Efficiency of two digestion methods in determining the presence of metals (Cd, Cu, Cr, Pb and Zn) in geopropolis produced by Melipona scutellaris

IF 0.2 Q4 CHEMISTRY, MULTIDISCIPLINARY

Revista Colombiana de Quimica Pub Date : 2021-01-01 DOI:10.15446/rev.colomb.quim.v50n2.90293

Josemário Santana Bonsucesso, Andreia Santos do Nascimento, Antônio Leandro da Silva Conceição, Carlos Alfredo Lopes de Carvalho, Fábio de Souza Dias

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引用次数: 1

Abstract

This study evaluates the efficiency of acid extraction and total digestion to determine the presence of metals in geopropolis produced by the stingless bee Melipona scutellaris. Geopropolis samples were collected at five meliponaries in the city and in the metropolitan region of Salvador, Bahia State, Brazil. The sample treatment methods comprised acid extraction and total digestion. The Inductively Coupled Plasma Optical Emission Spectrometry (ICP OES) technique was used to quantify Cd, Cu, Cr, Pb, and Zn. Geopropolis samples submitted to both digestion methods showed statistical differences. For both methods, Cr and Zn showed the highest concentrations, while those of Cd were the lowest. The Cr concentration for determination by total digestion was 37.53 mg/kg, while for acid extraction it was 32.90 mg/kg. For Zn, the concentration was 17.65 mg/kg and 8.85 mg/kg for total digestion and acid extraction, respectively. The total digestion method showed the highest concentrations of the metals evaluated; however, acid extraction (USEPA 3050b) is a more straightforward procedure for metal evaluation in geopropolis samples and presented values that support the use of geopropolis as a bioindicator. The acid extraction method USEPA 3050b, in combination with detection using ICP OES, showed efficiency in analyses carried out to determine metals in geopropolis.

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两种溶出法测定黄竹土工蜂胶中金属Cd、Cu、Cr、Pb、Zn含量的效率

本研究评估了酸提取和总消化的效率，以确定无刺蜜蜂Melipona scutellaris生产的土工蜂胶中金属的存在。在巴西巴伊亚州萨尔瓦多市和大都市区的5个中心收集了土工蜂胶样本。样品的处理方法包括酸萃取和全消化。采用电感耦合等离子体发射光谱法(ICP OES)对Cd、Cu、Cr、Pb、Zn进行了定量分析。土工蜂胶样品提交两种消化方法显示统计差异。两种方法均以Cr和Zn的浓度最高，Cd的浓度最低。全消化法测定Cr的浓度为37.53 mg/kg，酸提取法测定Cr的浓度为32.90 mg/kg。锌的总消化和酸提取浓度分别为17.65 mg/kg和8.85 mg/kg。总消解法测定的金属含量最高;然而，酸萃取(USEPA 3050b)是一种更直接的方法，用于土工蜂胶样品的金属评估，并提供了支持土工蜂胶作为生物指示剂使用的值。酸萃取法USEPA 3050b与ICP OES相结合，对土工蜂胶中的金属进行了高效的分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Revista Colombiana de Quimica CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

1.50

自引率

0.00%

发文量

期刊介绍： The Revista Colombiana de Química - Colombian Journal of Chemistry (Rev. Colomb. Quim.) Is a peer-reviewed scientific journal of the Department of Chemistry, Faculty of Sciences of the Universidad Nacional de Colombia, Bogotá. It currently publishes three volumes per year: January-April, May-August and September-December. All the content published by the Journal (available online) is under a Creative Commons attribution license type BY 4.0, that allows any person or entity in the world to freely access the content, share it, download it, adapt it or make derivative works without any restriction, provided that it adequately indicates the credit to the authors and to the Colombian Journal of Chemistry.