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1. Investigating the stability of gadolinium based contrast agents towards UV radiation

Author:
Birka, Marvin,   et al.   ; Roscher, Jörg; Holtkamp, Michael; Sperling, Michael; Karst, Uwe;     Show all 5 Authors
Source:
Water research 2016 v.91 pp. 244-250
ISSN:
0043-1354
Subject:
atomic absorption spectrometry; drinking water; electrospray ionization mass spectrometry; environmental factors; gadolinium; hydrophilic interaction chromatography; ions; irradiation; magnetic resonance imaging; surface water; ultraviolet radiation; wastewater; water treatment; wavelengths; xenobiotics
Abstract:
... Since the 1980s, the broad application of gadolinium(Gd)-based contrast agents for magnetic resonance imaging (MRI) has led to significantly increased concentrations of Gd in the aqueous environment. Little is known about the stability of these highly polar xenobiotics under environmental conditions, in wastewater and in drinking water treatment. Therefore, the stability of frequently applied Gd-b ...
DOI:
10.1016/j.watres.2016.01.012

2. Tracing gadolinium-based contrast agents from surface water to drinking water by means of speciation analysis

Author:
Birka, Marvin,   et al.   ; Wehe, Christoph A.; Hachmöller, Oliver; Sperling, Michael; Karst, Uwe;     Show all 5 Authors
Source:
Journal of chromatography 2016 v.1440 pp. 105-111
ISSN:
0021-9673
Subject:
atomic absorption spectrometry; atomization; detection limit; drinking water; gadolinium; hydrophilic interaction chromatography; lakes; magnetic resonance imaging; rivers; surface water; ultrasonics; water purification; water utilities; watersheds; Germany
Abstract:
... In recent decades, a significant amount of anthropogenic gadolinium has been released into the environment as a result of the broad application of contrast agents for magnetic resonance imaging (MRI). Since this anthropogenic gadolinium anomaly has also been detected in drinking water, it has become necessary to investigate the possible effect of drinking water purification on these highly polar m ...
DOI:
10.1016/j.chroma.2016.02.050

3. Diagnosis of Nephrogenic Systemic Fibrosis by means of Elemental Bioimaging and Speciation Analysis

Author:
Birka, Marvin,   et al.   ; Wentker, Kristina S.; Lusmöller, Elke; Arheilger, Brigit; Wehe, Christoph A.; Sperling, Michael; Stadler, Rudolf; Karst, Uwe;     Show all 8 Authors
Source:
Analytical chemistry 2015 v.87 no.6 pp. 3321-3328
ISSN:
1520-6882
Subject:
atomic absorption spectrometry; biopsy; fibrosis; gadolinium; humans; hydrophilic interaction chromatography; magnetic resonance imaging; pathogenesis; patients; phosphorus; renal failure
Abstract:
... The combined use of elemental bioimaging and speciation analysis is presented as a novel means for the diagnosis of nephrogenic systemic fibrosis (NSF), a rare disease occurring after administration of gadolinium-based contrast agents (GBCA) for magnetic resonance imaging (MRI), in skin samples of patients suffering from renal insufficiency. As the pathogenesis of NSF is still largely unknown part ...
DOI:
10.1021/ac504488k

4. Sensitive quantification of gadolinium-based magnetic resonance imaging contrast agents in surface waters using hydrophilic interaction liquid chromatography and inductively coupled plasma sector field mass spectrometry

Author:
Birka, Marvin,   et al.   ; Wehe, Christoph A.; Telgmann, Lena; Sperling, Michael; Karst, Uwe;     Show all 5 Authors
Source:
Journal of chromatography 2013 v.1308 pp. 125-131
ISSN:
0021-9673
Subject:
aerosols; anthropogenic activities; aquatic environment; conservation areas; detection limit; ecosystems; gadolinium; hydrophilic interaction chromatography; long term effects; magnetic resonance imaging; mass spectrometry; surface water; wastewater treatment; Germany
Abstract:
... The application of gadolinium(Gd)-based contrast agents to support medical examinations by magnetic resonance imaging (MRI) results in a large input of Gd into the environment. The long-term effects of the anthropogenic Gd anomaly, especially on aqueous ecosystems, are mostly unknown. The identification and quantification of Gd-based contrast agents in the aquatic environment requires the use of p ...
DOI:
10.1016/j.chroma.2013.08.017

5. Speciation and Isotope Dilution Analysis of Gadolinium-Based Contrast Agents in Wastewater

Author:
Birka, Marvin,   et al.   ; Telgmann, Lena; Wehe, Christoph A.; Künnemeyer, Jens; Nowak, Sascha; Sperling, Michael; Karst, Uwe;     Show all 7 Authors
Source:
Environmental Science & Technology 2012 v.46 no.21 pp. 11929-11936
ISSN:
1520-5851
Subject:
activated sludge; aeration; chelates; detection limit; dewatering; gadolinium; high performance liquid chromatography; hydrophilic interaction chromatography; isotope dilution technique; magnetic resonance imaging; mass spectrometry; sewage; sewage sludge; sewage treatment; wastewater
Abstract:
... The fate of Gadolinium (Gd)-based contrast agents for magnetic resonance imaging (MRI) during sewage treatment was investigated. The total concentration of Gd in influent and effluent 2 and 24 h composite samples was determined by means of isotope dilution analysis. The balancing of Gd input and output of a sewage plant over seven days indicated that approximately 10% of the Gd is removed during t ...
DOI:
10.1021/es301981z