以下为句子列表：
英文: Batch data of aerobic microbiodegradation rate constants Kb, of phenylthio, phenylsulfinyl ,phenylsulfonyl acetates have been determined,and the qualitative relationships between their Kb and chemical structures were analyzed based on it.
中文: 本文测定了一批苯硫基(亚砜基、砜基)乙酸酯类化合物的好氧微生物降解速率常数K_b,在此基础上对这类化合物的结构与其生物降解速率之间的关系进行了分析。
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英文: nitro-4-methysulfonyl benzoic acid is synthesized from 4-methysulfonyl toluene by nitration and oxygenation, using sodium dichromate as an oxidizing agent.
中文: 本研究以对甲砜基苯甲酸为原料,经硝化、重铬酸钠氧化,制得2硝基4甲砜基苯甲酸,两步反应总收率达80%,产品纯度≥99%。
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