Mercury concentrations in Baja California Sur fish: Dietary exposure assessment

被引：8

作者：

Murillo-Cisneros, Daniela A. ^{[1
]}

Zenteno-Savin, Tania ^{[1
]}

Harley, John ^{[2
]}

Cyr, Andrew ^{[3
]}

Hernandez-Almaraz, Pablo ^{[1
]}

Gaxiola-Robles, Ramon ^{[1
,4
]}

Galvan-Magana, Felipe ^{[5
]}

O'Hara, Todd M. ^{[6
]}

机构：

[1] Inst Politecn Nacl, Ctr Invest Biol Noroeste SC Planeac Ambiental & C, 195 Playa Palo Santa Rita, La Paz 23096, Baja Calif Sur, Mexico

[2] Univ Alaska Southeast, Alaska Coastal Rainforest Ctr, 11175 Auke Lake Way, Juneau, AK 99801 USA

[3] Univ Alaska Fairbanks, Biomed Learning & Student Training, 2141 Koyukuk Dr, Fairbanks, AK 99775 USA

[4] Hosp Gen Zona 1, Inst Mexicano Seguro Social Febrero & Heroes Inde, La Paz 23000, Baja Calif Sur, Mexico

[5] Inst Politecn Nacl, Ctr Interdisciplinario Ciencias Marinas, Av IPN S-N,Apartado Postal 592, La Paz 23000, Baja Calif Sur, Mexico

[6] Texas A&M Univ, Coll Vet Med & Biomed Sci, Vet Integrat Biosci, Bilingual Lab Toxicol, College Stn, TX 77843 USA

来源：

CHEMOSPHERE | 2021年 / 267卷

关键词：

Baja California Sur; Fish; Elasmobranchs; Hazard quotient; Mercury; HEALTH-RISK ASSESSMENT; FEEDING-HABITS; TRACE-ELEMENTS; PACIFIC COAST; FOOD WEBS; BIOACCUMULATION; CONSUMPTION; METHYLMERCURY; MEXICO; BIOMAGNIFICATION;

D O I：

10.1016/j.chemosphere.2020.129233

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Total mercury concentrations ([THg]) in muscle were determined in commercial finfish and elasmo-branchs from Baja California Sur (BCS), Mexico to evaluate dietary Hg exposure for BCS communities, including the relationship of trophic ecology, length and mass with [THg] that might drive future consumption advice (e.g., recommend limited consumption of large fish for some species). The [THg] ranged from 0.06 to 528.02 mu g kg(-1) ww in finfish and 17.68-848.26 mu g kg(-1) ww in elasmobranchs. Relative to the consumption threshold set for predatory fish in Mexico, all species had a concentration below 1000 mu g kg(-1) ww. As expected,16 (4.02%) and 75 (18.84%) individual fish were above advisory thresholds of 500 and 200 mu g kg(-1) ww, respectively. The hazard quotients (HQs) in most species were significantly <1.0, only banded guitarfish showed a significant median HQ > 1.0. Thus, the relative level of risk of high Hg exposure is low for most species. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：12

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