5.1 Introduction
The European guidelines for the quality of drinking and ground water specify threshold concentrations for several phytopharmaceutical compounds and pesticides. The sum of all pesticides must not exceed 0.5 (J-g/1 with no individual compound exceeding 0.1 (ig/1. To meet these requirements, a multi-residue analytical method of solid phase extraction followed by capillary gas chromato-graphy (CGC) on two capillary columns is described. The detection of halogen-, nitrogen- and phosphorus-containing compounds is achieved simultaneously by nitrogen phosphorus detection (NPD) and electron capture detection (ECD).
5.2 Compounds
POLYCHLORINATED BIPHENYLS (PCBs)
PCB 6 2,3' dichlorobiphenyl
PCB 8 2,4' dichlorobiphenyl
PCB 15 4,4' dichlorobiphenyl
PCB 16 2,2',3 trichlorobiphenyl
PCB 18 2,2',5 trichlorobiphenyl
PCB 20 2,3,3' trichlorobiphenyl
PCB 22 2,3,4' trichlorobiphenyl
PCB 28 2,4,4' trichlorobiphenyl
PCB 31 2,4',5 trichlorobiphenyl
PCB 42 2,2',3,4' tetrachlorobiphenyl
PCB 52 2,2',5,5' tetrachlorobiphenyl
PCB 53 2,2',5,6' tetrachlorobiphenyl
PCB 60 2,3,4,4' tetrachlorobiphenyl
PCB 66 2,3',4,4' tetrachlorobiphenyl
PCB 70 2,3',4',5 tetrachlorobiphenyl
PCB 101 2,2',4,5,5' pentachlorobiphenyl
PCB 118 2,3', 4, 4',5 pentachlorobiphenyl
PCB 138 2,2',3,4,4',5' hexachlorobiphenyl
PCB 143 2,2',3,4,5,6' hexachlorobiphenyl
PCB 153 2,2',4,4',5,5' hexachlorobiphenyl
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PCBs and PBrBs 5
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РСВ 44 2,2'Дб' tetrachlorobiphenyl PCB 170 2,2',3,3',4,4',5
heptachlorobiphenyl
РСВ 49 2,2',4,5' tetrachlorobiphenyl PCB 180 2,2',3,4,4',5,5'
heptachlorobiphenyl
Clophen A30 Clophen A60
POLYBROMINATED BIPHENYLS
-Bromobiphenyl
-Bromobiphenyl
-Bromobiphenyl
2,2 '-Dibromobiphenyl 2,6 -Dibromobiphenyl 2,5'-Dibromobiphenyl 2,4'-Dibromobiphenyl 4,4'-Dibromobiphenyl
2,4,6 -Tribromobiphenyl 2,2',5-Tribromobiphenyl 2,3',5-Tribromobiphenyl 2,4',5-Tribromobiphenyl 2,2,5,6'-Tetrabromobiphenyl 2,2', 5,5 -Tetrabromobiphenyl 2,2',4,5-Tetrabromobiphenyl 2,2,4,4,6,6-Hexabromobiphenyl
PESTICIDES
Aldrin
Alachlor
Ametryn
Atraton
Azinphos-ethyl
Azinphos-methyl
Bifenox
Bromophos-ethyl
Bromophos-methyl
Chlorpropham
cis-Chlordan
trans-Chlordan
Cyanazin
Heptachlor
cis-Heptachlorepoxide
trans-Heptachlorepoxide
Hexachlorobenzene
Isobumeton
Malathion
Matalaxyl
Metazachlor
Methoprothryn
Methoxychlor
Metolachlor
Nitrofen
Parathion-ethyl (E605)
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5 Pesticides, PCBs and PBrBs
PESTICIDES
o,p-DDD
p,p-DDD
p,p-DDE
o,p-DDE
o,p-DDT
p,p-DDT
Desmetryn
Dieldrin
Diflufenican
alfa-Endosulfan
beta-Endosulfan
Endosulfan sulphate
Endrin
EPTC
Fenpropimorph
alpha-HCH
beta-HCH
delta-HCH
gamma-HCH (= lindane)
Parathion-methyl
Pendimethalin
Pentachlorobenzene
Phenmedipham
Prochloraz
Prometon
Prometryn
Propiconazol
Prosulfocarb
Tebuconazol
Terbutryn
Triadimefon
Triadimenol
Trifluralin
Vinclozolin
PHOSPHORIC ACID ESTERS Phosphoric acid tributylester Phosphoric acid tris(2-chloroethyl)ester
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