Effort launched to evaluate pair of laboratory methods

SCCWRP and its partners are kicking off a six-month effort to validate two new laboratory methods for measuring a range of pesticides in aquatic samples, which will help pave the way for statewide accreditation of the methods.

The study, which will hold its kickoff meeting in August, will evaluate the effectiveness of methods that use gas chromatography-mass spectrometry (GC/MS) and liquid chromatography-mass spectrometry (LC/MS/MS) technology, respectively, to measure a suite of more than 100 pesticide analytes in water and passive sampling media.

Currently, California lacks accredited methods for screening such a broad suite of pesticides, especially for samples that were collected via passive sampling methods.

The standard operating procedures (SOPs) for both methods were developed by SCCWRP earlier this year and are currently being evaluated.

SCCWRP’s member agencies and other laboratories are welcome to participate in the study. For more information, contact Dr. Charles Wong or Dr. Danhui Xin.