@article {Almeida:2014:0306-7319:756,
title = "Development of a simple and fast ultrasound-assisted extraction method for trace element determination in tobacco samples using ICP-MS",
journal = "International Journal of Environmental and Analytical Chemistry",
parent_itemid = "infobike://tandf/geac",
publishercode ="tandf",
year = "2014",
volume = "94",
number = "8",
publication date ="2014-06-21T00:00:00",
pages = "756-764",
itemtype = "ARTICLE",
issn = "0306-7319",
eissn = "1369-1619",
url = "https://www.ingentaconnect.com/content/tandf/geac/2014/00000094/00000008/art00002",
doi = "doi:10.1080/03067319.2014.891107",
keyword = "trace elements, tobacco analysis, cigarette",
author = "Almeida and de Andrade and de Gois and Borges",
abstract = "The current study describes a simple and fast method for the determination of Ba, Cd, Co, Cr, Cu, Mn, Ni and Pb in tobacco samples. Commercial cigarettes obtained from local market stores were analysed by inductively coupled plasma mass spectrometry (ICP-MS) after ultrasound-assisted
extraction in acidic medium, and the results were compared to those obtained following microwave-assisted digestion of the samples. The sonication time was evaluated from 0 to 60 min, and a 30min extraction time was selected. The concentration of HNO3 was also optimised at
0.7molL1. In order to verify the accuracy of the proposed method, a certified reference material was submitted to the same extraction protocol adopted for the samples, and good agreement with the certified values was obtained at a 95% confidence level, except
for Co. The extraction of Pb was also semi-quantitative. A total of four tobacco samples were analysed, with concentrations ranging from 0.4 for Cr to 214.6\textmugg1 for Mn. The proposed method was demonstrated to be fast, sensitive, precise and accurate for
the determination of Ba, Cd, Cr, Cu, Mn an Ni and for the semi-quantitative analysis of Co and Pb in tobacco samples.",
}