Pyrethroid photochemistry: decamethrin
Pyrethroid photochemistry: decamethrin
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拟除虫菊酯光化学：十氢菊酯
DOI：
10.1021/jf60214a006
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发表时间：
1977
影响因子：
6.1
通讯作者：
J. Casida
中科院分区：
文献类型：
--
作者：
L. Ruzo;R. L. Holmstead;J. Casida
材料和方法光谱学。使用Bausch and Lomb Spectronic 505双光束UV分光光度计测定紫外（UV）光谱。除非另有说明，否则红外（IR）光谱以KBr颗粒的形式用Perkin-Elmer 457型光栅IR分光光度计记录。用Perkin-Elmer R32 B 90 MHz光谱仪，使用溶解在含1%四甲基硅烷（Me 4Si）的氘代氯仿中的样品作为内标，获得核磁共振（NMR）光谱。化学位移（）以Me 4Si低场的百万分率（ppm）报告，耦合常数（J）以赫兹（Hz）给出。质谱（MS）在Finnigan Model 1015 D质谱仪上与System Industries Model 150控制系统组合记录。将光谱仪与Finnigan Model 9500气相色谱仪连接，该气相色谱仪使用He作为载气（20-25 mL/min）以温度程序（120-300 ℃，10 ℃/min）操作。甲烷是具有0.5-1.0托的化学电离（Cl）源压力的试剂气体。色谱和分析。用于光产物定量的气相色谱法（GC）使用配备有火焰离子化检测器和Varaport 30（80-100目）上的3%Dexil的玻璃柱（2 m X 3 mm id）的Varian Aerograph Series 1400仪器。用He作为载气（20-25 mL/min）编程柱温（120-300 ℃，10 ℃/min）。检测器和进样口温度为310 ℃.单个峰
MATERIALS AND METHODS Spectroscopy. Ultraviolet (UV) spectra were determined using the Bausch and Lomb Spectronic 505 double-beam UV spectrophotometer. Infrared (IR) spectra were recorded as KBr pellets unless otherwise specified with the Perkin-Elmer Model 457 grating IR spectro-photometer. Nuclear magnetic resonance(NMR) spectra were obtained with the Perkin-Elmer R32B 90 MHz spectrometer using samples dissolved in deuteriochloroform containing 1% tetramethylsilane (Me4Si) as internal standard. Chemical shifts () are reported in parts per million (ppm) downfield from Me4Si and coupling con-stants (J) are given in hertz (Hz). Mass spectra (MS) were recorded on a Finnigan Model 1015D mass spectrometer in combination with a System Industries Model 150 control system. The spectrometer was coupled to a Finnigan Model 9500 gas chromatograph operated with temperature programming (120-300 C, 10C/min) using He as carrier gas (20-25 mL/min). Methane was the reagent gas with a chemical ionization (Cl) source pressure of 0.5-1.0 Torr. Chromatography and Analyses. Gas chromatography (GC) for photoproduct quantitation utilized a Varian Aerograph Series 1400 instrument equipped with a flame ionization detector and a glass column (2 m X 3 mm id) of 3% Dexil on Varaport 30 (80-100 mesh). The column temperature was programmed (120-300 C, 10 C/min) with He as carrier gas (20-25 mL/min). Detector and injection port temperatures were 310 C. Individual peak