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反向参比流动注射法在线监测海水中亚硝酸盐 被引量:1

On-line Determination of Nitrite in Seawater by Reverse Reference Flow Injection Analysis
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摘要 为了监控海水中亚硝酸盐的污染,建立了一种简单、精确、灵敏的反向参比流动注射分光光度法(rrFIA)测定海水中的亚硝酸盐。方法基于亚硝酸盐(NO2-)与磺胺-N(1-萘基)-乙二胺(END)偶合生成紫色染料,在525nm波长下进行光度检测,定量检测样品中NO2-浓度。进行了测定条件的优化。在最佳实验条件下,该方法在2.0~50.0μg/L的范围内,NO2-浓度与峰高成良好线性关系,检出限为0.7μg/L相对标准偏差为0.844%。实验表明,这种方法适合自动连续测定海水中的NO2-的含量。 In order to monitor the pollution of nitrite in seawater,a simple,accurate and sensitive reverse reference flow injection analysis(rrFIA) spectrophotometric method for determination of nitrite(NO 2-) in seawater is proposed in this paper.The method is based on the coupling reaction between NO 2-and sulfanilamide-N-1-naphthyl ethylenediamine hydrochloride(END).The absorbance of the complex is measured by optical detector at 525 nm.rrFIA variables affecting the system are also discussed.Under the optimal cond...
作者 俞凌云 张新申 孙静 曹凤梅 赵欢欢 杨育杰 YU Ling-yun1; ZHANG Xin-shen1; SUN Jing2; CAO Feng-mei1; ZHAO Huan-huan2; YANG Yu-jie2(1.Light Industry & Textile & Food Engineering; Sichuan University; Chengdu 610065; China; 2.College of Architecture and Environment; China);
出处 《皮革科学与工程》 CAS 北大核心 2010年第3期共5页 Leather Science and Engineering
基金 国家863课题(2007AA09210101)
关键词 流动注射分析 海水 亚硝酸盐 监测 flow injection analysis seawater nitrite monitor
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