In this paper,automobile exhaust particles of Gol and Santana 3000 were studied by spectromicroscopy.The STXM results show that the single particulate is sized at 500 nm,with the mass distribution reducing towards the...In this paper,automobile exhaust particles of Gol and Santana 3000 were studied by spectromicroscopy.The STXM results show that the single particulate is sized at 500 nm,with the mass distribution reducing towards the center.The N 1s NEXAFS spectra of automobile exhaust particles have similar structure with those of nitrates,which can be deduced as the main chemical species of nitrogen in automobile exhaust particles.There are minor amounts of ammoniums and organic nitrogen compounds in automobile exhaust particles.A single Gol automobile exhaust particle was stack scanned in the energy range of 396-416 eV.By principal component analysis and cluster analysis,it can be deduced that there are main three chemical species of nitrogen.The particle surface consists of mainly nitrates,the inside consists of mainly ammonium and organic nitrogen compounds,and the middle layer is an intergradation consisting of mainly nitrates and organic nitrogen compounds.展开更多
毒鼠强,又名没鼠命、四二四、一扫光、三步倒,化学名为四亚甲基二砜四氨.英文名Tetremthylne Disulfote tra mine,简称Tetramine,为有机氮化合物[1].因其对人的毒性也很大,在国外和我国早已禁止使用,但是中毒死亡事故却一再发生.因其为...毒鼠强,又名没鼠命、四二四、一扫光、三步倒,化学名为四亚甲基二砜四氨.英文名Tetremthylne Disulfote tra mine,简称Tetramine,为有机氮化合物[1].因其对人的毒性也很大,在国外和我国早已禁止使用,但是中毒死亡事故却一再发生.因其为剧毒,又无确定的特效解毒药,毒物鉴定常无条件迅速明确,给其早期救治带来了一定的困难.1998年以来,我们成功救治了后经毒物鉴定确实为毒鼠强中毒者40例,其中2001年2月27日发生的一起119例中毒事件,我院直接担负了39例患者的救治,取得了成功,总结如下.展开更多
基金Acknowledgements The authors gratefully acknowledge the financial support of this work by the National Natural Science Foundation of China （No. U1510122）. The authors declare that the experiments comply with the current laws of China.
基金Project supported by the Main Direction Program of Knowledge Innovation of Chinese Academy of Sciences,China (Grant No. KJCX2-YW-N38) the Special Foundation for Major Basic Research Program of Shanghai,China (Grant No. 08JC1422600)+1 种基金the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. 54095501D)Shanghai Natural Science Fundation (Grant No. 10ZR1436600)
文摘In this paper,automobile exhaust particles of Gol and Santana 3000 were studied by spectromicroscopy.The STXM results show that the single particulate is sized at 500 nm,with the mass distribution reducing towards the center.The N 1s NEXAFS spectra of automobile exhaust particles have similar structure with those of nitrates,which can be deduced as the main chemical species of nitrogen in automobile exhaust particles.There are minor amounts of ammoniums and organic nitrogen compounds in automobile exhaust particles.A single Gol automobile exhaust particle was stack scanned in the energy range of 396-416 eV.By principal component analysis and cluster analysis,it can be deduced that there are main three chemical species of nitrogen.The particle surface consists of mainly nitrates,the inside consists of mainly ammonium and organic nitrogen compounds,and the middle layer is an intergradation consisting of mainly nitrates and organic nitrogen compounds.
文摘毒鼠强,又名没鼠命、四二四、一扫光、三步倒,化学名为四亚甲基二砜四氨.英文名Tetremthylne Disulfote tra mine,简称Tetramine,为有机氮化合物[1].因其对人的毒性也很大,在国外和我国早已禁止使用,但是中毒死亡事故却一再发生.因其为剧毒,又无确定的特效解毒药,毒物鉴定常无条件迅速明确,给其早期救治带来了一定的困难.1998年以来,我们成功救治了后经毒物鉴定确实为毒鼠强中毒者40例,其中2001年2月27日发生的一起119例中毒事件,我院直接担负了39例患者的救治,取得了成功,总结如下.
