• Home
  • AZTI
  • Marine Research Division
  • Maria Jesus Belzunce
Maria Jesus Belzunce

Maria Jesus Belzunce
AZTI · Marine Research Division

PhD in Chemistry

About

121
Publications
20,353
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
2,130
Citations
Citations since 2017
14 Research Items
649 Citations
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
Introduction
Maria Jesus Belzunce Segarra currently works at the Marine Research Division, AZTI. Maria does research in Marine Environmental Chemistry. Her current project is an European project (Interreg Atlantic Area program) call MONITOOL that deals with the implementation of passive samplers to evaluate the chemical status in transitional and coastal waters under the Water Framework Directive.

Publications

Publications (121)
Article
[Please note that the article can be freely downloaded from https://authors.elsevier.com/c/1fW0wB8ccuoOJ before September 20, 2022 ] In order to move forward in the acceptance of a novel contaminant monitoring technique (Diffusive Gradients in Thin-films: DGT) for assessment of marine water bodies, sensu the WFD, an Inter-Laboratories Comparison (I...
Article
Please note that the article and supplementary material can be freely downloaded from : https://doi.org/10.1016/j.marpolbul.2022.113715 This study investigates the relationships among Ni, Cd and Pb's different chemical forms determined by different methodologies in coastal and transitional waters across a broad geographical scale. Concentrations w...
Conference Paper
Full-text available
The aim of this research was to apply passive sampling for the assessment of dredging activity impacts in the quality of port waters
Chapter
Diffusive Gradient in Thin Films (DGT), and passive samplers (PS), in general, are already widely used in investigative monitoring and there is an increasing interest in their use for the environmental assessment of water bodies, within European policies requirements. The present work aimed to investigate the relationship between dissolved metal co...
Article
Full-text available
This protocol was developed based on the knowledge acquired in the framework of the Interreg MONITOOL project (EAPA_565/2016) where extensive sampling campaigns were performed in transitional and coastal waters covering eight European countries. It provides detailed procedures and guidelines for the sampling of these waterbodies by concurrent colle...
Preprint
This good practice guide is focused on the DGT devices, which are the most widely used passive sampler for metals, covering the following aspects: ■ Principle ■ Handling passive sampling devices for metals ■ Estimation of appropriate field deployment time ■ A Good Practice Guide for the Use of DGTs ■ Passive sampling device preparation and assembly...
Book
Full-text available
This document provides guidance on best practice for the use of Diffusive Gradient in Thin films (DGT) passive samplers devices in sampling of transitional and coastal waters for water quality monitoring. The methodology to be addressed in this guide was developed by the consortium of the European Union's Interreg MONITOOL Project in order to ensur...
Article
The current study evaluates the effect of seawater physico-chemical characteristics on the relationship between the concentration of metals measured by Diffusive Gradients in Thin films (DGT) passive samplers (i.e., DGT-labile concentration) and the concentrations measured in discrete water samples. Accordingly, Inductively Coupled Plasma Mass Spec...
Technical Report
Full-text available
New global standards on sulphur content in marine fuels have led to an increasing number of ships installing exhaust gas cleaning systems (EGCS), also known as scrubbers, to reduce their emissions of sulphur oxides to the atmosphere. Ships equipped with a scrubber can continue to use heavy fuel oil, and the process results in discharges of large vo...
Article
Full-text available
This technical annex provides advice on the use of the Diffusive Gradients in Thin films (DGT) technique for evaluating metal contamination in sediment, and on the interpretation of DGT data. DGT has been extensively validated and is currently one of the most used techniques for passive sampling of metals in freshwater and marine sediments (Lehto,...
Presentation
MONITOOL (https://www.monitoolproject.eu/) is a European project formed by 7 Partners covering the Atlantic region from the Canary Islands to the Scottish Highlands and Islands, and one Partner from the Mediterranean region. The main driver of this project is to respond to European Water Framework Directive (WFD)(2000/60/EC) demands for the assessm...
