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Calcium carbide (CaC) is widely used as the low price artificial ripening agent of fruits. It may contain traces of heavy metals which can make fruits harmful for human consumption. This study aimed to assess heavy metals present in commercial-grade CaC and subsequently their quantification in mango peels for the identification of possible marker elements as an indicator of CaC ripening. Samples were prepared by using microwave-assisted digestion followed by multi-elemental quantitative analysis using inductively coupled plasma-mass spectrometry (ICP-MS). In commercial grade CaC samples, the concentrations of analysed metals were found to be in the range of 0.6-540.92 µg/g with given order Fe>Zn>Mn>Cr>Pb>Cu>Ag>As>Ni>Co>Cd. The CaC-treated mango peels showed elevated levels of Fe, Co, As, and Pb in comparison to untreated mango peels ( < 0.05).
This article was published in the following journal.
Name: Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment
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Metals with high specific gravity, typically larger than 5. They have complex spectra, form colored salts and double salts, have a low electrode potential, are mainly amphoteric, yield weak bases and weak acids, and are oxidizing or reducing agents (From Grant & Hackh's Chemical Dictionary, 5th ed)
Conditions associated with damage or dysfunction of the nervous system caused by exposure to heavy metals, which may cause a variety of central, peripheral, or autonomic nervous system injuries.
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A basic element found in nearly all organized tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.
A calcium salt that is used for a variety of purposes including: building materials, as a desiccant, in dentistry as an impression material, cast, or die, and in medicine for immobilizing casts and as a tablet excipient. It exists in various forms and states of hydration. Plaster of Paris is a mixture of powdered and heat-treated gypsum.
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