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As is the case with the tea leaves themselves, the cellulose fibers boast a large active surface area, allowing the bags to adsorb a significant quantity of heavy metal ions.—Ben Coxworth, New Atlas, 1 Mar. 2025 Out of all the experiments, steeping time made the most difference in tea leaves’ ability to adsorb metal ions.—Tom Gavin, EverydayHealth.com, 27 Feb. 2025 Brewing tea may naturally adsorb heavy metals such as lead and cadmium, according to the study published Monday in the journal ACS Food Science & Technology.—Kristen Rogers, CNN, 26 Feb. 2025 The team found that cellulose tea bags work the best at adsorbing toxic metals from the water while cotton and nylon tea bags barely adsorbed any contaminants at all—and nylon bags also release contaminating microplastics to boot.—Ars Technica, 25 Feb. 2025 Also impactful was the teas’ steeping time, with teas that were brewed for a longer amount of time adsorbing more metal ions than teas that were brewed for a shorter amount of time.—Sam Walters, Discover Magazine, 25 Feb. 2025
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