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https://www.selleckchem.com/products/p5091-p005091.html 60-60.0 ng mL-1 with the R2 values from 0.9990 to 0.9996 for beverage samples. At the signal to noise ratio of 3 (S/N = 3), the method LODs for the analytes were 0.10-0.15 ng mL-1 for water samples and 0.20-0.50 ng mL-1 for lemon black tea beverage, respectively. Good repeatability was achieved with the relative standard deviations of less than 7%. The results showed that the SPE-HPLC method can be used for the determination of chlorophenols in environmental water and foodstuffs samples.Furfuryl alcohol (FFA) is a furan derivative potentially hazardous to human health, and it is now ubiquitously found in foods and used for identifying singlet oxygen (1O2) in environmental studies. However, current analytical methods for FFA in water are mostly based on gas chromatography and liquid chromatography (LC), which inevitably employ organic solvents as extractants or eluents that can result in harmful wastes production and extra treatment costs. To solve this issue, we herein developed a green analytical method to measure FFA without using organic solvents by a tailored ion chromatography (IC) equipped with ultraviolet (UV) detector. The method demonstrated a calibration curve fitting well (R2 > 0.99) for a wide FFA concentration range (i.e., 0.1 ∼ 10.0 mg/L) and a method detection limit (0.031 mg/L) comparable to LC method. The recoveries of FFA dosed into real samples exceeded 86.4% with the relative standard deviations below 2.5%. Next, we examined the property and reactivity of FFA through the method. It was found that FFA's acid-dissociation coefficient (i.e., pKa) was not 9.55, which disagrees with an earlier report. FFA was resistant to 254 nm UV or hydrogen peroxide (H2O2) but vulnerable to H2O2-assisted 254 nm UV or 185 nm vacuum UV, confirming that FFA was sensitive to hydroxyl radicals. Interestingly, FFA was degraded to less extent in water dosed with both sodium hypochlorite (NaOCl) and H2O2 than that dos

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