Analytical Chemists and Consultants Services
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Storm Water Particle Size Distribution by WSDOE - TAPE Methodology
Stricter regulations on storm water monitoring and treatment have added more requirements to laboratory analysis regimen. Analytical Resources has developed particle size distribution analysis of suspended sediment in storm water samples that is in compliance with the Washington State Department of Ecology's Technical Assessment Protocol - Ecology (TAPE) Guidelines. Per TAPE methodology, grain size distribution is determined using a combination of wet sieving and utilization of the Beckman Coulter LS13 320 Laser Diffraction Particle Size Analyzer. Suspended sediment concentration is determined according to ASTM D3977, Method C. The distribution results are combined with the concentration data, and are reported in mg/L per Wentworth Scale size fractions. Pricing for this method can be found here. The Beckman Coulter Counter is a versatile instrument which can generate many variations on particle size distribution of water and low volume sediment samples. Please contactus for more information on possible applications for your specific sample needs.
EPA 1613B Dioxins/Furans By High Resolution Mass Spec
EPA method 1613B is available at ARI utilizing the latest advances in both instrumentation and software from Waters. An independent clean room for 1613B sample preparation and features microwave extraction for soils and sediments and SPE extraction for waters. ARI utilizes a unique analytical column that provides superior peak resolution for 2378-TCDD and 2378-TCDF eliminating the need for a confirmation analysis on a separate column. Flexibility with respect to data and method reporting formats are available. Please contact your project manager for more information and pricing.
Alkyl PAH by EPA Method SW8270D-SIM
Analytical Resources has extended its expertise with the SW8270D-SIM (Selected Ion Monitoring) method by testing for a wide range of substituted Alkyl PAH (Polyaromatic Hydrocarbons) in sediments. The Alkyl PAHs range from C1-Decalin to C3-Dibenzo(a)anthracenes. Samples can also be simultaneously analyzed for a standard list of target PAHs. Please contact a project manager if you have any questions about the method or the analyte list. Pricing for the test can be found here.
Analytical Resources is pleased to now offer the testing of Polybrominated Diphenyl Ether (PBDE) congeners in a range of environmental samples. PBDE congeners are similar to PCB congeners in that they are resistant to degradation, bioaccumulate in tissue, and are used in a broad spectrum of industrial applications. Monitoring has shown that these chemicals are ubiquitous in the environment and evidence suggest that PBDEs may cause detrimental health effects in animals and humans.
A selected list of PBDE congeners, representing the major components of common technical grades, are analyzed using a GC equiped with dual capillary columns and an electron capture detector (ECD).
Gasoline additives, or oxygenates, are a concern in the environment as they have been found to have contaminated groundwater through leaking underground gasoline storage tanks (USTs). ARI is now testing for a number of oxygenates, including MTBE, TAME, ETBE, Diisopropyl Ether and tert-Butanol, using volatile GC/MS Method SW8260C.
Low Level Mercury Analysis
Increased public concern with the bioaccumulative effects of Mercury and advances in technology are driving regulatory levels to lower requirements. ARI has validated a modification to the CVAA method to report mercury at 20 parts-per-trillion.