; Rondón, Carlos; Carrero, Pablo

doi:10.1016/j.aca.2006.10.021

Cited by 30 publications

(16 citation statements)

References 28 publications

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“…Zinc is ubiquitous in the body and it is naturally present in saliva [21][22][23][24][25][26][27][28][29][30][31][32][33] and the teeth [34][35][36][37][38] . Table 1 summarises reported background zinc concentrations for saliva.…”

Section: Zinc In the Mouthmentioning

confidence: 99%

“…To exert these effects, it must be present at the site of action at an effective concentration for sufficient time. Accordingly, zinc pharmacokinetic data for both plaque and saliva, following zinc delivery from these vehicles, have been well reported 22,25,[28][29][30][31]44,45,50,56 . Despite differences in experimental protocols, for example different zinc salts, doses and rinsing regimes, all of which may affect zinc delivery and release, some general trends can be discerned.…”

Section: Zinc Applied From Toothpastes and Rinsesmentioning

confidence: 99%

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Zinc in the mouth, its interactions with dental enamel and possible effects on caries; a review of the literature

Lynch

2011

International Dental Journal

133

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Zinc is an essential trace element. In the mouth, it is present naturally in plaque, saliva and enamel. Zinc is formulated into oral health products to control plaque, reduce malodour and inhibit calculus formation. It has good oral substantivity, and elevated concentrations can persist for many hours in plaque and saliva following delivery from mouthrinses and toothpastes. Although low concentrations of zinc can both reduce enamel demineralisation and modify remineralisation, during caries clinical trials, the addition of zinc to fluoride toothpastes has not affected their ability to reduce caries. Mechanistic studies may help explain this apparent contradiction. Zinc is readily desorbed from hydroxyapatite by calcium, which is plentiful in plaque and saliva. Where crystal-growth sites remain occupied by zinc despite this, they may simply be 'over-grown' by remineralisation initiated at unoccupied sites. Further, under certain conditions, low concentrations of zinc can enhance remineralisation of enamel lesions, by retarding lesion arrestment. Although this may help to explain the apparent lack of an overall zinc effect on caries, it seems unlikely that any negative effects would be countered exactly by positive effects. Further mechanistic studies, complementing well-designed in vitro and in situ caries studies, should lead to further understanding of the zinc-enamel interactions relevant to demineralisation and remineralisation.

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Section: Zinc In the Mouthmentioning

confidence: 99%

Section: Zinc Applied From Toothpastes and Rinsesmentioning

confidence: 99%

Zinc in the mouth, its interactions with dental enamel and possible effects on caries; a review of the literature

Lynch

2011

International Dental Journal

133

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“…Numerous health effects like neurological and cognitive development impairments may appear in the case of iron deficiency in early childhood [11]. Due to the high importance of Zn, Cu and Fe for human health, different techniques including atomic absorption spectrophotometer (AAS) [12], ETAAS [13] and ICP-MS [14,15] have been used for the determination of these elements in trace levels.…”

Section: Introductionmentioning

confidence: 99%

Effects of Formaldehyde Inhalation on Zinc, Copper and Iron Concentrations in Liver and Kidney of Male Rats

Özen

Kuş

Bakırdere

et al. 2010

Biol Trace Elem Res

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In the present study, adult Wistar albino male rats were exposed to formaldehyde at different periods (subacute and subchronic) and concentrations (5.0 and 10.0 ppm) in order to figure out the changes in the concentration of Zn, Cu and Fe. It was observed that the formaldehyde inhalation caused gradual decline of body weights in the experimental groups when compared with control groups. It was found that subacute (4-week) or subchronic (13-week) exposure to formaldehyde for rats may cause growth retardation. After inhalation procedure, concentration of copper, zinc and iron were determined in liver and kidney tissues of rats using atomic absorption spectrophotometer. In addition, concentrations of Cu, Zn and Fe changed by the effect of formaldehyde in subacute and subchronic groups.

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“…The problems facing us with zinc cause the determination of zinc in the environment. Already, we have a lot of techniques for the determination of Zn 2+ in the environment such as anodic stripping voltammetry 11, electrothermal atomic absorption spectrometry 12, atomic absorption spectrometry 13, atomic emission spectrometry 13–15, spectrophotometry 16, 17 etc. All these are good for determination of Zn 2+ but these methods are time consuming, require a large infrastructure, expertise, a large number of sample manipulation and high cost.…”

Section: Introductionmentioning

confidence: 99%

Selective Determination of Zn²⁺ Ion in Various Environmental, Biological and Medicinal Plant Samples Using a Novel Coated Graphite Electrode

et al. 2013

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Novel Zn2+ ion‐selective PVC based coated graphite electrodes were fabricated using the ionophores N‐((1H‐indol‐3‐yl)methylene)thiazol‐2‐amine (I1), N‐((1H‐indol‐3‐yl)methyl)‐thiazol‐2‐amine (I2) and 1‐((1H‐indol‐3‐yl)methylene)urea (I3). Their potentiometric performance was examined in dependence of the addition of plasticizers and anion excluders and compared. It is found that the coated graphite electrode with the composition I1:KTpClPB:o‐NPOE:PVC=9 : 1.5 : 51 : 38.5 is the best with respect to the wide working concentration range (4.2×10−8–1.0×10−1 mol L−1), low detection limit (1.6×10−8 mol L−1) and wide pH range of 3.0–8.0. The proposed electrode was successfully applied to quantify Zn2+ in various environmental, biological and medicinal plant samples and used as indicator electrode.

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Flow injection on-line dilution for zinc determination in human saliva with electrothermal atomic absorption spectrometry detection

Cited by 30 publications

References 28 publications

Zinc in the mouth, its interactions with dental enamel and possible effects on caries; a review of the literature

Zinc in the mouth, its interactions with dental enamel and possible effects on caries; a review of the literature

Effects of Formaldehyde Inhalation on Zinc, Copper and Iron Concentrations in Liver and Kidney of Male Rats

Selective Determination of Zn²⁺ Ion in Various Environmental, Biological and Medicinal Plant Samples Using a Novel Coated Graphite Electrode

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Flow injection on-line dilution for zinc determination in human saliva with electrothermal atomic absorption spectrometry detection

Cited by 30 publications

References 28 publications

Zinc in the mouth, its interactions with dental enamel and possible effects on caries; a review of the literature

Zinc in the mouth, its interactions with dental enamel and possible effects on caries; a review of the literature

Effects of Formaldehyde Inhalation on Zinc, Copper and Iron Concentrations in Liver and Kidney of Male Rats

Selective Determination of Zn2+ Ion in Various Environmental, Biological and Medicinal Plant Samples Using a Novel Coated Graphite Electrode

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Product

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Selective Determination of Zn²⁺ Ion in Various Environmental, Biological and Medicinal Plant Samples Using a Novel Coated Graphite Electrode