在对美国气溶胶飞行时间质谱仪(aerosol time-of-flight mass spectrometer,ATOFMS)和中国单颗粒气溶胶质谱仪(single particle aerosol mass spectrometer,SPAMS)前期研究调研的基础上,总结并比较了国内外飞行时间质谱(time-of-flight ...在对美国气溶胶飞行时间质谱仪(aerosol time-of-flight mass spectrometer,ATOFMS)和中国单颗粒气溶胶质谱仪(single particle aerosol mass spectrometer,SPAMS)前期研究调研的基础上,总结并比较了国内外飞行时间质谱(time-of-flight mass spectrometry,TOF-MS)研究中含硫酸盐、硝酸盐、铵盐、有机碳(OC)和元素碳(EC)等5种主要组分颗粒的典型提取条件.结合SPAMS单颗粒谱图的特点,本研究通过限定示踪离子,对5种主要组分的提取方法进行改进,提出了新的SPAMS组分示踪离子提取方法.以北京市2013年1月SPAMS实测数据为例,对不同提取方法的结果进行对比分析.并将本研究方法 SPAMS主要组分结果与离线滤膜样品的实验数据进行对比,验证了本研究所提出的优化方案的合理性.同时指出SPAMS在未来的应用研究中需考虑的因素及进一步深入的研究方向.展开更多
The title compound [Ag(CH3CONHC(S)NH2)2](NO3) has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction. It crystallizes in mo-noclinic, space group P21/c with Mr = 406.20 (C6H1...The title compound [Ag(CH3CONHC(S)NH2)2](NO3) has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction. It crystallizes in mo-noclinic, space group P21/c with Mr = 406.20 (C6H12Ag N5O5S2), a = 12.0680(6), b = 6.8056(5), c = 18.0173(1) ? b = 111.383(4), V = 1377.9(2) 3, Z = 4, Dc = 1.958 g/cm3 , F(000) = 808, = 1.789 mm-1, R = 0.0361 and wR = 0.1015. Of 4185 reflections ((2)max = 55.00?, 3147 were unique (Rint = 0.0174) and 2820 with I > 2(I) were used to solve the structure. The silver(I) atom adopts V-shape geometry with the AgS bond distance of 2.4271(7) and 2.7229(9) , respectively. Seven atoms of one acetylthiocarbamide ligand are coplanar, while only four atoms of another acetylthio-carbamide ligand are fairly planar. The [Ag(CH3CONHC(S)NH2)2]+ cation and nitrate anion NO3- are connected by hydrogen bonds to form a three dimensional hydrogen bonding network..展开更多
文摘在对美国气溶胶飞行时间质谱仪(aerosol time-of-flight mass spectrometer,ATOFMS)和中国单颗粒气溶胶质谱仪(single particle aerosol mass spectrometer,SPAMS)前期研究调研的基础上,总结并比较了国内外飞行时间质谱(time-of-flight mass spectrometry,TOF-MS)研究中含硫酸盐、硝酸盐、铵盐、有机碳(OC)和元素碳(EC)等5种主要组分颗粒的典型提取条件.结合SPAMS单颗粒谱图的特点,本研究通过限定示踪离子,对5种主要组分的提取方法进行改进,提出了新的SPAMS组分示踪离子提取方法.以北京市2013年1月SPAMS实测数据为例,对不同提取方法的结果进行对比分析.并将本研究方法 SPAMS主要组分结果与离线滤膜样品的实验数据进行对比,验证了本研究所提出的优化方案的合理性.同时指出SPAMS在未来的应用研究中需考虑的因素及进一步深入的研究方向.
基金This work was supported by the Natural Science Foundation of Shandong province (No.Y2002B06) and Science Research Foundation of Qingdao University of Science and Technology (No. 03Z08)
文摘The title compound [Ag(CH3CONHC(S)NH2)2](NO3) has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction. It crystallizes in mo-noclinic, space group P21/c with Mr = 406.20 (C6H12Ag N5O5S2), a = 12.0680(6), b = 6.8056(5), c = 18.0173(1) ? b = 111.383(4), V = 1377.9(2) 3, Z = 4, Dc = 1.958 g/cm3 , F(000) = 808, = 1.789 mm-1, R = 0.0361 and wR = 0.1015. Of 4185 reflections ((2)max = 55.00?, 3147 were unique (Rint = 0.0174) and 2820 with I > 2(I) were used to solve the structure. The silver(I) atom adopts V-shape geometry with the AgS bond distance of 2.4271(7) and 2.7229(9) , respectively. Seven atoms of one acetylthiocarbamide ligand are coplanar, while only four atoms of another acetylthio-carbamide ligand are fairly planar. The [Ag(CH3CONHC(S)NH2)2]+ cation and nitrate anion NO3- are connected by hydrogen bonds to form a three dimensional hydrogen bonding network..