Article
Full-text available
Metals are commonly determined in aquatic organisms, primarily using bivalves to provide important data on their bioavailability. The technique of dif-fusive gradients in thin films (DGTs) has also been employed to assess the concentration of metals in freshwater and marine environments, determining their lability. The present work evaluated and co...
Article
Using a long-term (1995–2014) monitoring network, from 51 sampling stations in estuaries and coasts of the Basque Country (Bay of Biscay), the objective of this investigation was to assess the responsiveness of 83 variables in water (18), sediments (27), biota (26), phytoplankton (2), macroinvertebrates (5) and fishes (5) to different human pressur...
Article
The use of diffusive gradients in thin films (DGT) for predicting metal bioavailability was investigated by exposing the bivalve Tellina deltoidalis to an identical series of metal-contaminated sediments deployed simultaneously in the field and laboratory. To understand the differences in metal exposure occurring between laboratory and field-based...
Conference Paper
Full-text available
International SQG values for metals and organic compounds have been calculated [1, 2]. Nevertheless according to Chapman [3], the SQG should be used in the region where they were developed to better predict the toxicity of contaminants for each specific coastal environment [4]. Hence, the aims of this study are (i) to calculate the regional SQG for...
Article
Full-text available
Marine regional Sediment Quality Guidelines (SQG) for polychlorinated biphenyls (PCB) and polycyclic aromatic hydrocarbons (PAH) from the Basque coast (SE Bay of Biscay) were determined, on the basis of sediment chemistry, toxicity and benthic community disturbance from analysis of 756 estuarine and coastal samples. The SQG were calculated using a...
Conference Paper
Full-text available
Tributyl tin (TBT) is a biocide that has been widely used in anti-fouling paints for ships. It is one of the most toxic xenobiotics ever produced and deliberately introduced into the environment, causing toxic effects in many different organisms. These effects have been monitored in many areas by analysing the imposex development (superimposition o...
Article
This study refers to the performance of Phase I Toxicity Identification Evaluation (TIE) procedures to identify the contaminants (i.e. organic compounds, metals and ammonia) exerting toxicity in marine sediments from the Pasaia harbor (Oiartzun estuary, northern Spain). The effectiveness of the manipulations to reduce toxicity was proved with the m...
Article
Full-text available
This study refers to the integrative assessment of sediment quality in three harbour areas at the Spanish Atlantic Coast: Vigo (Northwestern Spain), Bilbao and Pasajes (Northern Spain). At each site, two lines of evidence have been considered: chemical analyses (metal, PAH and PCB concentrations in sediments and ammonia concentration in bioassays)...
Article
In this study an integrative approach has been applied for the analysis of water quality degradation within a harbour area. A combination of marine hydrodynamics, chemistry and ecotoxicological knowledge has been used to validate the use of new tools to help harbour environmental managers. These novel methodologies have been applied to Pasaia harbo...
Article
Full-text available
Regional Sediment Quality Guidelines (SQG) for metals from the Basque Country (northern Spain) were determined. These guidelines are proposed to be used for management purposes, within the Water Framework Directive (WFD). SQG were determined on the basis of sediment chemistry, toxicity and benthic community disturbance, from 961 estuarine and coast...
Conference Paper
Regional Sediment Quality Guidelines (SQG) for metals from the Basque Country (northern Spain) were determined. These guidelines are proposed to be used for management purposes, within the Water Framework Directive (WFD). SQG were determined on the basis of sediment chemistry, toxicity and benthic community disturbance, from 961 estuarine and coast...
Article
In this contribution, the potential use of diffusive gradients in thin-films (DGTs) for the chemical evaluation of transitional water bodies within the Water Framework Directive (WFD) has been studied. The water metal concentration has been evaluated in 13 estuaries in the southeastern Bay of Biscay. The DGTs were deployed in triplicate at two stat...
