title: Cadmium and lead in seafood from the Aratu Bay, Brazil and the human health risk assessment.
abstract: This study aimed to evaluate cadmium (Cd) and lead (Pb) levels in seafood and perform a risk assessment based on individual food consumption frequency of inhabitants of the Aratu Bay, Brazil. From December 2013 to November 2014, ready-to-market seafood, including fish [pititinga (Lile piquitinga) and small green eel (Gobionellus oceanicus)], mollusks [mussel (Mytella guyanensis) and oyster (Crassostrea rhizophorae)], and crustaceans [white shrimp (Litopenaeus schmitti) and blue crab (Callinectes exasperatus)], were purchased bimonthly from a local artisanal shellfish harvester. Metal levels were analyzed by graphite furnace atomic absorption spectrometry (GFAAS). Based on the volunteer’ seafood consumption, estimates of the non-carcinogenic target hazard quotients (THQs) were calculated. The annual concentrations (μg/g, w/w) of Cd were 0.007 (±0.001) in crustaceans, 0.001 (±0.0003) in fish, and 0.446 (±0.034) in mollusks. Lead levels were <limit of detection (LOD) in crustaceans, 0.044 (±0.0032) in fish, and 0.111 (±0.009) in mollusks. All values were within the international guidelines. We observed that 90.9 % of the responders presented an average THQ < 1, which is classified as negligible risk; however, 9.1 % presented THQs between ≥1 and <9.9. These data are important to inform the community of the imminent exposure risk through communication strategies, with the purpose of minimizing exposure and, consequently, the health effects associated with it.
authors.forename: Cecilia Freitas
authors.initials: CF
authors.lastname: Silva da Araújo
authors.forename: Mariângela Vieira
authors.initials: MV
authors.lastname: Lopes
authors.forename: Mirian Rocha
authors.initials: MR
authors.lastname: Vaz Ribeiro
authors.forename: Thiago Santos
authors.initials: TS
authors.lastname: Porcino
authors.forename: Amanda Santos
authors.initials: AS
authors.lastname: Vaz Ribeiro
authors.forename: Juliana Lima Gomes
authors.initials: JL
authors.lastname: Rodrigues
authors.forename: Sérgio Soares
authors.initials: SS
authors.lastname: do Prado Oliveira
authors.forename: José Antonio
authors.initials: JA
authors.lastname: Menezes-Filho
mesh_terms: D000818:Animals; D061006:Bays / Q000737:chemistry; D001938:Brazil; D002104:Cadmium / Q000032:analysis* / Q000378:metabolism; D003445:Crustacea; D004781:Environmental Exposure / Q000706:statistics & numerical data*; D004784:Environmental Monitoring; D005399:Fishes; D005506:Food Contamination / Q000032:analysis / Q000706:statistics & numerical data; D006801:Humans; D007854:Lead / Q000032:analysis* / Q000378:metabolism; D008628:Mercury / Q000032:analysis; D008974:Mollusca; D018570:Risk Assessment; D017747:Seafood / Q000032:analysis* / Q000706:statistics & numerical data; D012758:Shellfish / Q000032:analysis; D013054:Spectrophotometry, Atomic
chemical_list: D002104:Cadmium; D007854:Lead; D008628:Mercury