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Open acid dissolution—Ammonia solution extraction—ICP OES rapid determination of 7 trace metal elements in soil

To overcome the corrosion of hydrofluoric acid on the ICP OES injection system in the acid dissolution system, this paper makes some improvements based on the traditional open digestion. The improved method does not require the complete removal of hydrofluoric acid. After appropriate digestion of th...

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Autores principales: Wang, Jiahan, Long, Junqiao, Yang, Feng, Yang, Xiujin, Jiao, Wenguang, Huang, Cheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10564144/
https://www.ncbi.nlm.nih.gov/pubmed/37816018
http://dx.doi.org/10.1371/journal.pone.0292168
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author Wang, Jiahan
Long, Junqiao
Yang, Feng
Yang, Xiujin
Jiao, Wenguang
Huang, Cheng
author_facet Wang, Jiahan
Long, Junqiao
Yang, Feng
Yang, Xiujin
Jiao, Wenguang
Huang, Cheng
author_sort Wang, Jiahan
collection PubMed
description To overcome the corrosion of hydrofluoric acid on the ICP OES injection system in the acid dissolution system, this paper makes some improvements based on the traditional open digestion. The improved method does not require the complete removal of hydrofluoric acid. After appropriate digestion of the sample with a mixed acid, the solution can be transferred to a colorimetric tube containing ammonium hydroxide solution to give the final volume for analysis. In this paper, two-point standard curves are plotted using soil standards and process blanks, which is not only convenient but also overcomes the interference of the matrix effect. Through continuous experiments, the preferred ratio of mixed acid is 3 mL nitric acid + 5 mL hydrofluoric acid, and the concentration of ammonia solution is 0.5%. The spectral lines of the measured elements V (292.4), Cr (283.5), Co (228.6), Ni (231.6), Cu (324.7), Zn (213.8) and Pb (220.3) were determined. The method quantification limits of the seven measured elements V, Cr, Co, Ni, Cu, Zn and Pb were 0.909, 4.32, 0.269, 0.261, 0.968, 3.69 and 2.64 μg g(-1), respectively, and the precision was 3.5%, 5.2%, 4.8%, 2.4%, 6.1% and 4.5%, respectively. After processing six national standard materials according to the experimental method, the measured values of each measured element were basically in agreement with the certified values, indicating that this method is fully feasible for the measurement of V, Cr, Co, Ni, Cu, Zn and Pb in soil. This method greatly improves the efficiency of pretreatment and is particularly suitable for analysing large batches of samples.
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spelling pubmed-105641442023-10-11 Open acid dissolution—Ammonia solution extraction—ICP OES rapid determination of 7 trace metal elements in soil Wang, Jiahan Long, Junqiao Yang, Feng Yang, Xiujin Jiao, Wenguang Huang, Cheng PLoS One Research Article To overcome the corrosion of hydrofluoric acid on the ICP OES injection system in the acid dissolution system, this paper makes some improvements based on the traditional open digestion. The improved method does not require the complete removal of hydrofluoric acid. After appropriate digestion of the sample with a mixed acid, the solution can be transferred to a colorimetric tube containing ammonium hydroxide solution to give the final volume for analysis. In this paper, two-point standard curves are plotted using soil standards and process blanks, which is not only convenient but also overcomes the interference of the matrix effect. Through continuous experiments, the preferred ratio of mixed acid is 3 mL nitric acid + 5 mL hydrofluoric acid, and the concentration of ammonia solution is 0.5%. The spectral lines of the measured elements V (292.4), Cr (283.5), Co (228.6), Ni (231.6), Cu (324.7), Zn (213.8) and Pb (220.3) were determined. The method quantification limits of the seven measured elements V, Cr, Co, Ni, Cu, Zn and Pb were 0.909, 4.32, 0.269, 0.261, 0.968, 3.69 and 2.64 μg g(-1), respectively, and the precision was 3.5%, 5.2%, 4.8%, 2.4%, 6.1% and 4.5%, respectively. After processing six national standard materials according to the experimental method, the measured values of each measured element were basically in agreement with the certified values, indicating that this method is fully feasible for the measurement of V, Cr, Co, Ni, Cu, Zn and Pb in soil. This method greatly improves the efficiency of pretreatment and is particularly suitable for analysing large batches of samples. Public Library of Science 2023-10-10 /pmc/articles/PMC10564144/ /pubmed/37816018 http://dx.doi.org/10.1371/journal.pone.0292168 Text en © 2023 Wang et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Wang, Jiahan
Long, Junqiao
Yang, Feng
Yang, Xiujin
Jiao, Wenguang
Huang, Cheng
Open acid dissolution—Ammonia solution extraction—ICP OES rapid determination of 7 trace metal elements in soil
title Open acid dissolution—Ammonia solution extraction—ICP OES rapid determination of 7 trace metal elements in soil
title_full Open acid dissolution—Ammonia solution extraction—ICP OES rapid determination of 7 trace metal elements in soil
title_fullStr Open acid dissolution—Ammonia solution extraction—ICP OES rapid determination of 7 trace metal elements in soil
title_full_unstemmed Open acid dissolution—Ammonia solution extraction—ICP OES rapid determination of 7 trace metal elements in soil
title_short Open acid dissolution—Ammonia solution extraction—ICP OES rapid determination of 7 trace metal elements in soil
title_sort open acid dissolution—ammonia solution extraction—icp oes rapid determination of 7 trace metal elements in soil
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10564144/
https://www.ncbi.nlm.nih.gov/pubmed/37816018
http://dx.doi.org/10.1371/journal.pone.0292168
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