In order to achieve the ambient level detection limits required by the Clean Water Act, the EPA developed a number of analytical methods specifically for metals at “ultra-trace” levels. These methods include EPA 1630 for methylmercury, EPA 1631 for low-level mercury, EPA 1632 for arsenic species, EPA 1638 for trace metals, and EPA 1640 for trace metals specifically in seawater.
However, they found that one of the greatest difficulties in obtaining accurate data at such low concentrations was due to contamination occurring from the improper collection, handling, and transportation of samples.
Therefore, “clean” sample handling techniques were developed, as described in EPA 1669: Sampling Ambient Water for Trace Metals at EPA Water Quality Criteria Levels.
On October 28, 2013, Brooks Rand Labs is partnering with BSK Associates to hold a full-day training course in Golden River, CA (outside of Sacramento) on the theoretical and practical application of EPA 1669. Register by October 1st and pay only $250! To learn more, view the EPA 1669 Training Course Brochure and Registration Form.
We are very excited to announce that the method proposed by Brooks Rand Labs in response to an AOAC Call for Methods for an ICP-MS method for the analysis of low-level arsenic, cadmium, mercury, and lead in food was accepted by the AOAC Expert Review Panel on Heavy Metals (pending several clarifications). First Action Status will be granted once the provisos are received by AOAC. To receive a copy of the method once it is published by AOAC, please contact BRL Customer Service Manager, Tiffany Stilwater.
Brooks Rand Labs organized an interlaboratory comparison study for Arsenic Speciation in Food and Juice, in which 41 labs from around the world participated in. The study was initiated to provide a reliable means for laboratories to evaluate their methods for the analysis of difference forms of arsenic in rice, kelp, and apple juice. Click here to download the report for the study.
The results of this study were also presented at the AOAC Annual Meeting in Chicago on August 27th (download presentation). Brooks Rand Labs plans to conduct this study on an annual basis; if interested in participating in future studies contact BRL President, Michelle Briscoe.