Kiefer, Karin published the artcileChlorothalonil transformation products in drinking water resources: Widespread and challenging to abate, COA of Formula: C11H9I3N2O4, the main research area is chlorothalonil transformation product drinking water treatment potential toxicity; Activated carbon; Groundwater; Metabolite; Ozonation; Pesticide; Water treatment.
Chlorothalonil, a fungicide applied for decades worldwide, has recently been banned in the European Union (EU) and Switzerland due to its carcinogenicity and the presence of potentially toxic transformation products (TPs) in groundwater. The chlorothalonil sulfonic acid TPs (R471811, R419492, R417888) occurred more frequently and at higher concentrations (detected in 65-100% of the samples, ≤2200 ngL-1) than the phenolic TPs (SYN507900, SYN548580, R611968; detected in 10-30% of the samples, ≤130 ngL-1). The abatement of chlorothalonil TPs was investigated in laboratory and pilot-scale experiments and along the treatment train of various water works, comprising aquifer recharge, UV disinfection, ozonation, advanced oxidation processes (AOPs), activated carbon treatment, and reverse osmosis. In contrast, the sulfonic acid TPs, which occurred in higher concentrations in drinking water resources, react only very slowly with ozone (kO3 <0.04 M-1s-1) and ·OH (kOH <5.0 x 107 M-1s-1) and therefore persist in ozonation and ·OH-based AOPs. Activated carbon retained the very polar TP R471811 only up to a specific throughput of 25 m3kg-1 (20% breakthrough), similarly to the X-ray contrast agent diatrizoic acid. Water Research published new progress about Drinking waters. 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