采用碱性亚甲蓝萃取去除蛋白质、硫化物等干扰，然后经酸性亚甲蓝萃取法分析未经处理或仅简单处理生活污水中的阴离子表面活性剂浓度。
The interferences of protein and sulfide in the domestic wastewater are extracted with alkaline methyleneblue, and then the concentration of anionic surfactant is detected by using acid methyleneblue.
恒顺香醋乙酸乙酯萃取物具有弱自由基清除活性，主要清除活性成分为酚性和酸性化合物。
An ethyl acetate extract of Hengshun aromatic vinegar (he) exerted a weak radical scavenging activity, and the main components were phenolic and acidic compounds.
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