Page 40 - Application Notebook - Solution for Food Safety
P. 40
LAAN-A-GC-E059
Application Gas Chromatograph
News
Analysis of Organophosphorus Pesticides
Using Nexis GC-2030
No. G294
Cases have been reported of health problems due to foods Analysis Results
contaminated with pesticides, and there is currently A mixture standard solution of 54 organophosphorus
heightened interest in food safety countermeasures. Using pesticides* (20 mg/L) was introduced via split injection,
a detector with high selectivity for specific components, or and the elution positions of each pesticide were
a mass spectrometer highly capable of qualitative analysis confirmed.
are effective when analyzing trace components in foods
and other samples in which there are many impurities.
The FPD-2030 flame photometric detector, which is
installed in Nexis GC-2030 gas chromatograph, has the
world's highest level of sensitivity* thanks to the optimized
nozzle shape and the advanced dual focus system.
In the analysis of pesticides in foods, this detector provides
high sensitivity and high stability.
In this Application News, we introduce an analysis of
organophosphorus pesticides using Nexis GC-2030 gas
chromatograph, which is equipped with the FPD-2030.
*As of February 2017
E. Kobayashi, T. Murata
Table 1 Analytical Conditions
Model : Nexis GC-2030
Detector : FPD-2030 (P-mode)
Column : SH-Rtx-1701 (0.25 mm I.D. × 30 m, d.f. = 0.25 μm)
Column Temperature : 60 °C (2 min) - 25 °C/min - 150 °C (0 min) - 5 °C/min - 200 °C (12 min) - 5 °C/min - 280 °C (7 min) Total 50.6 min
Injection Mode : Split 1 : 20
Carrier Gas Controller : Constant Linear Velocity (He)
Linear Velocity : 30 cm/sec
Injection Temperature : 250 °C
Detector Temperature : 275 °C
Injection Volume : 1 μL
1: Ethoprophos 7: Dimethoate 13: Isofenphos 19: Fensulfothion
2: Phorate 8: Tolclofos-methyl 14: PAP (Phenthoate) 20: EPN
3: Thiometon 9: Chlorpyrifos 15: Prothiofos 21: PMP (Phosmet)
4: Terbufos 10: Formothion 16: DMTP (Mathidathion) 22: Pyraclofos
5: Etrimfos 11: MPP (Fenthion) 17: Butamifos
6: ECP (Dichlofenthion) 12: MEP (Fenitrothion) 18: Sulprofos
Chromatogram of 20 mg/L Organophosphorus Pesticides