Chiaia-Hernandez, Aurea C. published the artcileSuspect and nontarget screening approaches to identify organic contaminant records in lake sediments, COA of Formula: C11H9I3N2O4, the main research area is suspect nontarget screening identification organic contaminant record lake sediment; identification organic contaminant record lake sediment Switzerland.
Sediment cores provide a valuable record of historical contamination, but so far, new anal. techniques such as high-resolution mass spectrometry (HRMS) have not yet been applied to extend target screening to the detection of unknown contaminants for this complex matrix. A combination of target, suspect, and nontarget screening using liquid chromatog. (LC)-HRMS/MS was performed on extracts from sediment cores obtained from Lake Greifensee and Lake Lugano located in the north and south of Switzerland, resp. A suspect list was compiled from consumption data and refined using the expected method coverage and a combination of automated and manual filters on the resulting measured data. Nontarget identification efforts were focused on masses with Cl and Br isotope information available that exhibited mass defects outside the sample matrix, to reduce the effect of anal. interferences. In silico methods combining the software MOLGEN-MS/MS and MetFrag were used for direct elucidation, with addnl. consideration of retention time/partitioning information and the number of references for a given substance. The combination of all available information resulted in the successful identification of 3 suspect (chlorophene, flufenamic acid, lufenuron) and 2 nontarget compounds (hexachlorophene, flucofuron), confirmed with reference standards, as well as the tentative identification of 2 chlorophene congeners (dichlorophene, bromochlorophene) that exhibited similar time trends through the sediment cores. This study demonstrates that complementary application of target, suspect, and nontarget screening can deliver valuable information despite the matrix complexity and provide records of historical contamination in 2 Swiss lakes with previously unreported compounds
Analytical and Bioanalytical Chemistry published new progress about Amine oxides, C10-16-alkyldimethyl Role: POL (Pollutant), OCCU (Occurrence). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, COA of Formula: C11H9I3N2O4.
Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem