分析化学
分析化學
분석화학
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
2001年
3期
258-261
,共4页
阻抑作用%动力学光度法%邻二硝基苯%中性红
阻抑作用%動力學光度法%鄰二硝基苯%中性紅
조억작용%동역학광도법%린이초기분%중성홍
研究发现, 在盐酸介质中,痕量邻二硝基苯能灵敏地阻抑高碘酸钾氧化中性红褪色。中红性、盐酸、高碘酸钾的最佳用量分别为0.55,0.60,0.60 mL,反应温度80℃,反应时间6 min。研究了该阻抑褪色反应的最佳条件及动力学参数, 建立了一种测定痕量邻二硝基苯的新方法。该法测定线性范围为0.0~4.0 μg/L, 检测限为7.7×10-7 g/L。用于环境水样中邻二硝基苯的测定,结果满意。
研究髮現, 在鹽痠介質中,痕量鄰二硝基苯能靈敏地阻抑高碘痠鉀氧化中性紅褪色。中紅性、鹽痠、高碘痠鉀的最佳用量分彆為0.55,0.60,0.60 mL,反應溫度80℃,反應時間6 min。研究瞭該阻抑褪色反應的最佳條件及動力學參數, 建立瞭一種測定痕量鄰二硝基苯的新方法。該法測定線性範圍為0.0~4.0 μg/L, 檢測限為7.7×10-7 g/L。用于環境水樣中鄰二硝基苯的測定,結果滿意。
연구발현, 재염산개질중,흔량린이초기분능령민지조억고전산갑양화중성홍퇴색。중홍성、염산、고전산갑적최가용량분별위0.55,0.60,0.60 mL,반응온도80℃,반응시간6 min。연구료해조억퇴색반응적최가조건급동역학삼수, 건립료일충측정흔량린이초기분적신방법。해법측정선성범위위0.0~4.0 μg/L, 검측한위7.7×10-7 g/L。용우배경수양중린이초기분적측정,결과만의。
In HCl medium,trace o-dinitrobenzene can sensitively inhibit the discoloration reaction of neutral red oxidized by KIO4. The optimum neagent is 0.55 mL neutral red, 0.60 mL HCl, 0.6 mL KIO4, respectively. The neaction ttmperatune is 80℃, neaction time is 6 min. The optimum condition and kinetic parameters are investigated in detail,a new method for determination of trace o-dinitrobenzene is proposed. The detection limit is 7.7×10-7 g/L and the linear range is 0.0~4.0 μg/L o-dinitrobenzene. It has been applied to the determination of trace o-dinitrobenzene in environmental water sample with satisfactory results.