Table 5.

IC₁₀ and IC₅₀ values and cross-reactivity of a set of analogues structurally related to parathion-methyl by phage ELISA.

Compound	Structure	IC10 (μg L−1)	IC50 (μg L−1)	CR (%)
Parathion-methyl		0.6	1.4	100
Parathion		1.6	4.2	33.3
Fenitrothion		1.1	2.7	51.9
Cyanophos		3.4	10.3	13.6
EPN		5.9	21.1	6.6
Paraoxon-methyl		29.2	92.1	1.5
Paraoxon		29.0	85.7	1.6
Fenitrooxon		28.9	88.7	1.6
Dicapthon		59.3	199.6	0.7
Famphur		5850.1	17142.1	0.008
Isocarbophos		>50000	>50000	<0.003
Fenthion		>50000	>50000	<0.003
Triazophos		>50000	>50000	<0.003
Chlorpyrifos		>50000	>50000	<0.003
Chlorpyrifos-methyl		>50000	>50000	<0.003
Phoxim		>50000	>50000	<0.003
Malathion		>50000	>50000	<0.003
Phorate		>50000	>50000	<0.003
Dimethoate		>50000	>50000	<0.003
Acephate		>50000	>50000	<0.003
Dichlorvos		>50000	>50000	<0.003
Tolclofos-methyl		>50000	>50000	<0.003
Azinphos-methyl		>50000	>50000	<0.003