Lancaster Laboratories recently received new certification to use the Inductively Coupled Plasma Mass Spectrometer (ICP-MS) to perform metals analysis on a variety of environmental matrices. The certification from the Florida Department of Health, a NELAP accrediting authority, includes a comprehensive list of metals by SW-846 method 6020 in non-potable water, solid samples, and chemical matrices. Certifications for additional ICP-MS methods, such as EPA 200.8, are pending from several accrediting authorities.

With the new certifications, clients submitting samples to meet regulatory requirements may choose to use ICP-MS for metals that require extremely low detection limits previously attained using graphite furnace techniques. The ICP-MS has many clear advantages over graphite furnace. “The detection limits achieved when we validated this instrument for metals analysis are at least equal to those produced by the graphite furnace. In many cases, the ICP-MS detection limits are significantly lower than the limits we’ve been reporting using other technologies, “ according to Bob Strocko, metals analysis group leader.

Many clients are finding that the multi-element characteristic of ICP-MS is beneficial from both a turnaround time and data package standpoint. With graphite furnace, each element is analyzed individually, while ICP-MS can determine an extensive list of elements simultaneously. This means fewer sample preparations and improved turnaround time. Data packages from ICP-MS analysis are more concise because multiple analyses are achieved with a single scan.

Although commercial ICP-MS instruments have been available for 20 years, recent technological developments have made the technique more reliable. Specifically, features that correct for sample interference and improved methods of sample introduction into the mass spectrometer have moved ICP-MS from the research laboratory into the mainstream environmental laboratory. The ICP-MS methodology compensates for interferences that are common with the graphite furnace. This results in less rework due to failing quality control requirements and simplifies data packages.

All of these benefits add up to quicker turnaround time and lower analytical costs when ICP-MS is used in place of graphite furnace. “Clients like ICP-MS because they get detection limits equal to or better than those from graphite furnace with the speed and efficiency of ICP,” says Strocko. He adds that clients are realizing significant savings by choosing the new technique because the efficiencies gained when using it are passed along in the form of lower fees.

Client service representatives have been contacting clients submitting samples for graphite furnace testing about the benefits of choosing ICP-MS instead, and many have chosen to take advantage of the newer technology. For more information about metals testing, contact your client service representative or business development at (717) 656-2300.