| 第 33 卷第 2 期 |  | Vol. 33 No. 2 | | 2003 年 4 月 | Apr 2003 |
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所屬欄目：分析與測試
間接分光光度法測定試劑鹽酸中的微量氟 |
| 尹躍群; 李支援(湖南省化學(xué)試劑產(chǎn)品質(zhì)量監測站; 長(cháng)沙環(huán)境保護職業(yè)技術(shù)學(xué)院; 湖南株洲; 412008; 湖南長(cháng)沙; 410004) |
| 摘 要：研究了在一定的酸性條件下 ,氟與鋯生成穩定的無(wú)色絡(luò )合物 ,使相對性較差的鋯—二甲酚橙絡(luò )合物的紅色褪去 ,從而間接測定了試劑鹽酸中的微量氟 ,該溶液的最大吸收波長(cháng)為 535nm ,50ml體系里含氟量在 0～ 25μg范圍內測定結果呈現很好的線(xiàn)性關(guān)系。氟回收率在 98.8%～100.5 %,相對標準偏差為 3.5 %。 |
| 關(guān)鍵詞：間接分光光度法; 試劑鹽酸; 微量氟 |
| 中圖分類(lèi)號：O657.32 文獻標識碼：A 文章編號：1009-9212(2003)02-0060-02 |
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| Determination of Trace Fuluorine in Reagent Hydrochloric Acid by Indirect Spectrophotometry |
| YIN Yue-qun 1; LI Zhi-yuan 2.（1.Hunan Chemical Reagent Production Quality Control Centre; ZhuZhou Hunan; 412008; China; 2.Changsha Environmental ProteitionVacational College; Changsha Hunan; 410004; China） |
| Abstract：An indirect spectrophotometry was introduced to determine trace amounts of fluorine in chemical reagent hydrochloric acid.In a certain acid solution,fluoride ion reacted with zirconium ion into a stable colorless complex compound,which made less stable Zr-xylenol orange red comples compound fade.So we can indirectly determine trace amounts of fluorine in reagent hydrochloric acid.The sample solution has a maximum absorption band at 535nm. The results of determination show a very good liner relationship betw... |
| Key words：indirect spectrophotometry; reagent hydrochloric Acid; trace amounts of fluorine |
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收稿日期：2002-10-21
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