Table 4: Identities of 168 pesticide components collected from local street markets (see text for analysis conditions).

Pesticides identified*WHO classificationUseChemical classNumber of samples%

Chlorpyrifos Class IIAcaricide, insecticide, nematicideOrganophosphate2514.9
EndosulfansClass IIAcaricide, insecticideOrganochlorine2414.3
CarbofuranClass IBAcaricide, insecticide, nematicidesCarbamates2213.1
FenitrothionClass IIInsecticideOrganophosphate2213.1
LindaneClass IIAcaricide, insecticide, rodenticideOrganochlorine148.3
PropoxurClass IIAcaricide, insecticideCarbamate127.1
DeltamethrinClass IIInsecticidePyrethroid63.7
TetramethrinMinimal hazard in normal useInsecticidePyrethroid53.0
DimethoateClass IIAcaricide, insecticide, nematicideOrganophosphate42.4
ChlorobenzilateConsidered discontinued for pesticide useAcaricideOrganochlorine31.8
CypermethrinClass IIAcaricide, insecticidePyrethroid31.8
Methyl parathionClass IAInsecticideOrganophosphate31.8
SulfurMinimal hazard in normal useAcaricide, fungicideUnclassified31.8
DicofolClass IIIAcaricideOrganochlorine21.2
MalathionClass IIIAcaricide, insecticideOrganophosphate21.2
MonocrotophosClass IBAcaricide, insecticideOrganophosphate21.2
NapthaleneConsidered discontinued for pesticide useFumigant insecticideUnclassified21.2
ProfenofosClass IIInsecticideOrganophosphate21.2
CarbarylClass IIAcaricide, insecticideCarbamate10.6
MetolachlorClass IIIHerbicideChloroacetanilide10.6
ChlorfensonClass IIIAcaricideUnclassified10.6
Pirimiphos methylClass IIIAcaricide, insecticideOrganophosphate10.6
TetradifonMinimal hazard in normal useAcaricideUnclassified10.6
Not identifiedUnknownUnknown74.2

*Italicized pesticide components are severely restricted in the United States.
Boldfaced pesticide components are banned in the United States.
Underlined pesticide components are on the United Nations PIC list.