Determination of trace concentrations of lead and nickel in freeze-dried human milk by atomic absorption spectrometry and inductively-coupled plasma emission spectrometry

Barnett, Neil W.; Ls, Chen; Kirkbright, G.F.

doi:10.1016/s0003-2670(00)83167-0

Cited by 19 publications

(3 citation statements)

References 6 publications

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“…Gulson et al (2003) revised data (130,110,150,140,120,120,140) were converted to wet weight by applying the factor of 7•5 suggested by Yoshinaga et al (1991). The same data were reported by Barnett et al (1983). from their studies and estimated that the contribution of endogenous Pb to blood-Pb during pregnancy was about 33 %, increasing significantly during the postpartum period.…”

Section: Maternal Constitutional Factors Related To Mercury and Lead supporting

confidence: 80%

Mercury and lead during breast-feeding

Dórea

2004

Br J Nutr

133

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Hg and Pb are of public health concern due to their toxic effects on vulnerable fetuses, persistence in pregnant and breast-feeding mothers, and widespread occurrence in the environment. To diminish maternal and infant exposure to Hg and Pb, it is necessary to establish guidelines based on an understanding of the environmental occurrence of these metals and the manner in which they reach the developing human organism. In the present review, environmental exposure, acquisition and storage of these metals via maternal -infant interaction are systematically presented. Though Hg and Pb are dispersed throughout the environment, the risk of exposure to infants is primarily influenced by maternal dietary habits, metal speciation and interaction with nutritional status. Hg and Pb possess similar adverse effects on the central nervous system, but they have environmental and metabolic differences that modulate their toxicity and neurobehavioural outcome in infant exposure during fetal development. Hg is mainly found in protein matrices of animal flesh (especially fish and shellfish), whereas Pb is mainly found in osseous structures. The potential of maternal acquisition is higher and lasts longer for Pb than for Hg. Pb stored in bone has a longer half-life than monomethyl-mercury acquired from fish. Both metals appear in breast milk as a fraction of the levels found in maternal blood supplied to the fetus during gestation. Habitual diets consumed by lactating mothers pose no health hazard to breast-fed infants. Instead, cows' milk-based formulas pose a greater risk of infant exposure to neurotoxic substances.

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Section: Maternal Constitutional Factors Related To Mercury and Lead supporting

confidence: 80%

Mercury and lead during breast-feeding

Dórea

2004

Br J Nutr

133

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“…Even though many industrial methods for detecting Ni 2+ ions such as atomic absorption/emission spectroscopy,15 liquid chromatography,16 and fluorometric chemosensing,17 provide good sensitivity, they are not suitable for convenient “in‐the‐field” detection, as they normally require expensive instruments and quite often involve tedious sample treatment. Though several Ni 2+ ‐sensitive turn‐on fluorescent sensors have been reported previously,18 many of them, and particularly those bearing electron‐rich fluorophores, exhibit quenching effects upon binding the paramagnetic Ni 2+ ion 19.…”

Section: Introductionmentioning

confidence: 99%

Selective Capture of Ni²⁺ Ions by Naphthalene‐ and Coumarin‐Substituted Dithiolenes

2015

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Naphthalene-and coumarin-substituted dithiolene ligands were synthesized, and their coordination behavior towards different metal ions, including biologically relevant ions like Cu + , Cu 2+, and Fe 3+ , was tested. Both ligands bind nickel selectively and show no evidence of binding any other metal investigated. Particularly, the compound bearing the fluorophore coumarin can serve as a colorimetric ("naked eye") and on-off fluorometric marker for the detection of Ni 2+ ions with a characteristic near-infrared (NIR) signature even in the presence of various transition-metal ions, which are normally difficult to

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“…The U.S. Environmental Protection Agency (EPA) set the lead toxic level in the drinking water as 72.5 nM (15 ppb). 3 Several conventional techniques are available for the determination of lead, including atomic absorption/emission spectrometry, 4,5 inductive coupled plasms mass spectrometry (ICP−MS), 6 high-performance liquid chromatography, 7 and X-ray fluorescence spectrometry. 8,9 These methods are sensitive but have significant drawbacks, such as timeconsuming analysis, complex sample preparation process, well-trained personnel, and costly instruments.…”

Section: ■ Introductionmentioning

confidence: 99%

High-Performance Estimation of Lead Ion Concentration Using Smartphone-Based Colorimetric Analysis and a Machine Learning Approach

et al. 2020

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Traditional methods for detection of lead ions in water samples are costly and time-consuming. In this work, an accurate smartphone-based colorimetric sensor was developed utilizing a novel machine learning algorithm. In the presence of Pb 2+ ions in the solution of specifically functionalized gold nanoparticles, the color of solution turns from red to purple. Indeed, the color variation of the solution is proportional to Pb 2+ concentration. The smartphone camera captures the corresponding color change, and the image is processed by an efficient artificial intelligence protocol. The nonlinear regression approach was used for concentration estimation, in which the parameters of the proposed model are obtained using a new feature extraction algorithm. In prediction of Pb 2+ concentration, the average absolute error and root-mean-square error were 0.094 and 0.124, respectively. The influence of pH of the medium, temperature, oligonucleotide concentration, and reaction time on the performance of the proposed sensor was carefully investigated and understood to achieve the best sensor response. This novel sensor exhibited good linearity for the detection of Pb 2+ in the concentration range of 0.5–2000 ppb with a detection limit of 0.5 ppb.

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Determination of trace concentrations of lead and nickel in freeze-dried human milk by atomic absorption spectrometry and inductively-coupled plasma emission spectrometry

Cited by 19 publications

References 6 publications

Mercury and lead during breast-feeding

Mercury and lead during breast-feeding

Selective Capture of Ni²⁺ Ions by Naphthalene‐ and Coumarin‐Substituted Dithiolenes

High-Performance Estimation of Lead Ion Concentration Using Smartphone-Based Colorimetric Analysis and a Machine Learning Approach

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Determination of trace concentrations of lead and nickel in freeze-dried human milk by atomic absorption spectrometry and inductively-coupled plasma emission spectrometry

Cited by 19 publications

References 6 publications

Mercury and lead during breast-feeding

Mercury and lead during breast-feeding

Selective Capture of Ni2+ Ions by Naphthalene‐ and Coumarin‐Substituted Dithiolenes

High-Performance Estimation of Lead Ion Concentration Using Smartphone-Based Colorimetric Analysis and a Machine Learning Approach

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Product

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Selective Capture of Ni²⁺ Ions by Naphthalene‐ and Coumarin‐Substituted Dithiolenes