Determination of Epichlorohydrin in Potable Water.

摘要

An analytical method for the quantitative determination of epichlorohydrin (ECH) in the concentration range 10-100 microgram/L has been developed. The method consists of gas chromatographic/purge and trap procedures. The LOD is 10 microgram/L; the pooled coefficient of variation is approximately 10% (10-100 microgram/L). ECH recovery is highly dependent on storage conditions (temperature and time) and on ECH concentration. Quantitative results are suspect if sample storage temperature and time exceed 4 deg C and seven days, respectively, and if the ECH concentration exceeds 100 microgram/L. Any compound which co-elutes with ECH under the GC/purge and trap conditions specified is considered an interference. Neither a study of possible interferences nor sample matrix effects has been investigated. The developed analytical method is described in detail in the Appendix.