2021
Retrospective HRMS Screening and Dedicated Target Analysis Reveal a Wide Exposure to Pyrrolizidine Alkaloids in Small Streams
GÜNTHARDT, Barbara F., Felix E. WETTSTEIN, Juliane HOLLENDER, Heinz SINGER, Jana HÄRRI et. al.Základní údaje
Originální název
Retrospective HRMS Screening and Dedicated Target Analysis Reveal a Wide Exposure to Pyrrolizidine Alkaloids in Small Streams
Autoři
GÜNTHARDT, Barbara F. (756 Švýcarsko), Felix E. WETTSTEIN (756 Švýcarsko), Juliane HOLLENDER (756 Švýcarsko), Heinz SINGER (756 Švýcarsko), Jana HÄRRI (756 Švýcarsko), Martin SCHERINGER (756 Švýcarsko, garant, domácí), Konrad HUNGERBÜHLER (756 Švýcarsko) a Thomas D. BUCHELI (756 Švýcarsko)
Vydání
Environmental Science and Technology, American Chemical Society, 2021, 0013-936X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10511 Environmental sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 11.357
Kód RIV
RIV/00216224:14310/21:00122255
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000612354700025
Klíčová slova anglicky
Plants; Contamination; Toxins; Surface waters; Computer simulations
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 10. 1. 2022 11:28, Mgr. Marie Šípková, DiS.
Anotace
V originále
Pyrrolizidine alkaloids (PAs) are found to be toxic pollutants emitted into the environment by numerous plant species, resulting in contamination. In this article, we investigate the occurrence of PAs in the aquatic environment of small Swiss streams combining two different approaches. Pyrrolizidine alkaloids (PAs) are toxic secondary metabolites produced by numerous plant species. Although they were classified as persistent and mobile and found to be emitted into the environment, their occurrence in surface waters is largely unknown. Therefore, we performed a retrospective data analysis of two extensive HRMS campaigns each covering five small streams in Switzerland over the growing season. All sites were contaminated with up to 12 individual PAs and temporal detection frequencies between 36 and 87%. Individual PAs were in the low ng/L range, but rain-induced maximal total PA concentrations reached almost 100 ng/L in late spring and summer. Through PA patterns in water and plants, several species were tentatively identified as the source of contamination, with Senecio spp. and Echium vulgare being the most important. Additionally, two streams were monitored, and PAs were quantified with a newly developed, faster, and more sensitive LC-MS/MS method to distinguish different plant-based and indirect human PA sources. A distinctly different PA fingerprint in aqueous plant extracts pointed to invasive Senecio inaequidens as the main source of the surface water contamination at these sites. Results indicate that PA loads may increase if invasive species are sufficiently abundant.