An analysis of the potassium concentrations of soft drinks by HPGe gamma spectrometry

Guillermo Espinosa; Ilsa Hernández-Ibinarriaga; Jose-Ignacio Golzarri

doi:10.1007/s10967-009-0139-y

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 282: Issue 2

An analysis of the potassium concentrations of soft drinks by HPGe gamma spectrometry

Authors:

Guillermo Espinosa

Guillermo Espinosa Universidad Nacional Autónoma de México Instituto de Física Apartado Postal 20-364 Mexico City DF Mexico

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Ilsa Hernández-Ibinarriaga

Ilsa Hernández-Ibinarriaga Universidad Nacional Autónoma de México, Circuito de la Investigación Científica, Ciudad Universitaria Facultad de Química Mexico City DF México

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, and

Jose-Ignacio Golzarri

Jose-Ignacio Golzarri Universidad Nacional Autónoma de México Instituto de Física Apartado Postal 20-364 Mexico City DF Mexico

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Pages:: 401–404

Online Publication Date:: 10 Jul 2009

Publication Date:: 01 Nov 2009

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-009-0139-y

Keywords:: Potassium; 40K; Gamma spectrometry; Soft drinks

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Abstract

Potassium, in a variety of compounds, occurs in abundance in the Earth’s crust, and is an essential nutrient for human health. A naturally occurring radioactive isotope of potassium, ⁴⁰K, is found in the food and water that we consume. This paper presents the results of a gamma spectrometry analysis of the ⁴⁰K concentrations of a selection of commercial soft drinks. The ⁴⁰K concentrations are used to calculate the overall potassium concentrations. The analysis was carried out using a hyper-pure germanium (HPGe) detector with Ortec^® ASPEC-927 multichannel analyzer module and GammaVision^® software. This system was chosen for its high resolution and automatic data processing. The carbonated soft drinks (sodas) Coca-Cola^®, Coca-Cola Light^® (sold as Diet Coke^® in the USA and other countries), Coca-Cola Zero^®, Pepsi^®, Pepsi Light^®, Pepsi Max^®, Big Cola^®, Lulu-Cola^®, Manzana Lift^®, Sprite^® and Fanta^® and the mineral waters Ciel^® and Peñafiel^® were analyzed. These brands are all international registered trademarks. The products analyzed were manufactured and bottled in Mexico. The results show a great variety of potassium concentrations in the different soft drinks analyzed (from 128.0 to 1113.1 mg/L). The concentration of potassium in the sodas, in conjunction with the amounts drank by one person in a year (180 L/year), are high enough to warrant consideration by public health authorities and by people to whom high potassium intakes pose a risk.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)