| Method | EPA Method 531.1 |
|---|---|
| Title | MEASUREMENT OF N-METHYLCARBAMOYLOXIMES ANDN-METHYLCARBAMATES IN WATER BY DIRECT AQUEOUS INJECTION HPLC WITH POSTCOLUMN DERIVATIZATION |
| Abstract | The water sample is filtered and a 400-uL aliquot is injected into a reverse phase HPLC column. Separation of the analytes is achieved using gradient elution chromatography. After elution from the HPLC column, the analytes are hydrolyzed with 0.05 N sodium hydroxide (NAOH) at 95'C. The methyl amine formed during hydrolysis is reacted with o-phthalaldehyde (OPA) and 2-mercaptoethanol to form a highly fluorescing derivative which is quantified by a fluorescence detector. |
| CAS # | Compound Name |
|---|---|
| 116-06-3 | Aldicarb |
| 1646-88-4 | Aldicarb sulfone |
| 1646-87-3 | Aldicarb sulfoxide |
| 114-26-1 | Baygon |
| 63-25-2 | Carbaryl |
| 1563-66-2 | Carbofuran |
| 16655-82-6 | 3-Hydroxycarbofuran |
| 2032-65-7 | Methiocarb |
| 16752-77-5 | Methomyl |
| 23135-22-0 | Oxamyl |