Analysis of Taste & Odor in Drinking Water
Taste and Odor are recognized as quality factors that affect the acceptability of drinking water. Standard Methods 6040 D provides an analytical procedure for quantifying several organic odor-producing compounds including methylisoborneol and Geosmin (often collectively referred to as MIB and Geosmin). Standard Methods has recently revised Method 6040D to enable Solid Phase Micro Extraction (SPME) of smaller sample volumes to automatically test for up to 20 taste and odor compounds.
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Implementation of novel SPME Arrow for the trace-level analysis of taste and odor compounds in drinking water
Standard Method 6040 details several sample introduction methods that can be used for trace-level analysis of MIB and geosmin in drinking water samples. Included are closed-loops tripping analysis, purge and trap, and solid phase micro extraction (SPME). SPME is the most rapid method that is capable of achieving comparable sensitivity, when coupled with GCMS. The use of SPME Arrow, however, which is more sensitive and robust than conventional SPME fibers, has not been evaluated for use with this method. In this work, we implemented Standard Method 6040D with SPME Arrow, rather than SPME fiber, for the analysis of MIB and geosmin at levels that would occur in T&O events. This workflow will help utilities and environmental labs in managing T&O events quickly and accurately.
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AOC-6000 Plus Multifunctional Autosampler
The AOC-6000 Plus Multifunctional Autosampler enables various syringes injections, including liquid injection, headspace (HS) injection, and solid-phase microextraction (SPME) injection. The automatic syringe exchange RTC (Robotic Tool Changer) function enables continuous sample injection using different syringes. By combining with the Twin Line MS system, different analytical methods such as SPME and HS can be performed continuously without changing the column.
Reference
Standard Methods Committee of the American Public Health Association, American Water Works Association, and Water Environment Federation. 6040 taste and odor compounds In: Standard Methods for the Examination of Water and Wastewater. Lipps WC, Baxter TE, Braun-Howland E, editors. Washington DC: APHA Press.
DOI: 10.2105/SMWW.2882.117