Lidia Kim, Alina-Maria Muresan, Adriana Cuciureanu, Doina Guta, Madalina Arama,
Nicolae Ionut Cristea, Violeta Dediu
Conference: International Symposium “The Environment and the Industry”
Date: September 28-29, 2017
Location: Bucharest, Romania
Published: 2017
Experimental models
Heavy metals
Industrial waste
Microwave digestion


In the present paper we report, a series of experimental characterization and analysis models that can be applied to industrial waste samples in order to determine the heavy metals within them. During our studies we determined that both preparation and pretreatment of the waste sample are the two most important steps in the analysis process. Therefore, an increased attention was given in using appropriate procedures and methods for preparation and pretreatment. In order to ensure a correct and secure analysis were developed experimental models based on preparation and pretreatment
stages and also on organic matrix decomposition method (digestion process with acid mixture under microwave). These experimental models were tested on a series of wastes coming from processing and finishing activities of metal surfaces and other
materials. Metal concentration was analyzed by AAS (atomic absorption spectrometry) and XRF (X-ray fluorescence spectrometry). The obtained results
proved that the proposed experimental models are suitable for analysis of different types of industrial wastes samples.

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