The redissolved solutions were concentrated with SPE (Oasis SAX, HLB cartridges, Waters, United States ... chromatographic column, Waters BEH-C18 column (3.0 × 150 mm, 3.5 μm); column temperature, ...

All water samples were filtered through 0.7 μm GF/C Whatman filters prior to solid-phase extraction (SPE). The samples were spiked with 50 μL 1 mg/L of isotope-labele ISTDs. Each water sample was then ...

Traditional solid phase extraction (SPE) revolutionized sample preparation, but it often involves high solvent consumption and complex procedures. Micro solid phase extraction (μSPE) offers a ...

We sell different types of products and services to both investment professionals and individual investors. These products and services are usually sold through license agreements or subscriptions ...

Since the mid-1800s, there have been dozens of rifle and revolver cartridges chambered for lever-action rifles. Most have come and gone without much fanfare, but a handful changed the game.

Reviewers have tested some of the products below and may have received some products from the manufacturers for free. All opinions are the reviewers’ own. These full-spectrum gummies are ...

Hemp gummies and cannabidiol (CBD) gummies are candies that may promote sleep, calm, and pain relief. While hemp seed oil and CBD come from the same plant, they have different chemical properties ...

If you’re looking to try CBD but don’t like the taste from CBD gummies or oils, CBD capsules could be a solution for you. Take a look at our picks to get your search started. Cannabidiol (CBD ...