Answer- Test for pesticides are as follows-
Baby food samples were tested for pesticides using standard
procedures employed by the Food and Drug Administration (FDA) and
described in the FDA Pesticide Analytical Manual. The Luke
extraction method was used for all polar and non-polar pesticides
detectable by either Gas chromatography (GC) or High Performance
Liquid Chromotography (HPLC). Materials required in LUKE method are
as follows-
Apparatus-
- Automatic pipettes, suitable for handling volumes of 10 µL to
5000 µL and 1 mL to 3 mL
- 250 ml PTFE centrifuge tubes
- 40 ml glass tubes with caps
- Vortex
- Turrax homogeniser
- Centrifuge, suitable for the centrifuge tubes employed in
the
procedure and capable of achieving at least 3300 rpm
- Water bath
- Injection vials, 2 ml, suitable for LC and GC auto-sampler
- Volumetric flasks
4. Chemicals-
- Acetone p.a.
- Petroleumether
- Dichloromethane
- Anhydroussodium sulphate
- Ammonium formiate
- Ultra-purewater
- MethanolHPLC grade
- Isooctane
- Toluene
- Acetic acid
- Pesticides standards.