工作场所苯等有机溶剂浓度超标2 ~25倍。
Benzene concentrations in work place were2 ~ 25times over hygienic standard.
方法：调查深圳市福田区工业企业有机溶剂使用情况，并对生产环境空气有机溶剂浓度进行测定。
Methods: Investgating use status of organic solvent in factories, and monitoring concentration of organic solvent in production environment.
低浓度有机溶剂的存在有利于抑菌活性的提高。
Some organic solvents could improve its activity at low concentration.
以该反应收率为目标，研究了反应物料与有机溶剂的配比、反应温度和碱液浓度等因素的影响。
The effects of the ratio of reactants to organic solvent, reaction temperature and concentration of aqueous sodium hydroxide on the yield of trim-tolyl phosphate were investigated.
介绍了一种能用于低、高浓度有机溶剂蒸气的回收装置。
This paper presents a recoverer used for low and high concentration organic solvent vapor.
结果表明，小分子有机凝胶的形成及其稳定性与有机溶剂种类、凝胶因子浓度和凝胶因子中碳链长度密切相关。
It is indicated that the formation and stability of low-molecular weight organogels are related to varieties of solvents, concentrations of the gelators and lengths of alkyl chains.
结果四种有机溶剂完全分离，在所考察的浓度范围内具有良好的线性。
Results Four kinds of organic solvents separated completely. It appeared a good linear relationship in the experimental concentration.
结果四种有机溶剂完全分离，在所考察的浓度范围内具有良好的线性。
Results Four kinds of organic solvents separated completely. It appeared a good linear relationship in the experimental concentration.
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