High precision procedure for determination of selected herbicides and their degradation products in drinking water by solid-phase extraction and gas chromatography–mass spectrometry

Auersperger, Primož; Lah, Karin; Kus, J.; Marsel, J.

doi:10.1016/j.chroma.2005.04.100

Cited by 25 publications

(11 citation statements)

References 11 publications

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“…Most reported methods dealing with fast GC limit the scope to a reduced number of compounds, determining around 30 or less analytes in 10 minutes [3,18,20,35]. In this way, our method has shown that it is possible to determine a higher number of compounds in the same analysis time using a single quadrupole.…”

Section: Analytical Parametersmentioning

confidence: 77%

“…Single quadrupole has been commonly used [3][4][5], although this MS analyzer does not always ensure the sensitivity and selectivity required for most analyte/matrix combinations. This fact has led to an increased use of ion trap detector (ITD) and triple quadrupole (QqQ) analyzers, which allow working in tandem mass spectrometry mode (MS-MS) [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Multiclass determination of 66 organic micropollutants in environmental water samples by fast gas chromatography–mass spectrometry

et al. 2011

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A multiresidue method has been developed for quantification and identification of 66 multiclass priority organic pollutants in water by fast gas chromatography (GC) coupled to mass spectrometry (MS). Capabilities and limitations of single quadrupole mass spectrometer as detector in fast GC were studied evaluating the chromatographic responses in terms of sensitivity and chromatographic peak shapes, as they were influenced by scan time. The number of monitored ions in a selected ion monitoring (SIM) group strongly conditioned the scan time and subsequently the number of data points per peak. A compromise between peak shape and scan time was adopted in order to reach the proper conditions for quantitative analysis. An average of 10 to 15 points per peak was attained for most compounds, involving scan times between 0.1 and 0.22 s.The method was validated for mineral, surface and groundwater. A solid phase extraction (SPE) preconcentration step using C 18 cartridges was applied. Four isotopically labeled standards were added to the samples before extraction, and used as surrogates to ensure a reliable quantification. Analyses were performed by GC-MS in electron ionization mode, monitoring the three most abundant and/or specific ions for each compound and using the intensity ratios as a confirmatory parameter. With a chromatographic run of less than 10 minutes, SIM mode provided excellent sensitivity and

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Section: Analytical Parametersmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Multiclass determination of 66 organic micropollutants in environmental water samples by fast gas chromatography–mass spectrometry

et al. 2011

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“…During the monitoring period the herbicides were analysed in groundwater samples seasonally at the laboratory of JP Vodovod-kanalizacija d.o.o., alternately qualitatively and quantitatively (AuersPerGer et al, 2005 and2009). The qualitative analyses detected the unknown trace organic pollutant with the source in the borehole PU-9.…”

Section: Methodsmentioning

confidence: 97%

Risk assesment of an urban aquifer based on environmental tracers

Trček¹,

Auersperger²,

Leis³

et al. 2013

Geologija

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Groundwater from a Pleistocene sandy-gravel aquifer is a drinking water resource for the Union brewery, located nearthe centre of Ljubljana (Slovenia). A large part of the aquifer recharge area is highly urbanized, which represents a greatrisk for the groundwater quality assurance. The groundwater dating techniques were used to study the contaminationrisk of this drinking-water resource. The application of chlorofluorocarbons (CFCs), sulphur hexafluoride (SF6) andtritium-helium-3 (3H-3He) age indicator was tested, as they haven’t been used in Slovene urban areas so far. The resultsreflect that the 3H-3He dating technique is the most suitable for a groundwater age determination in the study urbanaquifer, since SF6 and particularly CFCs concentrations could be affected by the local contaminations. They indicatedthat average groundwater residence times range from 10 to 30 years. Boreholes that are more distant from the Ši{enskihrib hill are more vulnerable to contamination due to flow of young groundwater from a direction of the main aquifer,which is exposed to the urban pollution. The presented results were supplemented with chemical investigations ofgroundwater organic pollutants. An unknown trace organic pollutant with a base ion mass-to-charge ratio 147 was putinto focus. Its identification based on chromatographic separation and a mass spectrometric detection with GC-MS,LC-MS and LC-TOF MS techniques. The newly detected trace organic pollutant in sampled groundwater representstogether with the 3H and 3He data a new technique to study the flow paths and contaminant transport in the urbanaquifer in both, the lateral and vertical directions

