keyword
MENU ▼
Read by QxMD icon Read
search

quantum yield neonicotinoid

keyword
https://www.readbyqxmd.com/read/27989110/photochemistry-of-the-neonicotinoid-imidacloprid-on-surfaces
#1
Kifle Z Aregahegn, Dorit Shemesh, R Benny Gerber, Barbara J Finlayson-Pitts
Imidacloprid (IMD) is the most widely used neonicotinoid insecticide found on environmental surfaces and in water. Analysis of surface-bound IMD photolysis products was performed using attenuated total reflectance FTIR (ATR-FTIR), electrospray ionization (ESI-MS), direct analysis in real time mass spectrometry (DART-MS) and transmission FTIR for gas phase products. Photolysis quantum yields (φ) for loss of IMD were determined to be (1.6 ± 0.6) x 10-3 (1s) at 305 nm and (8.5 ± 2.1) x 10-3 (1s) at 254 nm. The major product is the imidacloprid urea derivative (IMD-UR, 84% yield), with smaller amounts of the desnitro imidacloprid (DN-IMD, 16% yield) product, and gaseous nitrous oxide (N2O)...
December 19, 2016: Environmental Science & Technology
https://www.readbyqxmd.com/read/20131836/photodegradation-of-novel-nitromethylene-neonicotinoids-with-tetrahydropyridine-fixed-cis-configuration-in-aqueous-solution
#2
Xianfeng Zhao, Xusheng Shao, Zhuyan Zou, Xiaoyong Xu
Photodegradation of 1-((6-chloropyridin-3-yl)methyl)-7-methyl-8-nitro-1,2,3,5,6,7-hexahydroimidazo[1,2-a]pyridin-5-ol (IPPA152001) and 1-((6-chloropyridin-3-yl)methyl)-7-methyl-8-nitro-5-propoxy-1,2,3,5,6,7-hexahydroimidazo[1,2-a]pyridine (IPPA152004) was studied in distilled water; high-pressure mercury lamp and xenon lamp were used as light sources. The photolytic rate constants of the two compounds and their half-lives were calculated. Compared with imidacloprid, the order of photodegradation rate of three compounds was as follows: imidacloprid > IPPA152001 > or = IPPA152004...
March 10, 2010: Journal of Agricultural and Food Chemistry
1
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"