This work investigated, during one year, the occurrence and fate of 52 contaminants emerging concern (CECs) in transnational river basins coastal areas North Portugal Galicia (NW Spain) wastewater treatment plants (WWTPs) discharging on these environments. The different CECs investigated included pharmaceuticals, personal care products, industrial chemicals, among others, which ca. 90 % would fulfill persistence, mobility toxicity criteria proposed by German Environmental Agency. results...

The presence of pollutants in estuary and oceanic systems is a global problem serious concern to human environmental health. Usually, monitoring studies consider classical persistent organic (POPs). However, the lists POPs keep continuously growing new other emerging should be considered programs. So, this study aimed investigate distribution profile (polychlorinated biphenyl (PCBs), organochlorine pesticides (OCPs), polycyclic aromatic hydrocarbons (PAHs)), (polybrominated diphenyl ethers...

Contaminants of emerging concern (CECs) are compounds diverse origins that have not been deeply studied in the past which now accruing growing environmental interest. The NOR-Water project aimed to identify main CECs and their sources water environment Northern Portugal-Galicia (located northwest Spain) transnational region. To achieve these goals, a suspect screening analytical methodology based on use liquid chromatography coupled high resolution mass spectrometry (LC-HRMS) was applied 29...

This work describes a reliable, cheap, easy and fast method for analysis of nine bisphenols in mussel samples by gas chromatography-mass spectrometry after trimethylsilylation. The modified consisted miniaturized matrix solid phase dispersion (micro-MSPD) glass Pasteur pipette using Captiva EMR (enhanced removal)-lipid as the sorbent. Good linearity was obtained range (1-500 μg L-1) with correlation coefficient (R2) ≥ 0.998. accuracy precision were determined at two concentration levels....

Diffusion NMR, and in particular the DOSY processing method (Diffusion Ordered SpectroscopY), is an attractive technique to characterize mixtures without first having separate components. As a result, can yield vast amount of analytical information. General applications are reviewed here although we emphasize specialist that provide unique data. Such include analysis kinetic products, detection impurities complex foodstuffs. We also focus on recent applications, such as incorporation into...

In this paper a new miniaturized version of the analytical method based on QuEChERS technique using Florisil in cleanup step for extracting six phthalic acid esters (PAEs) mussel samples was developed by an design experiments.

Abstract A fast, effective and low cost sample preparation method based on miniaturized matrix solid-phase dispersion (micro-MSPD) combined with gas chromatography coupled to tandem triple-quadrupole-mass spectrometry (GC–MS/MS) has been developed for the determination of six phthalate diesters (DMP, DEP, DBP, BzBP, DEHP DnOP) in mussel samples. The target compounds have included list priority pollutants by United States Environmental Protection Agency. extraction step was optimized real...

Organochlorinated compounds are major environmental concern due to their persistence, long-range transportability and bio-accumulation. Chlorinated paraffin (CP) mixtures, especially short-chain CPs (SCCPs), found in samples at very high levels. However, information about levels is still insufficient, mainly marine biota. This study aimed optimize validate a method for the determination of SCCPs (short-chain chlorinated paraffins) bivalve mollusk using Soxtec extractor Gas Chromatography...

A new strategy for building up composite samples, using experimental design matrices, useful in environmental and water quality control screening studies, is presented. While fixing the number of experiments to be carried out this chemometric strategic approach provides us not only with unbiased estimates true population mean, but also analytical objects allowing direct evaluation original individual sample specimens. This additional information has semiquantitative character it obtained...

Determination of heteroelement organic compounds at environmental levels requires highly efficient chromatographic separations and selective sensitive detection. For this purpose, a capillary gas chromatographic–helium atmospheric pressure microwave-induced plasma atomic emission detection method was developed for the simultaneous determination 18 organochlorine nine organophosphorus pesticides in water samples. Monitoring lines elements such as chlorine, phosphorus sulfur ensures nearly...

Abstract This work presents an optimized gas chromatography–electron ionization–high-resolution mass spectrometry (GC-EI-HRMS) screening method. Different method parameters affecting data processing with the Agilent Unknowns Analysis SureMass deconvolution software were in order to achieve best compromise between false positives and negatives. To this end, accurate-mass library of 26 model compounds was created. Then, five replicates mussel extracts spiked a mixture these at two...

The objective of this work was to determine the spatial distribution and temporal trend (2010-2019) organochlorine compounds (OCs), polychlorinated biphenyls (PCBs) pesticides (OCPs), in wild mussels from several Galician Rías (estuaries). Some them, like northernmost estuaries, were studied for first time. OCs determined by GC-ECD confirmed GC-MS/MS. SPCB levels (sum PCBs 31, 28, 52, 101, 118, 153, 105, 138, 156, 180) found range 7.2-263.1 ng/g dw (dry weight) SDDt pp´- DDT, op´-DDT,...

The objective of this work was to determine the spatial distribution and temporal trend (2010–2019) organochlorine compounds (OCs), polychlorinated biphenyls (PCBs) pesticides (OCPs), in wild mussels from several Galician Rías (estuaries). Some them, like northernmost estuaries, were studied for first time. OCs determined by GC-ECD confirmed GC-MS/MS. SPCB levels (sum PCBs 31, 28, 52, 101, 118, 153, 105, 138, 156, 180) found range 7.2–263.1 ng/g dw (dry weight) SDDt pp´- DDT, op´-DDT,...