Article
Full-text available
The feasibility of using lab-cultured amphipods Corophium multisetosum (Stock 1952) to evaluate the toxicity of contaminants present within marine sediments was studied. This was done by comparing the sensitivity of lab-cultured amphipods in a cadmium toxicity test and to toxic sediment samples, during a 10-days bioassay, with field collected indiv...
Article
The main limiting factor to carrying out toxicological bioassays with sea urchin larvae is the restricted period for the availability of viable gametes. Although studies have been undertaken of the reproductive cycle of the sea urchin for several areas of the Bay of Biscay, only limited information exists for the southeasternmost area (the Basque c...
Article
Tributyltin (TBT), dibutyltin (DBT) and monobutyltin (MBT) were measured in surficial sediments at, the ports of Pasaia and Bilbao, together with other mid- and small-size harbours of the Basque Country (northern Spain), in 2007-2008. The highest values of the sum of the three measured butyltin species (3523-3640 ng g(-1), as Sn) were found at samp...
Article
Full-text available
Laboratory experiments were carried out over two different periods, with the aim of investigating and utilizing the induction to gonadal maturation of the sea urchin Paracentrotus lividus. The final objective was to obtain viable gametes outside the period of natural spawning in the environment; which would allow the utilization of ecotoxicological...
Article
Full-text available
Resumen En este trabajo se describe paso a paso el procedimiento para llevar a cabo el bioensayo para evaluar la toxicidad de sedimentos marinos mediante la utilización de larvas del erizo de mar Paracentrotus lividus, distribuyéndose la información en los siguientes apartados: introducción, aplicación, términos y defi niciones, principio del método...
Article
Full-text available
Two factors, seasonality and body size, were studied to determine their influence on the sensitivity of the amphipods Corophium urdaibaiense and Corophium multisetosum to toxicants. Seasonality was studied by comparing LC50 values for cadmium and ammonia toxicity to both species over a year. Body size effect was studied by comparing LC50 values of...
Article
Full-text available
The metal content measured in surface sediment and suspended particulate matter (SPM) samples collected from the Ulla River estuary (NW Spain) showed evidence of contamination by Cr, Cu, Mn, Ni, and Zn, but not by Cd, Fe, and Pb. The metals are trapped mainly in the sediment of two estuary zones, just before they reach the Arosa Ria. The first zone...
Conference Paper
Full-text available
At the present time, there are not standard protocols for the management of dredged material and each country has developed its own procedures. In Spain, the first guidelines regarding the characterization and management of dredged sediments were published in 1994 and are based on chemical approaches. Later studies have proved the need to considere...
Article
Full-text available
The European Water Framework Directive (WFD) establishes a framework for the protection of estuarine and coastal waters, with the most important objective being to achieve 'good ecological status' for all waters, by 2015. Hence, Member States are establishing programmes for the monitoring of water quality status, through the assessment of ecologica...
Article
Full-text available
Total concentrations and chemical forms of metals in surface sediments of the Vigo Ria (NW Iberian Peninsula) were determined following the sequential extraction method proposed by Tessier et al. (1979). Total values ranged from 7 to 14 µgCo g -1 , 52 to 76 µgCr g -1 , 18 to 82 µgCu g g -1 , 136 to 209 µgMn g g -1 , 18 to 30 µgNi g g -1 , 24 to 112...
Article
Full-text available
Total concentrations and chemical forms of metals in surface sediments of the Vigo Ria (NW Iberian Peninsula) were determined following the sequential extraction method proposed by Tessier et at. (1979). Total values ranged from 7 to 14 mu gCo g(-1), 52 to 76 mu gCr g(-1), 18 to 82 mu gCu g(-1), 136 to 209 mu gMn g(-1), 18 to 30 mu gNi g(-1), 24 to...
Article
Full-text available
The metal content measured in surface sediment and suspended particulate matter (SPM) samples collected from the Ulla River estuary (NW Spain) showed evidence of contamination by Cr, Cu, Mn, Ni, and Zn, but not by Cd, Fe, and Pb. The metals are trapped mainly in the sediment of two estuary zones, just before they reach the Arosa Ria. The first zone...