The types,chemical structures and distributions of furanocoumarins that are prevalent in citrus essential oils are investigated,especially their skin phototoxicity.
本文调查了柑橘类精油中普遍存在的呋喃香豆素类物质的种类、化学结构与分布,尤其是该类化合物对皮肤的光化学毒性作用。
On the base of study on the models of the discharging dispersion of chemical toxic gas at accident,the discharging diffusion process of ammonia at the accident is assessment and simulated by using Gaussian plume model.
在研究化学毒性气体事故泄漏的扩散模式的基础上 ,利用扩散模型对一氨气泄漏事故排放进行了数值模拟及评价 ,这种方法可为化学品安全评价、环境风险评价管理、风险工程设计、风险责任保险等领域及应急计划制定、事故抢险工作实施提供有效的工具。