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“…Natan~nej{i opis metode, vklju~no z validacijo, je opisan v literaturi (AUERSPERGER et al, 2005 Legenda: SIM -spremljani masni fragmenti, QVN -m/z za kvantitativno dolo~anje; QVL -m/z za kvalitativno potrditev analita, t r -retenzijski ~as, s r -ponovljivost, N = 6, kot relativni standardni odmik v % za realne vzorce.…”

Section: Metodaunclassified

Pharmaceuticals as indicators of anthropogenic influenceonthegroundwater of Ljubljansko polje and Ljubljansko barje aquifers

Jamnik¹,

Auersperger²,

Urbanc³

et al. 2009

Geologija

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UvodPozornost raziskovalcev je bila {e pred desetletjem usmerjena predvsem v ugotavljanje prisotnosti klasi~nih onesnaževal, kot so pesticidi, poliklorirani bifenili in nitrati, danes pa je njihova pozornost usmerjena tudi v ugotavljanje prisotnosti hormonskih motilcev, ostankov zdravil in sredstev za osebno nego ter drugih kemikalij za gospodinjsko rabo (STAN & HEBERER, 1997; HAL-LING-SØRENSEN et al., 1998;HEBERER, 2002; MOMPE-LAT et al., 2009). V strokovni literaturi se je pri~el uporabljati izraz »Pharmaceuticals and personal care products«, PPCP. Pojav ni povsem nov, saj je prvo poro~ilo o teh substancah v vodnem okolju znano že iz leta 1984 (CRATHORNE et al., 1984). Vse to nas opozarja, da okolja že vrsto desetletij ne onesnažujejo le spojine, ki so tradicionalno spremljane v okviru monitoringov. Ostanki zdravil se v Sloveniji ne spremljajo v okviru rednega monitoringa kemijskega stanja podzemnih vod, prav tako v ve~ini primerov {e niso vklju~eni v nadzor nad zdravstveno ustreznostjo pitne vode.Ostanki teh substanc vstopajo v naravno okolje preko povr{inskih odvodnikov na izpustu iz ~istilnih naprav (RADJENOVI} at al., 2007 Izvle~ekV zadnjem obdobju je pozornost {tevilnih raziskovalcev usmerjena v prou~evanje raz{irjenosti ostankov zdravil in drugih kemikalij splo{ne rabe v okolju. Omenjene snovi v podzemno vodo dospejo neposredno z direktnimi izpusti ali posredno preko povr{inskih oziroma odpadnih vod. Ostanke zdravil v podzemnih vodah lahko obravnavamo kot umetna sledila, ki omogo~ajo oceno antropogenega vpliva na okolje in dolo~itev najbolj ranljivih obmo~ij vodonosnikov.V prispevku so predstavljene zna~ilnosti pojavljanja kofeina, karbamazepina in propifenazona na obmo~ju vodonosnikov Ljubljanskega polja in Ljubljanskega barja. Ljubljansko polje in Barje sta pomembna vira pitne vode. Tovrstna onesnaževala so kazalec u~inkovitosti delovanja kanalizacijskega sistema, na obmo~jih brez kanalizacije pa tudi kazalec samo~istilne sposobnosti vodonosnika. AbstractThe attention of numerous researches has been recently focused on the determination of pharmaceuticals and other persistent chemicals in the environment. The substances enter groundwater either thorough direct discharge or indirectly (through surface or waste water). Pharmaceuticals in groundwater can be regarded as artificial tracers that enable the evaluation of general anthropogenic influence on the environment and identification of the most vulnerable areas of aquifers.The article presents the properties of distribution of caffeine, carbamazepine and propyphenazone in the area of Ljubljansko polje and Ljubljansko barje. Ljubljansko polje and Barje are important drinking water resources. These pollutants are indicators of sewage system efficiency, however, in urban areas without sewage they indicate the aquifer's ability of natural attenuation.

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High precision procedure for determination of selected herbicides and their degradation products in drinking water by solid-phase extraction and gas chromatography–mass spectrometry

Cited by 25 publications

References 11 publications

Multiclass determination of 66 organic micropollutants in environmental water samples by fast gas chromatography–mass spectrometry

Multiclass determination of 66 organic micropollutants in environmental water samples by fast gas chromatography–mass spectrometry

Risk assesment of an urban aquifer based on environmental tracers

Pharmaceuticals as indicators of anthropogenic influenceonthegroundwater of Ljubljansko polje and Ljubljansko barje aquifers

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