Nitric acid and hydrogen peroxide in the digestion of milk and cheeses for the detection of heavy metals

Nitric acid and hydrogen peroxide in the digestion of milk and cheeses for the detection of heavy metals

The content of arsenic (As), cadmium (Cd), copper (Cu), chromium (Cr), lead (Pb) and zinc (Zn) in milk and cheeses was determined, comparing the use of nitric acid and a mixture of nitric acid and hydrogen peroxide (HNO3 + H2O2) in acid digestion. The milk was collected from storage tanks in localities of Huejotzingo and cheeses in Santa Ana Xalmimilulco, Huejotzingo, Puebla. Digestion was carried out in a CEM MarsX microwave. The determination was in an ICP OES. As it showed (p <0.01) when using HNO3 (0.13 mg kg-1) with respect to the mixture. The Cd, Zn and Pb showed (p <0.01), with the use of the mixture with respect to HNO3. The content of Cd, As, Cu and Cr in the cheese there was difference (p <0.01) when using HNO3 compared to the mixture. This shows that there is specificity for metal detection, with HNO3 being the most efficient

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Main Authors: Castro Gonzalez, Numa, Pérez-Sato, Marcos, Soni-Guillermo, Eutiquio, Valencia-Franco , Edgar, Carmona-Victoria, Martín, Calderón-Sánchez , Francisco
Format: Digital revista
Language:spa
Published: Colegio de Postgraduados 2022
Online Access:https://revista-agroproductividad.org/index.php/agroproductividad/article/view/2126
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spelling oai:ojs.pkp.sfu.ca:article21262022-05-16T15:40:40Z Nitric acid and hydrogen peroxide in the digestion of milk and cheeses for the detection of heavy metals Nitric acid and hydrogen peroxide in milk and cheese digestion for the detection of metals Castro Gonzalez, Numa Pérez-Sato, Marcos Soni-Guillermo, Eutiquio Valencia-Franco , Edgar Carmona-Victoria, Martín Calderón-Sánchez , Francisco Heavy metals, acid digestion, contaminated milk, cheeses Acid digestion, Metal contamination in milk, Cheese The content of arsenic (As), cadmium (Cd), copper (Cu), chromium (Cr), lead (Pb) and zinc (Zn) in milk and cheeses was determined, comparing the use of nitric acid and a mixture of nitric acid and hydrogen peroxide (HNO3 + H2O2) in acid digestion. The milk was collected from storage tanks in localities of Huejotzingo and cheeses in Santa Ana Xalmimilulco, Huejotzingo, Puebla. Digestion was carried out in a CEM MarsX microwave. The determination was in an ICP OES. As it showed (p <0.01) when using HNO3 (0.13 mg kg-1) with respect to the mixture. The Cd, Zn and Pb showed (p <0.01), with the use of the mixture with respect to HNO3. The content of Cd, As, Cu and Cr in the cheese there was difference (p <0.01) when using HNO3 compared to the mixture. This shows that there is specificity for metal detection, with HNO3 being the most efficient Objective:  To determine the concentration of arsenic (As), cadmium (Cd), copper (Cu), chromium (Cr), lead (Pb), and zinc (Zn) in milk and cheese by comparing the use of nitric acid (HNO3) and a mixture of nitric acid and hydrogen peroxide (HNO3 + H2O2) in acid digestion. Design/methodology/approach: The milk for the study was collected from storage tanks in various localities of Huejotzingo, and the different types of cheese came from Santa Ana Xalmimilulco, Huejotzingo, Puebla, Mexico. Digestion was carried out in a CEM MarsX microwave. Elemental concentrations were determined by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). Results: The combination of HNO3 + H2O2 in milk digestion resulted in higher concentrations of Cd, Pb, and Zn. Conversely, the concentration of As was higher when using only HNO3 for digestion. No significant differences were found for Cr and Cu between the two digestion methods. In the case of Oaxaca cheese, digestion with HNO3 resulted in higher concentrations of As. Acid digestions did not affect the concentrations of the remaining elements. The same behavior was observed for Ranchero cheese, since the digestion combining HNO3 + H2O2 resulted in lower As concentrations, as compared to the digestion with only HNO3. Pb and Zn were not significantly affected by the treatments, while the concentrations of Cd, Cr, and Cu could not be determined when samples were treated with the HNO3 + H2O2 combination. Limitations: In this work we were able to determine the concentration of a number of metals present in milk and cheese using nitric acid and hydrogen peroxide in acid digestion. However, we recommend more tests are carried out to establish which acid or combination of acids allows for a broader detection of metals. Findings/Conclusions: According to the results obtained in this work, we can conclude that there is specificity for metal detection, with HNO3 being the most efficient. Colegio de Postgraduados 2022-05-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revista-agroproductividad.org/index.php/agroproductividad/article/view/2126 10.32854/agrop.v15i4.2126 AgroP; 2022: EARLY ACCESS (Vol. IV) Agro Productividad; 2022: EARLY ACCESS (Vol. IV) 2594-0252 2448-7546 spa https://revista-agroproductividad.org/index.php/agroproductividad/article/view/2126/1813 Derechos de autor 2022 Agro Productividad
institution COLPOS
collection OJS
country México
countrycode MX
component Revista
access En linea
databasecode rev-agroproductividad-mx
tag revista
region America del Norte
libraryname Departamento de documentación y biblioteca de COLPOS
language spa
format Digital
author Castro Gonzalez, Numa
Pérez-Sato, Marcos
Soni-Guillermo, Eutiquio
Valencia-Franco , Edgar
Carmona-Victoria, Martín
Calderón-Sánchez , Francisco
spellingShingle Castro Gonzalez, Numa
Pérez-Sato, Marcos
Soni-Guillermo, Eutiquio
Valencia-Franco , Edgar
Carmona-Victoria, Martín
Calderón-Sánchez , Francisco
Nitric acid and hydrogen peroxide in the digestion of milk and cheeses for the detection of heavy metals
author_facet Castro Gonzalez, Numa
Pérez-Sato, Marcos
Soni-Guillermo, Eutiquio
Valencia-Franco , Edgar
Carmona-Victoria, Martín
Calderón-Sánchez , Francisco
author_sort Castro Gonzalez, Numa
title Nitric acid and hydrogen peroxide in the digestion of milk and cheeses for the detection of heavy metals
title_short Nitric acid and hydrogen peroxide in the digestion of milk and cheeses for the detection of heavy metals
title_full Nitric acid and hydrogen peroxide in the digestion of milk and cheeses for the detection of heavy metals
title_fullStr Nitric acid and hydrogen peroxide in the digestion of milk and cheeses for the detection of heavy metals
title_full_unstemmed Nitric acid and hydrogen peroxide in the digestion of milk and cheeses for the detection of heavy metals
title_sort nitric acid and hydrogen peroxide in the digestion of milk and cheeses for the detection of heavy metals
description The content of arsenic (As), cadmium (Cd), copper (Cu), chromium (Cr), lead (Pb) and zinc (Zn) in milk and cheeses was determined, comparing the use of nitric acid and a mixture of nitric acid and hydrogen peroxide (HNO3 + H2O2) in acid digestion. The milk was collected from storage tanks in localities of Huejotzingo and cheeses in Santa Ana Xalmimilulco, Huejotzingo, Puebla. Digestion was carried out in a CEM MarsX microwave. The determination was in an ICP OES. As it showed (p <0.01) when using HNO3 (0.13 mg kg-1) with respect to the mixture. The Cd, Zn and Pb showed (p <0.01), with the use of the mixture with respect to HNO3. The content of Cd, As, Cu and Cr in the cheese there was difference (p <0.01) when using HNO3 compared to the mixture. This shows that there is specificity for metal detection, with HNO3 being the most efficient
publisher Colegio de Postgraduados
publishDate 2022
url https://revista-agroproductividad.org/index.php/agroproductividad/article/view/2126
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