Frithjof K?pper of the Scottish Association for Marine Science and colleagues report that the accumulated form of iodine is iodide and that it serves as an antioxidant, protecting the surface of the seaweed.
Frithjof Kpper of the Scottish Association for Marine Science and colleagues report that the accumulated form of iodine is iodide and that it serves as an antioxidant, protecting the surface of the seaweed.
Using an interdisciplinary array of techniques (including synchrotron X-ray absorption spectroscopy, voltammetry, ion chromatography and enzymatic assays), the researchers found that the iodine in kelp is present as iodide ions.
Then, using GC-MS, aerosol particle counting, and spectrophotometry, the team showed that on the seaweed surface and in the apoplast iodide acts as an antioxidant, detoxifying both aqueous oxidants and ozone. The latter releases molecular iodine into the atmosphere - which gives the seaside its characteristic smell - and leads to the formation of particles that can act as cloud condensation nuclei.
Sustainable Green Solvents in Microextraction: A Review of Recent Advancements
March 27th 2024Conventional sample preparation can be time- and resource-consuming, and a green analytical methodology can be a game-changer for scientists, in addition to facilitating selective and sensitive separations.
Transferring Methods to Compact and Portable HPLC
February 14th 2024The current trend in laboratory equipment design is the miniaturization of laboratory instruments. Smaller-scale HPLC instruments offer benefits that cannot be matched by analytical-scale equipment, especially in the areas of portability, reduced fluid volumes, and reduced operating costs. Yet, the miniaturization of laboratory equipment has brought with it a unique set of challenges, including transferring methods to compact LC. Capillary LC expands the use of LC to applications not currently done using conventional LC in a wide array of application areas, including pharmaceutical, food and beverage, petrochemical, environmental, and oil and gas. Greg Ward, Axcend’s CEO wrote, “Customers want an HPLC system with a small footprint, low flow rates and green chemistry.” Join his podcast where he shares method transfer in these application areas.
High-Throughput Analysis of Volatile Compounds in Air, Water, and Soil Using SIFT-MS (Apr 2024)
March 27th 2024This study demonstrates high-throughput analysis of BTEX compounds from several matrices (air, water and soil). Detection limits in the single-digit part-per-billion concentration range (by volume) are readily achievable within seconds using SIFT-MS, because sample analysis is achieved without chromatography, pre-concentration, or drying. We also present a calibration approach that enables speciation of ethylbenzene from the xylenes in real time.