ORIGINAL RESEARCH
Development of Inductively Coupled Plasma
Atomic Emission Spectrometry for Arsenic
Determination in Wine
Jelena J. Mutic, Dragan D. Manojlovic, Dalibor Stankovic, Aleksandar Dj. Lolic
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Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
Pol. J. Environ. Stud. 2011;20(1):133-139
KEYWORDS
ABSTRACT
This paper describes a direct method for arsenic determination and speciation in wine samples by
hydride atomic emission spectrometry with inductively coupled plasma (ICP-AES). Optimization of the
method included investigation of several parameters that impact the intensity of spectral lines: concentration
of reaction media (hydrochloric acid), reduction reagent concentration (sodium borhydride), power generator
and the carrier flow rate. The effect of ethanol on spectral lines was especially investigated because it enabled
arsenic determination without prior preparation. Optimal conditions for As(III) were 8 mol/L HCl and 0.1%
NaBH4, for dimethylarsinite (DMA) determination 0.005mol/L HCl and 0.02% NaBH4, and for As(V)
4 mol/L HCl and 2% NaBH4. Total arsenic was determined in samples after their treatment in a microwave
digestion unit. Results were compared to the FIA method, arsenic was determined with the standard addition
method, and the results showed agreement. Detection limits (μg/L) for determination of As(V), DMA, and
As(III) were found to be 0.4, 0.6, and 0.10, respectively. Good recoveries (89.9-102.0%) of added spikes were
obtained for all samples. The proposed method has been validated by means of reference materials and the
results obtained were in agreement with certified values.