Campos-Manas, Marina Celia published the artcileFast determination of pesticides and other contaminants of emerging concern in treated wastewater using direct injection coupled to highly sensitive ultra-high performance liquid chromatography-tandem mass spectrometry, Synthetic Route of 117-96-4, the main research area is pesticide pollutant wastewater direct injection UHPLC mass spectrometry; Contaminants of emerging concern (CECs); Direct injection; Liquid chromatography–mass spectrometry (LC–MS/MS); Microcontaminants; Multiresidue analysis; Treated wastewater.
It is well known that wastewater treatment plant (WWTP) effluents usually contain micropollutants such as pharmaceuticals (or their transformation products, TPs) or pesticides, which is a major issue when evaluating their possible reuse (e.g. for irrigation in agriculture). In search for an improved accuracy and simplicity, methods based on the direct injection of the sample (DI) represent a recent trend taking advantage of the increasing sensitivity of new mass spectrometry (MS) instruments. Thus, the present study shows the development and validation of a DI-based method by ultra-high-performance liquid chromatog. quadrupole-linear ion trap analyzer (UHPLC-QqLIT-MS/MS). The proposed method was applied to the monitoring of 115 organic microcontaminants (including pharmaceuticals, TPs and pesticides) at the ng L-1/μg L-1 level in wastewater effluents from urban WWTPs. Sample pre-treatment was reduced to acetonitrile addition and filtration of the mixture previous to LC-MS anal. Total anal. time was <15 min. A subsequent validation protocol was carried out in treated WW (TWW), following indications of SANTE and Eurachem Guidelines. Linearity and matrix effect were evaluated in the range of 10-1000 ng L-1. 70% of the analytes showed a moderate matrix effect (â?5%). Trueness (expressed as recovery) and precision (calculated as relative standard deviation, RSD) were evaluated at four concentration levels (20, 50, 500 and 1000 ng L-1) in TWW samples. The LODs ranged from 1 to 357 ng L-1 and the LOQs from 10 to 500 ng L-1. 92% of the compounds showed limits of quantification â?00 ng L-1. In most cases, mean recoveries were in the range 70-120%, and RSD values were â?0%. The validated method was successfully applied to the anal. of 10 TWW samples, demonstrating the occurrence of 67 target compounds at concentration levels from 26705 ng L-1 (4-aminoantipyrine) to 10 ng L-1 (tebuconazole and bezafibrate). Journal of Chromatography A published new progress about Drugs. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Synthetic Route of 117-96-4.
Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem