Evaluation and distribution of lead (Pb) in different parts of ipomea potatoes. (2018)
- Authors:
- Autor USP: IZÁRIO FILHO, HÉLCIO JOSÉ - EEL
- Unidade: EEL
- Subjects: BATATA-DOCE; LEAD
- Keywords: ICP; evaluation and distribution; Ipomea Potatoes
- Language: Inglês
- Abstract: Sweet potato (Ipomea potatoes), a dicotyledon of the Convolvulaceae family, is a world-grown vegetable, the world's seventh largest food crop being produced worldwide (FAO, 2016). Thus, it is understood that studies that describe the elemental inorganic constituents of the different genotypes that may cause food poisoning in the human diet and understand its distribution in the parts that constitute the vegetable in terms of branch (aerial part) and root. Therefore, the present study has the objective of analyzing the levels of lead (Pb) in root and branch samples of three different genotypes and widely cultivated in the Northwest Region of Rio Grande do Sul (Brazil). Two procedures of sample opening by wet (royal water and nitroperchloric mixture) were evaluated. Samples were obtained from family farming properties, in a total of 95 samples between branch and root. The determination of the Pb contents were quantified in the Optical Emission Spectrometer with Inductively Coupled Plasma (ICP-OES), model Optima DV 4300 of Perkin Elmer, with possibility of using the plasma in the axial and radial configuration mode. The instrumental conditions were pre-optimized prior to determination. Through the quantification, it can be observed that the Pb content in shoot and root of the sweet potato are similar, presenting concentrations of 6535.4 ± 26.6 mg Pb kg-1 and 6569.4 ± 33.5 mg Pb kg-1, respectively for digestion in royal water. By using nitroperchloric digestion, it was observed that Pb values fluctuated, for shoot and root, in 6517,023 ± 30,032 mg Pb kg-1 and 6531,491 ± 51,054 mg Pb kg-1, respectively. In terms of contents, it can be seen that the concentrations obtained are greater than 1000 times the maximum limit allowed by CODEX STAN 193-1995 which establishes that the tolerance levels do not exceed 0.3 mg kg -1 and 0,1 mg kg-1 for shoot and root, respectively.The three genotypes did not express a significant difference in Pb levels. The fact that the element did not vary considerably from one genotype to another infers that the element has a linear availability in the soil. Observing digestion methodologies, a p- value of 0.006513924 was tested for root samples by t-test and a p-value of 0.2028371 for the F-test. In the aerial part, the t-test had a p-value of 0.03139929, and in the F-test a p-value of 0.798709. Thus, together with the plant physiology and soil quality factors, the study showed that, regardless of the digestion method chosen, Pb values did not present statistical differences in relation to the opening procedure and, when compared by interlaboratorial analysis , did not show statistic differences according to the test test F. Thus, for analytical methods of Pb the analyst should consider the economically feasible method and that optimize the process in the laboratory. However, new studies should be done to ascertain the origin and distribution of Pb in the soil and water of the collected regions. In addition, the bioavailability of Pb should be studied in terms of chemical speciation.
- Imprenta:
- Publisher: UDELAR
- Publisher place: Montevideo
- Date published: 2018
- Source:
- Título: 5to Congreso Uruguayo de química Analítica - CUQa5
- Volume/Número/Paginação/Ano: p.59-59
-
ABNT
ERTHAL, Eduardo Santos et al. Evaluation and distribution of lead (Pb) in different parts of ipomea potatoes. 2018, Anais.. Montevideo: UDELAR, 2018. p. 59-59. Disponível em: https://drive.google.com/file/d/189g12uh-drOfgppT6CQj5w4y9CXLWFxB/view. Acesso em: 20 jan. 2026. -
APA
Erthal, E. S., Salasar, T. C. C. de O., Horn, R. C., Izario Filho, H. J., Salazar, L. N., & Salazar, R. F. dos S. (2018). Evaluation and distribution of lead (Pb) in different parts of ipomea potatoes. In 5to Congreso Uruguayo de química Analítica - CUQa5 (p. 59-59). Montevideo: UDELAR. Recuperado de https://drive.google.com/file/d/189g12uh-drOfgppT6CQj5w4y9CXLWFxB/view -
NLM
Erthal ES, Salasar TCC de O, Horn RC, Izario Filho HJ, Salazar LN, Salazar RF dos S. Evaluation and distribution of lead (Pb) in different parts of ipomea potatoes. [Internet]. 5to Congreso Uruguayo de química Analítica - CUQa5. 2018 ;59-59.[citado 2026 jan. 20 ] Available from: https://drive.google.com/file/d/189g12uh-drOfgppT6CQj5w4y9CXLWFxB/view -
Vancouver
Erthal ES, Salasar TCC de O, Horn RC, Izario Filho HJ, Salazar LN, Salazar RF dos S. Evaluation and distribution of lead (Pb) in different parts of ipomea potatoes. [Internet]. 5to Congreso Uruguayo de química Analítica - CUQa5. 2018 ;59-59.[citado 2026 jan. 20 ] Available from: https://drive.google.com/file/d/189g12uh-drOfgppT6CQj5w4y9CXLWFxB/view - Consumo hídrico de calla lily submetida ao manejo de irrigação via solo e teores de cobre
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