5′-硝基水杨基荧光酮分光光度法测定钼
Spectrophotometric Determination of Molybdenum(Ⅵ) with 5′-Nitro-Salicylfluorone and Its Application
摘 要
研究了5′-硝基水杨基荧光酮分光光度测定钼的方法.在磷酸介质中,表面活性剂OP存在下,钼(Ⅵ)与5′-硝基水杨基荧光酮形成稳定的桔红色络合物,其最大吸收波长为528 nm,表观摩尔吸光率ε528=1.22×105L·mol-1·cm-1,钼的质量浓度在0.30 mg·L-1以内符合比耳定律.方法应用于不含钨、钛或其含量极低的碳钢及低合金钢中微量钼的测定,所得结果与标准值相符.
5′-硝基水杨基荧光酮
钼
碳钢
低合金钢
Spectrophotometry
5′-Nitro-salicylfluorone
Molybdenum(Ⅵ)
Carbon steel
Low alloy steel5′
Abstract
5′-Nitrosalicylfluorone (5′-NSF) was used as chromogenic reagent in the spectrophotometric determination of molybdenum(Ⅵ).In a dil.H3PO4 medium and in the presence of non-ionic surfactant OP,a stable and orangered colored complex was formed between Mo(Ⅵ) and 5′-NSF,with absorption maxima at the wavelength of 528 nm,and molar absorptivity (ε528) of 1.22×105L·mol-1·cm-1.Beer′s law was kept with concentration of Mo(Ⅵ) within 0.30 mg·L-1.The proposed method has been used in the determination of microamounts of molybdenum in carbon steel and low alloy steel containing no or small amounts of tungsten and titanium giving results in consistency with the standard values.
中图分类号 O657.32
所属栏目 工作简报
基金项目 山东省教育厅科研基金资助项目(No.03C05)
收稿日期 2006/3/1
修改稿日期
网络出版日期
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备注张立芳(1958-),女,河北阳原人,高级讲师,研究方向为应用化学.
引用该论文: ZHANG Li-fang,CAO Wei,FU Yan-jing,ZHANG Si-bao,QIN Cheng-bing. Spectrophotometric Determination of Molybdenum(Ⅵ) with 5′-Nitro-Salicylfluorone and Its Application[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2007, 43(9): 751～752
张立芳,曹伟,傅艳静,张思宝,秦承兵. 5′-硝基水杨基荧光酮分光光度法测定钼[J]. 理化检验－化学分册, 2007, 43(9): 751～752
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参考文献
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【13】Li Zaijun,Pan Jiaomai,Tang Jian.Determination of trace molybdenum in vegetable and food samples by spectrophotometry with p-carboxyphenylfluorone[J].Analytical and Bioanalytical Chemistry,2002,374:1125-1131．
【2】郭競南,卢子良,陈忠书.新试剂5′-硝基水杨基荧光酮胶束增溶分光光度法测定痕量锗[J].分析试验室,1991,10(3):13-14．
【3】曹伟,王正祥,付佩玉,等.铝-5′-硝基水杨基荧光酮-溴化十六烷基吡啶显色反应的研究和应用[J].分析试验室,1995,14(3):25-27．
【4】郭忠先,余丽加.5′-硝基水杨基荧光酮分光光度法测定微量铬的研究[J].分析测试学报,1996,15(6):41-45．
【5】付佩玉,王正祥,曹伟,等.5′-硝基水杨基荧光酮与锆显色反应及其应用[J].岩矿测试,1997,16(3):238-240．
【6】付佩玉,曹伟,王正祥,等.5′-硝基水杨基荧光酮与铁显色反应的研究与应用[J].理化检验-化学分册,1998,34(4):158-159．
【7】付佩玉,曹伟,王正祥,等.微乳液介质中5′-硝基水杨基荧光酮光度法测定微量铅[J].分析化学,2000,28(5):597-600．
【8】敖登高娃,孟全胜.5′-硝基水杨基荧光酮分光光度法测定茶叶中微量锰[J].分析试验室,2002,21(4):77-79．
【9】潘教麦,田文,严恒太,等.二溴羟基苯基荧光酮吸光光度法测定钢中痕量钼[J].理化检验-化学分册,1991,27(2):70-71,74．
【10】周振太,潘教麦.二溴邻硝基苯基荧光酮光度法测定钼[J].冶金分析,1998,18(6):42-43．
【11】蒋伟锋,黄良祥.邻硝基苯基荧光酮-吐温80吸光光度法测定钢铁中微量钼[J].理化检验-化学分册,2000,36(8):355-357．
【12】Li Zaijun,Pan Jiaomai,Tang Jian.Spectrophotometric determination of trace molybdenum in plants and seeds with 3,5-dibromo-4-hydroxyphenylflurone[J].Analyst,2001,126:1154-1159．
【13】Li Zaijun,Pan Jiaomai,Tang Jian.Determination of trace molybdenum in vegetable and food samples by spectrophotometry with p-carboxyphenylfluorone[J].Analytical and Bioanalytical Chemistry,2002,374:1125-1131．
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