【摘 要】
：
A rapid and reliable high performance liquid chromatographic(HPLC) method for the simultaneous determination of heterocyelic compounds,namely nicotinic acid,nic
【机 构】
：
Department of Mathematics,Science,Social Science and Technology,Hong Kong Institute of Education,Hon
论文部分内容阅读
A rapid and reliable high performance liquid chromatographic(HPLC) method for the simultaneous determination of heterocyelic compounds,namely nicotinic acid,nicotinamide,and 3-cyanopyridine,in industrial effluent is described.A Φ4.6 mmx 150 mm,5 μm C-18 reversed phase stationery phase,and a methanol-acetonitrile-water tertiary mobile phase (20:20:60v/v) were used for separation.The detection wavelength of a diode array (DAD) was set at 216 nm with a bandwidth of 16 nm.Phenol was used as an inteal standard.The regression equations revealed a linear relationship between the concentration of the analytes injected and the peak area detected by DAD.The limits of detection (S/N = 3) ranged from 0.70 to 1.18 mg L-1,the recoveries ranged from 87% to 102% and the precision expressed as % RSD intra-day and inter-day varied from 0.9 to 3.9 and 1.2 to 5.6,respectively.This method is rapid,sensitive and suitable for the monitoring of nicotinic acid,nicotinamide,and 3-cyanopyridine in effluent of related pharmaceutical manufacturing plants.
其他文献
Bismuth silicate (Bi4Si3O12) nanopowders were prepared by the sol-gel method.Tetraethyl orthosilicate (TEOS) and Bi2O3 were used as the starting materials.The p
To explore the protein-level mechanism of action verapamil in acute myocardial infarcted rats, the myocardial proteome was analyzed by two-dimensional electroph
A single phase of monoclinic MnV2O6 nanoflakes was prepared by a hydrothermal process at 180℃ starting materials and using acetic acid to adjust the pH value o
实行干部能上能下,是干部制度改革的一项重要内容。现在的问题是,人们对这一改革的认识还不完全一致,在某些问题上还存在模糊的看法。因而,不仅在干部中而且从社会的舆论方
A modified nano-calcium carbonate (R-CCR)was prepared by coating a layer of unsaturated hydroxyl-fatty acid on the surface of CCR powders using a solid state me
A new pentacyclic triterpenoid,urs-12-en-29α-oic acid-3β-ol (1),was obtained from the ethanol extract of Chinese herb Oldenlandia cantonensis How.The structur
各省、自治区、直辖市教育厅（教委）、财政厅（局）、人力资源社会保障厅（局），新疆生产建设兵团教育局、财务局、人力资源社会保障局，教育部直属各高等学校： 为深入贯彻党的十八大精神，按照全国教育信息化工作电视电话会议和《教育部等九部门关于加快推进教育信息化近期几项重点工作的通知》要求，尽快建成国家教育管理公共服务平台，教育部、财政部、人力资源社会保障部就进一步加强教育管理信息化的工作要求通知如下：