Determination of Ca, Mg, Fe and Zn partitioning in UHT cow milks by two-column ion exchange and flame atomic absorption spectrometry detection

Pohl, Paweł; Prusisz, Bartlomiej

doi:10.1016/j.talanta.2006.05.030

Cited by 35 publications

(28 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This revealed that lack of calcium supplementation is a common event for the milk produced in the region of Vale do Paraiba. It is known that pasteurization and homogenization process reduce bioavailable calcium in the milk (Battestin, Tacla, Tiboni, Freitas, & Stertz, 2002), since occurring albumina denaturation (to 20%) and loss of colloidal calcium, corresponding to a total loss of approximately 67% o calcium contained in the milk and associated to mycelium and casein generating ion Ca 2+ (Pohl & Prusisz, 2007). Under these circumstances the organism needs to spend the same quantity of calcium to neutralize the acidity and acid mucus generated by milk ingested (Battestin et al, 2002).…”

Section: Resultsmentioning

confidence: 99%

Determination of nutritional and toxic elements in pasteurized bovine milk from Vale do Paraiba region (Brazil)

et al. 2010

View full text Add to dashboard Cite

a b s t r a c tThroughout the year of 2004, 54 samples (1 L each) were collected from commercial sources in the Vale do Paraíba region (eastern portion of São Paulo State, Brazil). The concentrations of (Ca, Cr, Cu, Fe, Mg, Mn, Ni, Se, Zn, Cd and Pb) in these samples were analyzed by two atomic-absorption spectroscopy (AAS) methods. Ca, Cu, Fe, Mg and Zn were determined by flame atomic-absorption spectroscopy (FAAS) and (Cd, Cr, Mn, Ni, Pb and Se) were determined by electrothermal atomic-absorption spectroscopy (ETAAS). Tests to determine and quantify essential, nonessential and toxic elements present in bovine milk are rare in Brazil, especially so for Vale do Paraiba region. Tests were performed on standard NIST-certified milkpowder to validate the reliability of subsequently collected analytical data. Ca presented a lower recovery value (85.3%). The finding for Ca macro-nutrient was found to be below recommended international standards (1300 mg/L) for all samples possibly due to milk heterogeneity and losses in the pasteurization process. Significant results for Pb were found in all milk samples with average values at 0.230 mg/L from a minimum of 0.062 mg/L and maximum of 0.476 mg/L.

show abstract

Section: Resultsmentioning

confidence: 99%

Determination of nutritional and toxic elements in pasteurized bovine milk from Vale do Paraiba region (Brazil)

et al. 2010

View full text Add to dashboard Cite

show abstract

“…The separation, preconcentration and determination processes of trace metal ions from different matrices, especially water samples, are mainly based on the utilization and application of a number of available techniques. These include solid phase extraction (SPE) [17][18][19][20][21][22], co-precipitation [16,23], ion-exchange [24] and flotation, etc. [25].…”

Section: Introductionmentioning

confidence: 99%

Solid phase extraction method for the determination of iron, lead and chromium by atomic absorption spectrometry using Amberite XAD-2000 column in various water samples

Elçi

Kartal

Soylak

2008

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…The loaded sample volume and flow rates were optimised. Optimized flow rates were determined as 1 ml/ min [36][37][38][39][40].…”

Section: +mentioning

confidence: 99%

Fractionation and Speciation of Cu in Different Processing Apricots

Erdoğan¹,

Erdemoğlu²,

Güçer³

2017

J Nutr Food Sci

View full text Add to dashboard Cite

An analytical procedure was proposed to study the operational fraction of Cu in ripe-fresh, sun-dried and sulphited-dried apricots harvested from either treated Bordeaux mixture or unexposed trees. Based on the methods that consists pressurized liquid extraction procedure and solid phase extraction to separate diverse Cu fractions on different sorbents such as Dowex 50Wx8-40 and Amberlite XAD-7, and then flame atomic absorption spectrometry (FAAS) and ion selective electrode were used for off-line determination of Cu concentrations in the effluents obtained.Total copper concentrations in different processing the apricot samples exposed to Bordeaux mixture were 4.58, 4.48 and 4.25 µg/g in ripe fresh, sun-dried, sulphuring-sun drying, respectively. However, Cu concentrations in the organic apricot samples were determined 2.92; 2.97 and 2.25 µg/g. While circa 40-59% of total copper are extractable with water solvent including about 67-68% cationic copper, 25-33% organically bound copper and 26-44% labile in Kabaaşı apricot samples. Besides, while about 27-48% of total copper are extractable with methanol: water solvents containing about 40-23% cationic copper, 60-78% organically bound copper and 56-71% of copper was absorbed in the stomach.It was applied to analytical procedures for Cu speciation in the apricot samples were verified and validated.

show abstract

Determination of Ca, Mg, Fe and Zn partitioning in UHT cow milks by two-column ion exchange and flame atomic absorption spectrometry detection

Cited by 35 publications

References 18 publications

Determination of nutritional and toxic elements in pasteurized bovine milk from Vale do Paraiba region (Brazil)

Determination of nutritional and toxic elements in pasteurized bovine milk from Vale do Paraiba region (Brazil)

Solid phase extraction method for the determination of iron, lead and chromium by atomic absorption spectrometry using Amberite XAD-2000 column in various water samples

Fractionation and Speciation of Cu in Different Processing Apricots

Contact Info

Product

Resources

About