Legacy and new chlorinated persistent organic pollutants in the rivers of south India: Occurrences, sources, variations before and after the outbreak of the COVID-19 pandemic

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

“…1 μL injection” [ 82 ] Water and sediment 11 Water: 0.2–0.4; sediment: 1-3 Water: 0.7–1.3; sediment: 4-15 Water: 94–98; sediment:94-103 GC-ECD: “The column temperature was programmed from 90 °C (3 min) at a rate of 25 °C min to 200 °C, fixed for 15 min and then at a charge per unit of 30 °C min to 265 °C held for 5 min to 275 °C (15 min) at 3 ° C min −1 ”. [ 110 ] Sediment, river water 23 MDL:RW: 2.6 × 10 −7 –9.2 × 10 −6 ; sed: 1.8 × 10 −4 –7.6 × 10 −4 ; 1.5 × 10 −4 –4.1 × 10 −4 RW 62.8–86.3; sed: 66.4–84.3; muscle: 73.1–105 <15 GC-HRMS: “The oven program was 100 °C (1 min), 20 °C/min to 200 °C, and 2.5 °C/min to 270 °C (5 min)” [ 111 ] Water, sediment, benthos, phytoplankton 20 MDLs: Water: 1 × 10 −5 –2.57 × 10 −3 ; sediment: 0.01–2.81 80–112 <5 GC-μECD [ 112 ] Surface water 20 1 × 10 −6 -7.2 × 10 −5 Surrogate recovery: 88–117 and 85–110 GC-ECD: Splitless, “the initial temperature of 120 °C was ramped to a final temperature of 290 °C with a hold time of 3.5 min” [ 113 ] Water 10 MDL: 0.00010 to 0.00040 20 to 115; surrogate: 66 to 84 [ 114 ] water 19 250–3400 89–105 3.9–13.2 GC-MS: “an initial te...…”

Comprative evaluation of Advanced Oxidation Processes (AOPs) for reducing SARS-CoV-2 viral load from campus sewage water

“…However, the generation of eco-toxic by-products, such as chloroform, halo acetic acids, and trihalomethanes, sets a significant limitation to this method. Other disinfecting techniques have their merits and demerits, as they are not equally effective for inactivating viral particles (Al-Hazmi et al, 2022; Gholipour et al, 2022; Rex and Chakraborty, 2022) Therefore, it is crucial to explore and develop a proper treatment strategy for contaminated sewage water in battling this kind of pandemic situation.…”