Evaluation of cadmium levels in bivalve molluscs from Dakhla Bay in south of Morocco from 2012 to 2020. Issue 1 (1st October 2022)

• Record Type: Journal Article
• Authors: Dellal, M; Benbrahim, S; Chatou, Em Ait; Errhaif, A; Benhra, A; Anhichem, M; Bouthir, F; Chfiri, R; Jayed, M; Malki, M
• Is Part Of: IOP conference series. Volume 1090:Issue 1(2022)
• Publication Date: 2022-10-01
• Subjects: bivalve molluscs (LBM) -- cadmium -- shellfish production areas -- Dakhla bay; Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/1090/1/012019
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: The present study illustrates the monitoring results of the assessment of the contamination of 5 species bivalve molluscs by cadmium in shellfish production areas of Dakhla Bay during the period from 2012 to 2020. The analysis of the samples is carried out by mass spectrometry using a mass spectrometer of the kind (ICP-MS). The results of this assessment show a difference in the accumulation of cadmium by species of bivalve molluscs of the two groups, in particular group 2 (burrowing bivalve molluscs) and group 3 (non-burrowing bivalve molluscs). Also, a slight increase in cadmium is noted in the different species of bivalve molluscs filter during the period 2017-2019, in all the shellfish production areas. However, the cadmium levels recorded remain below the toxicity thresholds. A decrease in these levels is clearly detected from the year 2020 in bivalve molluscs from all shellfish production areas of Dakhla bay.