[Analysis of dithiocarbamate pesticide residues a comparison of the head space and the colorimetric method (author's transl)].
The colorimetric method of Keppel [1] has been used. To be able to analyse 20 and more samples we slightly changed the head space method of McLeod [3]. To cutted lettuce which is brought into a penicilline flask, we add HCl and a reducing agent (SnCl2), and close the flask. After overnight heating on a waterbath the liberated CS2 is injected into a gaschromatograph with a flame photometric detector. The results are compared with known quantities of zineb, added to lettuces. A correlation factor r = 0.9903 has been found.
D002219:Carbamates; D002246:Carbon Disulfide / Q000032:analysis*; D002849:Chromatography, Gas; D003124:Colorimetry / Q000379:methods; D005506:Food Contamination / Q000032:analysis; D007306:Insecticides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D010783:Photometry / Q000379:methods; D014675:Vegetables / Q000032:analysis*
D002219:Carbamates; D007306:Insecticides; D010573:Pesticide Residues; D002246:Carbon Disulfide
Vergleich bei der Erfassung von Dithiocarbamaten durch chromatographische Bestimmung von Schwefelkohlenstoff mittels eines flammenphotometrischen Detektors und der colorimetrischen Bestimmung.