Dzintars Zacs
University of Latvia
AnalyteEnvironmental chemistryContaminationAnalytical chemistryDetection limitGas chromatographyRepeatabilityMass spectrometryComposition (visual arts)High-performance liquid chromatographyChemistryChryseneSalmoFish productsPyreneCongenerAnthraceneFluorantheneHexabromocyclododecaneOrbitrapPolybrominated diphenyl ethersPopulationEuropean unionFood productsDietary exposureFresh weightFood scienceEnvironmental scienceChromatographyPollutant
30Publications
15H-index
370Citations
Publications 31
Newest
#1Elina Pasecnaja (LU: University of Latvia)H-Index: 3
#2Vadims Bartkevics (LU: University of Latvia)H-Index: 23
Last. Dzintars ZacsH-Index: 15
view all 3 authors...
Abstract null null Per- and polyfluorinated alkyl substances (PFASs) are considered emerging persistent organic pollutants, which are chemically, thermally, and biologically stable, or degrade to persistent end products. Dietary intake is considered as one of the main human exposure pathways of these chemicals and, having entered the human body, PFASs are not metabolised and accumulate in tissues, while their toxicological properties may cause various health problems. Several studies on the occu...
Source
#1Ingus Perkons (LU: University of Latvia)H-Index: 10
#2Janis Rusko (LU: University of Latvia)H-Index: 7
Last. Vadims Bartkevics (LU: University of Latvia)H-Index: 23
view all 4 authors...
Abstract A wide-scope screening of active pharmaceutical ingredients (APIs) and their transformation products (TPs) in wastewater can yield valuable insights and pinpoint emerging contaminants that have not been previously reported. Such information is relevant to investigate their occurrence and fate in various environmental compartments. In this study, we explored the applicability of direct infusion high resolution mass spectrometry (DI-HRMS) for comprehensive and rapid detection of APIs and ...
Source
#1Dzintars ZacsH-Index: 15
#2Ingus PerkonsH-Index: 10
Last. Vadims BartkevicsH-Index: 23
view all 4 authors...
Abstract A study was performed to evaluate the dietary exposure of the Latvian population to polychlorinated naphthalenes (PCNs). Based on the toxicological characteristics, provisional levels of occurrence, congener patterns, and the availability of analytical standards, twenty-six congeners were included in the analysis. Considering the planar structure of PCNs, an analytical protocol on the basis of destructive clean-up and isolation of analytes on carbon was applied, while GC-HRMS and isotop...
Source
#1Elina Pasecnaja (LU: University of Latvia)H-Index: 3
#2Ingus Perkons (LU: University of Latvia)H-Index: 10
Last. Dzintars ZacsH-Index: 15
view all 4 authors...
Flame retardants (FRs) are additives used in consumer products to reduce flammability, even though they can easily contaminate the indoor environment. Since it is common for people in modern cities to spend up to 85% of time indoors, the quality of the indoor environment is critical for human health. In this study, polybrominated diphenyl ethers (PBDEs), organophosphorus flame retardants (OPFRs), emerging brominated flame retardants (EBFRs), and dechlorane-related compounds (DRCs) were measured ...
Source
#1Dzintars ZacsH-Index: 15
#2Ingus PerkonsH-Index: 10
Last. Vadims BartkevicsH-Index: 23
view all 6 authors...
Abstract This study was performed to assess the Latvian population exposure to polybrominated diphenyl ethers (PBDEs), hexabromocyclododecanes (HBCDD), dechlorane-related compounds (DRCs), and emerging brominated flame retardants (EBFRs). Food items including fish, fish products, meat, dairy products, cereals and bread, eggs, vegetable oils, and sweets were analyzed for the content of these contaminants, followed by per capita intake calculations and risk assessment. The highest dietary exposure...
Source
#1Marie MézièreH-Index: 4
#2Kerstin Krätschmer (University of Hohenheim)H-Index: 6
Last. Walter Vetter (University of Hohenheim)H-Index: 53
view all 10 authors...
The risk assessment of chlorinated paraffins (CPs), chemicals of widespread industrial use, is struggling without standardized analytical methods to obtain reliable occurrence data. Indeed, scienti...
Source
#1Ingus Perkons (LU: University of Latvia)H-Index: 10
#2Elina Pasecnaja (LU: University of Latvia)H-Index: 3
Last. Dzintars ZacsH-Index: 15
view all 3 authors...
Abstract This study presents an HPLC–ESI–Q–TOF method for simultaneous quantification of short-chain chlorinated paraffins (SCCPs, C10–13) and an additional characterization of medium-chain chlorinated paraffins (MCCPs, C14–17) in oven-baked pastry products ( n = 38) and unprocessed pastry dough material ( n = 15). Almost 2 times higher SCCP levels were found in the dough material. ΣSCCP concentrations in products ranged from 0.3 ng g −1 to 23.0 ng g −1 (mean: 6.3 ng g −1 ), while the results fo...
Source
#1Dzintars ZacsH-Index: 15
#2Ingus Perkons (LU: University of Latvia)H-Index: 10
Last. Vadims Bartkevics (LU: University of Latvia)H-Index: 23
view all 4 authors...
Abstract An analytical method was developed and validated for the analysis of 32 halogenated flame retardants (HFRs), including 13 polybrominated diphenyl ethers (PBDEs), 9 dechlorane-related compounds (DRCs) and 10 of the so-called alternative BFRs in food samples of animal origin. Gas chromatography (GC) coupled with magnetic sector high resolution mass spectrometry (HRMS) was used for the instrumental analysis. Intralaboratory validation of the developed method was performed in terms of recov...
Source
#1Dzintars ZacsH-Index: 15
#2Ingus Perkons (LU: University of Latvia)H-Index: 10
Last. Vadims Bartkevics (LU: University of Latvia)H-Index: 23
view all 3 authors...
Abstract A new analytical method was established and validated for the analysis of eighteen halogenated flame retardants (HFRs)in food products. Gas chromatography (GC) coupled to Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) employing atmospheric pressure chemical ionization (APCI) was used for the identification and quantitation of contaminants. Intra-laboratory validation of the method was performed with respect to recovery, repeatability, linear calibration ranges, ...
Source
#1Irina Rozentale (LU: University of Latvia)H-Index: 6
#2Dzintars ZacsH-Index: 15
Last. Vadims Bartkevics (LU: University of Latvia)H-Index: 23
view all 3 authors...
: Multiple food research studies have shown that the polycyclic aromatic hydrocarbon (PAHs) are frequently found in processed cocoa products and chocolate. In a present study a method based on dopant-assisted atmospheric pressure photoionisation (DA-APPI) combined with a liquid chromatography/high-resolution mass spectrometer (HPLC-HRMS) for high-sensitivity analysis of four EU marker PAHs in dark chocolate samples was developed and fully validated according to the performance criteria set in EU...
Source
This website uses cookies.
We use cookies to improve your online experience. By continuing to use our website we assume you agree to the placement of these cookies.
To learn more, you can find in our Privacy Policy.