Iodine in daily diet samples from some old people's homes in Slovenia

Pokorn, Dražigost; Dermelj, M.; Stibilj, Vekoslava; Gregorič, Barbara

doi:10.1007/s002170050409

Cited by 5 publications

(5 citation statements)

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“…Homogenates were dried at 60°C for 24 h and 900-mg portions were ashed at 450°C in quartz crucibles; the residue was dissolved in 1 N HCl and Cr was measured in the solution by ETAAS. 12 The accuracy of the results was verified by analysis of NBS-8431 Human Diet reference material. The concentration of Cr in NBS SRM Human Diet was found to be 112 Ϯ 11 ng g Ϫ1 , in good agreement with the certified value of 102 Ϯ 6 ng g Ϫ1 .…”

Section: Measured Parametersmentioning

confidence: 87%

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Chromium status of tannery workers in relation to metabolic disorders

Štupar,

Vrtovec,

Kocijančič

et al. 1999

J. Appl. Toxicol.

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Chromium (Cr), being an excellent tanning agent, is widely used in the leather industry. In the process of leather production, tannery workers are exposed to either inorganic Cr(III) compounds or Cr bound to proteins (leather dust). The total Cr content in tannery air (1-54 g m ؊3 ) is rather high in comparison to ambient air (4-6 ng m ؊3 ) but the amount of Cr in inhalable particles (Ͻ10 m) is two to three orders of magnitude less (20-60 ng m ؊3 ). The total daily intake of Cr was estimated by the analysis of diet (24.3 ؎ 4.0 g Cr day ؊1 ), drinking water (0.3 ؎ 0.1 g Cr dm ؊3 ) and ambient air. The contribution of the latter was dominant for tannery workers and almost negligible (8%) for the unexposed population.Chromium is an essential nutrient required for sugar and fat metabolism. The normal dietary intake of Cr for the occupationally unexposed population is found to be suboptimal (Ͻ30 g Cr day ؊1 ) whereas tannery workers receive on average 150-325 g of supplemental Cr day ؊1 . Assessment of the Cr status of both populations was made on the basis of the Cr contents of their scalp hair, pre-shift urine and thermally induced sweat. The median Cr contents in these tissues and fluids were significantly higher (PϽ0.01) in tannery workers (hair: 4 g Cr g ؊1 , urine: Cr/creatinine 1.7 g Cr g ؊1 , sweat: 25 g Cr dm ؊3 ) in comparison with the control group (hair: 0.16 g Cr g ؊1 , urine: Cr/creatinine 0.13 g Cr g ؊1 , sweat: 0.7 g Cr dm ؊3 ). Tannery workers absorbed up to 13 times more Cr in comparison to controls, the amount varying considerably depending on the workplace and duration of exposure. The main route of Cr absorption appears to be through the gastrointestinal tract, where medium to large particles play a dominant role. The absorption of Cr from leather dust may be more efficient in comparison to inorganic Cr(III) compounds. Under normal circumstances sweat Cr losses represent at least 20% of urinary Cr excretion.The incidence of glucose intolerance and disturbed lipid metabolism was compared between the unexposed (control) population (n‫)051؍‬ and a population of tannery workers (n‫)831؍‬ from the same residential area.The percentage of glucose-intolerant subjects was significantly (PϽ0.01) lower in the older subgroup (ageϾ48 years), who were even more obese, but not in the whole tannery population in comparison to controls. In the group of subjects displaying glucose intolerance, those from the control population showed a significantly higher body mass index (BMI) of 32.3 and a considerably larger proportion of females (86%) in comparison to subjects from the tannery population (28.2 and 60%, respectively). There was no significant difference in total serum cholesterol levels between the groups. Results of other lipid variables, such as high-density lipid (HDL) cholesterol, low-density lipid (LDL) cholesterol and triglycerides, are controversial: namely, the HDL/LDL ratio was higher for the controls, who showed in contrast significantly higher serum triglyceride levels in comparison to the older subgr...

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Section: Measured Parametersmentioning

confidence: 87%

“…8 These results seem more promising.Data on the Cr content of diet from various countries suggest that, in general, Cr nutrition is suboptimal. [9][10][11][12] This may be associated with other factors, resulting in the development of metabolic disorders in later life. Chromium (III) salts, being excellent tanning agents, are widely used in tanneries.…”

mentioning

confidence: 99%

Chromium status of tannery workers in relation to metabolic disorders

Štupar,

Vrtovec,

Kocijančič

et al. 1999

J. Appl. Toxicol.

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“…It should be emphasized that the dosage of minerals provided by the diets and OFCs represents the total daily offer of ETE but not their consumption, another limitation pointed out in other studies. 22,30 Thus if the patient does not consume all the foods making up the diet, the nutritional deficit could be correspondingly higher.…”

Section: Mineralsmentioning

confidence: 99%

Evaluation of iron, zinc, copper, manganese and selenium in oral hospital diets

Moreira

Sá

Cerqueira³

et al. 2014

Clinical Nutrition

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“…Elementary iodine is liberated employing a redox reaction with Na 2 SO 3 and NaNO 2 in dilute H 2 SO 4 or HNO 3 . The RNAA procedures developed were employed for the determination of iodine in daily diet samples in Slovenia (Pokorn et al, 1999), Poland (Kunachowicz et al, 2000), in cereal grains in Austria (Shinonaga et al, 2000), in fish samples in Libya (Arafa et al, 2000), in Asian diet samples (Kucˇera et al, 2004;Akhter et al, 2004), and in Polish infant formulae (Osterc et al, 2006), just to give a few recent examples. The chemical yield of separation, mostly in the range of 85-95%, is determined spectrophotometrically or with the aid of the 131 I radiotracer added prior to sample decomposition.…”

Section: Neutron Activation Analysis and Other Nuclear Analytical Tecmentioning

confidence: 99%

Assay of Iodine in Foodstuffs

Kučera¹

2009

Comprehensive Handbook of Iodine

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Iodine in daily diet samples from some old people's homes in Slovenia

Cited by 5 publications

References 0 publications

Chromium status of tannery workers in relation to metabolic disorders

Chromium status of tannery workers in relation to metabolic disorders

Evaluation of iron, zinc, copper, manganese and selenium in oral hospital diets

Assay of Iodine in Foodstuffs

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