第 38 卷第 6 期 |  | Vol. 38 No. 6 | 2008 年 12 月 | Dec 2008 |
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所屬欄目:功能材料
水溶性β-環(huán)糊精聚合物與1,3-二-(4-硝基苯基)-三氮烯包結物對銀離子的顯色反應研究 |
羅六保1,江城松2
(1. 江西應用技術(shù)職業(yè)學(xué)院,江西 贛州 341000;2. 江西省南昌大學(xué) 化學(xué)系,江西 南昌 330047) |
摘 要:水溶性β-環(huán)糊精聚合物(β-CDP)在水相中替代表面活性劑與1,3-二-(4-硝基苯基)-三氮烯(DNPT)形成的包結物(β-CDP-DNPT)對銀離子有顯著(zhù)的顯色效果。DNPT被β-CDP包結后,具有增溶增敏效果,對銀離子的選擇性顯著(zhù)改善。干擾離子Cu(II)、Hg(II)、Zn(II)、Co(II)、Ni(II)、Pb(II)等允許量達到50~500 μg/25 mL。該法應用于相紙樣品及國家標樣中痕量銀的測定,結果滿(mǎn)意。 |
關(guān)鍵詞:β-環(huán)糊精聚合物;三氮烯;銀;分光光度法;顯色劑 |
中圖分類(lèi)號:O636.1 文獻標識碼:A 文章編號:1009-9212(2008)06- 0058-03 |
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A Study on Chromogenic Reaction of the Inclusion Complex Prepared from Water Soluble β-CDP and DNPT for Silver |
LUO Liu-bao1,JIANG Cheng-song2
(1. Jiangxi College of Applied Technology,Ganzhou 34100,China;2. Chemistry Department of Nanchang University,Nanchang 330047,China) |
Abstract:A β-CDP-DNPT inclusion complex was prepared from water soluble β-cyclodextrin polymer(β-CDP)instead of surfactants and 1,3-di-(4-nitrophenyl)-triazene(DNPT),and was used as the chromogenetic reagent for silver(I). The results showed that β-CDP could strengthen DNPT solubility and sensitivity,and improve the selectivity for silver(I). The tolerance limit of interference the metal ions such as Cu(II)、Hg(II)、Zn(II)、Co(II)、Ni(II)、Pb(II)was 50~500 μg/25 mL. Thee method proved to be satisfactory in the determination of trace silver in the film samples and the state standard samples. |
Key words:β-cyclodextrin polymer;triazene;silver;spectrophotometry;chromogenic reagent |
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作者簡(jiǎn)介:羅六保(1975-),男,江西寧都人,講師,碩士,主要從事有機化學(xué)及精細化工教學(xué)與研究。(E-mail:llbchemist@126.com)
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收稿日期:2008-12-01
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