identification of hydrolytic product of triazophos in buffered and alkaline s...

仪器资料 · 发表于 2017-6-23 20:15:55

identification of hydrolytic product of triazophos in buffered and alkaline solutions with different ph (邓永智)

INTRODUCTION
Triazophos (CAS Registry No. 24017-47-8) is the common name for O,O-diethyl O-1-phenyl-1H-1,2,4-triazol-3-yl phosphorothioate (Figure 1). It is one of mid-toxic and broad-spectrum nonsystemic contact organophosphorus pesticides (OPs). It had been put into agriculture use since late 1970s, on various crops such as cotton, maize, paddy and vegetable.

MATERIALS AND METHODS
Instrumentals. The analysis of derivatives of hydrolytic products of triazophos was performed on a Varian 3900 GC directly connected to a Saturn 2000 ion-trap mass spectrometer (Varian, CA, USA). The mass spectrometer operated in the EI Auto mode with 70eV ionization energy was used for full scan at a m/z range from 40 to 500 Da. Standard injection port: 250 oC, splitless injection, 1 μL injection volume; capillary column: CP-Sil 8 MS (Varian, CA, USA), 30 m × 0.25 mm i.d. and 0.25 μm film thickness; column temperature program: 80 oC (3 min)-10 oC /min-280 oC (7 min); carrier gas flow rate: helium 1.0 mL/min; manifold, trap and transfer line temperatures were set at 40, 170 and 260 oC, respectively. Instrument control and mass spectrometry data were managed by Saturn GC/MS Workstation (Version 5.52, Varian, Inc).

请点击此处下载

请先注册会员后在进行下载

已注册会员，请先登录后下载