Home > Press > Detection of Little Amounts of Heavy Metals in Food Samples by Nanotechnology
Abstract:
Iranian researchers from University of Tehran succeeded in the production of a nano-sorbent that can measure low concentrations of heavy metals in water and food samples.
Detection of Little Amounts of Heavy Metals in Food Samples by Nanotechnology
Tehran, Iran | Posted on June 2nd, 2015The nano-sorbent has magnetic properties and can be reused. Results of the research have applications in foodstuff industries and water purification.
Heavy toxic metals, including lead and cadmium accumulate gradually in human body, specially in liver and kidney, and they threat the health. Newly-born babies are more in danger due to their immature kidney systems, and they have less resistance to these unnecessary elements.
The aim of the research was to produce magnetic nano-sorbent with appropriate coating and to study its performance in pre-concentration and measurement of very tiny amount of metals in various water and food samples.
The nano-sorbent enables the extraction and separation of the samples in a selective manner. Another advantage of the nano-sorbent is that it does not require the time-consuming centrifuging or separation process and it has high rate and concentration factor. In addition, the particles can be used again after the gathering and modification if necessary.
Separation can be carried out with high accuracy and sensitivity by using the nano-sorbents and this method can be used for the measurement of various metals at high or very low concentrations. This method can also be used in water purification industry and to pre-concentrate or measure various metals in different matrices.
The nano-sorbent has been produced through a simple and cost-effective method.
Results of the research have been published in Journal of AOAC International, vol. 97, issue 6, 2014, pp. 1682-1688.
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