Flow Injection-Spectrophotometric Determination of Total Dissolved Nitrogen in Seawater Based on Quantificational Solenoid Valves
HAN Bin1, CAO Lei1, 2, ZHENG Li1, ZANG Jia-ye1, WANG Xiao-ru1
1. First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China 2. College of Fisheries and Life Science, Shanghai Ocean University，Shanghai 201306, China
Abstract：Using three pipe clamp solenoid valves to replace the traditional six-port valve for sample quota, a set of multi-channel flow injection analyzer was designed in the present paper. The authors optimized optimum instrumental testing condition, and realized determination and analysis of total dissolved nitrogen in seawaters. The construction of apparatus is simple and it has the potential to be used for analysis of total dissolved nitrogen. The sample throughput of total dissolved nitrogen was 27 samples per hour. The linear range of total dissolved nitrogen was 50.0～1 000.0 μgN·L-3 (r≥0.999). The detection limit was 7.6 μgN·L-3. The recovery of total dissolved nitrogen was 87.3%～107.2%. The relative standard deviation for total dissolved nitrogen was 1.35%～6.32% (n=6). After the t-test analysis, it does not have the significance difference between this method and national standard method. It is suitable for fast analysis of total dissolved nitrogen in seawater.
韩 彬1，曹 磊1, 2，郑 立1，臧家业1，王小如1 . 夹管电磁阀定量-流动注射分光光度法测定海水中总溶解氮[J]. 光谱学与光谱分析, 2012, 32(01): 219-222.
HAN Bin1, CAO Lei1, 2, ZHENG Li1, ZANG Jia-ye1, WANG Xiao-ru1 . Flow Injection-Spectrophotometric Determination of Total Dissolved Nitrogen in Seawater Based on Quantificational Solenoid Valves. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(01): 219-222.
[1] HJ/T 199—2005(Water Quality-Determination of Total-Itrogen by Gas-Phase Molecular Absorption Spectrometry)(水质-总氮的测定-气相分子吸收光谱法). Professional Standard of Environmental Protection of the People’s Republic of China(中华人民共和国环境保护行业标准). [2] HJ/T34—2007(Water Quality-Determination of Nitrate-Nitrogen-Ultraviolet Spectrophotometry(水质-硝酸盐氮的测定-紫外分光光度法). Professional Standard of Environmental Protection of the People’s Republic of China(中华人民共和国环境保护行业标准). [3] YANG Xi-min，LI Shuan-de，YANG Shu-zhen(杨喜民，李拴德，杨术真). Chinese Journal of Clinical Laboratory Science(临床检验杂志)，1997，15(6)：339. [4] WANG Xue-feng，SHI Xuan，PI Yun-qing(王学锋，史 选，皮运清). Chinese J. Anal. Chem.(分析化学)，2005，33(6)：856. [5] WANG Yang，FAN Shi-hua(王 洋，范世华). Chem. J. Chinese Universities(高等学校化学学报)，2004，25(4)：137. [6] WANG Jian-fei，CHEN Shi-yong，XING Su-zhi，et al(汪建飞，陈世勇，邢素芝，等). Gansu Agr. Sci. and Techn.(甘肃农业科技)，2004(5)：39. [7] JIANG Ting-fu，LI Ju-bai，LI Chen，et al(姜廷福，李菊白，李 辰，等). Chinese Journal of Analysis Laboratory(分析试验室)，2004，23(5)：34. [8] XU Xia，YING Xing-hua，DUAN Bin-wu，et al(徐 霞，应兴华，段彬伍，等). Chinese J. Anal. Chem.(分析化学)，2007, 35(11)：1586. [9] ZHU Xiang-rong，LI Na，SHI Xin-yuan，et al(朱向荣，李 娜，史新元，等). Chem. J. Chinese Universities(高等学校化学学报)，2008，29(5)：906. [10] ZHAO Ping，CHEN Jin-hui，XIAO Jing-ze(赵 萍，陈金辉，肖靖泽). Life Science Instruments(生命科学仪器)，2007，5(6)：19. [11] SUN Xi-yan，HONG Ling-cheng，LIU Ai-ping，et al(孙西艳，洪陵成，刘爱平，等). Chemical Research(化学研究)，2009，20(3)：54. [12] HAN Bin，CAO Lei，ZHENG Li，et al(韩 彬，曹 磊，郑 立，等). Chinese J. Anal. Chem.(分析化学)，2010，38(12): 1832. [13] CHEN Ai-qin，HUANG Yin-bo(陈爱芹，黄银波). City and Town Water Supply(城镇供水)，2008, (4)：57. [14] REN Yan-bing, YANG Hui-lin，CAO Lei, et al(任妍冰，杨慧林，曹 雷，等). Jiangsu Environmental Science and Technology(江苏环境科技)，2008，21(suppl. 1)：48. [15] WANG Xiao-li(王小丽). Environment(环境)，2007，(10)：92. [16] GB 17378.4—2007. The Specification for Marine Monitoring-Part 4: Seawater Analysis(海洋监测规范第四部分：海水分析). National Standards of the People’s Republic of China(中华人民共和国国家标准).
