Acidic methanol methylation is a common derivatization process for haloacetic acid (HAA)
analysis. The Pennsylvania State University at Harrisburg and EPCOR Water Services in
Edmonton, Alberta, Canada, conducted a study on acidic methanol methylation for HAAs. Using the
current methylation conditions (US Environmental Protection Agency method 552.2), the
study observed incomplete methylation of HAAs, especially for trihaloacetic acids, which
could significantly affect the accuracy of these HAA analytical results. The effects of
methylation time, methylation temperature, volume of acidic methanol, and composition of
acidic methanol on methylation efficiency were studied. This research suggests that acidic
methanol methylation efficiency could be improved by increasing the volume of acidic
methanol, methylation temperature, methylation time, or all three. The authors also
investigated other common analytical problems associated with acidic methanol methylation.
Additional studies are suggested to further optimize the acidic methanol methylation
procedure for HAA analysis. Includes 17 references, figures.
| Edition : | Vol. 94 - No. 11 |
| File Size : | 1
file
, 220 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 8 |
| Published : | 11/01/2002 |
