Geochemical elements in suspended particulate matter of Ensenada de La Paz Lagoon,Baja California Peninsula,Mexico:Sources,distribution,mass balance and ecotoxicological risks  

作　　者：Sandra Soledad Morales-García Pilar de Acacia Pérez-Escamilla Suresh Babu Sujitha Pichaimani Godwyn-Paulson Andrés Felipe Zuniga-Cabezas Muthuswamy Ponniah Jonathan 

机构地区：[1]Instituto Politécnico Nacional(IPN),Centro Mexicano para la Producción más Limpia(CMPL),Av.Acueducto s/n,Col.Barrio la Laguna Ticomán,Del Gustavo A.Madero,C.P.07340,Ciudad de México,Mexico [2]Instituto Politécnico Nacional(IPN),Escuela Superior de Ingeniería y Arquitectura(ESIA),Unidad Ticomán,Calz.Ticomán 600,Delg.Gustavo A.Madero,C.P.07340,Ciudad de México(CDMX),Mexico [3]Instituto Politécnico Nacional(IPN),Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo(CIIEMAD),Calle 30 de Junio de 1520,Barrio la Laguna Ticomán,Del.Gustavo A.Madero,C.P.07340,Ciudad de México,México

出　　处：《Journal of Environmental Sciences》2024年第2期422-436,共15页环境科学学报（英文版）

基　　金：support of the CONACYTFORDECYT-PRONACES/6364/2020 project;the funding granted by SIP projects 20181094 and 20196679。

摘　　要：The present study aimed to evaluate multi-element concentrations(Al,As,Ca,Cd,Co,Cr,Cu,Fe,Mg,Mn,Mo,Ni,Pb,Sr)in suspended particulate material(SPM)collected from Ensenada de La Paz(ELP)lagoon,Baja California Sur,Mexico in two different periods(September and May)to comprehend their origin,geochemical behavior,mass transfer and associated ecotoxicological risks.The 24 hr variation coefficient of volumetric SPM levels were found to be 51.7%in September and 40.5%in May,signifying the effects of oceanic waters.The calculated enrichment factor(EF)values for all the studied elements were of higher magnitude because of the high surface area and oxide nature of SPM,and in this study,Mo had the highest EF of 46.77 probably due to its origin from continental weathering.From the ecotoxicological perspective,the integrated toxic risk index revealed low toxic risk to the benthic community.However,the mean-ERM-Quotient calculated using the particulate concentrations of As,Cd,Cr,Cu,Ni,Pb indicated 9%probability of toxicity to biota.The comprehensive geochemical and ecotoxicological assessment of particulate metal concentrations in the ELP lagoon signify low to moderate contamination.

关 键 词：Suspended particulate material Heavy metals Risk assessment Mass transfer Ensenada de La Paz 

分 类 号：X171.5[环境科学与工程—环境科学]