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首页> 外文期刊>International Journal of Environmental Research and Public Health >Acetaldehyde Removal from Indoor Air through Chemical Absorption Using L-Cysteine
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Acetaldehyde Removal from Indoor Air through Chemical Absorption Using L-Cysteine

机译：使用半胱氨酸通过化学吸收从室内空气中去除乙醛

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The irreversible removal of acetaldehyde from indoor air via a chemical reaction with amino acids was investigated. To compare effectiveness, five types of amino acid (glycine, L-lysine, L-methionine, L-cysteine, and L-cystine) were used as the reactants. First, acetaldehyde-laden air was introduced into aqueous solutions of each amino acid and the removal abilities were compared. Among the five amino acids, L-cysteine solution showed much higher removal efficiency, while the other amino acids solutions didn’t show any significant differences from the removal efficiency of water used as a control. Next, as a test of the removal abilities of acetaldehyde by semi-solid L-cysteine, a gel containing L-cysteine solution was put in a fluororesin bag filled with acetaldehyde gas, and the change of acetaldehyde concentration was measured. The L-cysteine-containing gel removed 80% of the acetaldehyde in the air within 24 hours. The removal ability likely depended on the unique reaction whereby acetaldehyde and L-cysteine rapidly produce 2-methylthiazolidine-4-carboxylic acid. These results suggested that the reaction between acetaldehyde and L-cysteine has possibilities for irreversibly removing toxic acetaldehyde from indoor air.
机译：研究了通过与氨基酸的化学反应不可逆地去除室内空气中乙醛的方法。为了比较效果，使用了五种氨基酸（甘氨酸，L-赖氨酸，L-蛋氨酸，L-半胱氨酸和L-胱氨酸）作为反应物。首先，将载有乙醛的空气引入每种氨基酸的水溶液中，并比较其去除能力。在这五个氨基酸中，L-半胱氨酸溶液的去除效率要高得多，而其他氨基酸溶液与作为对照的水的去除效率没有明显差异。接下来，作为半固体L-半胱氨酸对乙醛的去除能力的测试，将包含L-半胱氨酸溶液的凝胶放入装有乙醛气体的氟树脂袋中，并测量乙醛浓度的变化。含L-半胱氨酸的凝胶在24小时内除去了空气中80％的乙醛。去除能力可能取决于独特的反应，即乙醛和L-半胱氨酸迅速产生2-甲基噻唑烷-4-羧酸。这些结果表明乙醛与L-半胱氨酸之间的反应具有从室内空气中不可逆地去除有毒乙醛的可能性。

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