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Atomic Spectroscopy

Direct Determination of Cadmium, Lead, and Zinc in Mussels by Two-Stage Probe Atomization (TPA) Graphite Furnace Atomic Absorption Spectrometry (GFAAS)

ORCID Icon, , &
Pages 2293-2303 | Received 14 Aug 2020, Accepted 24 Nov 2020, Published online: 11 Dec 2020
 

Abstract

Seafood consumption may induce health risks due to its contamination by pollutants. In this study, the two-stage probe atomization technique (TPA) was combined with graphite furnace atomic absorption spectrometry (GFAAS) to develop a novel procedure for determining Cd, Pb and Zn in mussels collected in the Sea of Japan (Russia). The application of TPA eliminated organic matrix interferences during GFAAS determination of heavy metals and allowed significant reduction of the sample pretreatment processes. The procedure involved the formation of a suspension of treated lyophilized mussels that were inserted into graphite furnace. The limits of detection using the optimized conditions were 0.8, 10, and 0.4 ng/g for Cd, Pb, and Zn, respectively. Inductively coupled plasma – optical emission spectrometry (ICP-OES) was employed to characterize the accuracy of the developed technique. The concentrations of heavy metals in Crenomytilus Grayanus mussel tissues from Peter the Great bay did not exceed 8.2, 31 and 475 μg/g for Cd, Pb, and Zn and are considered to have no negative effects upon human health.

Additional information

Funding

This work was funded by the Russian Science Support Foundation (19-74-311).

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