| 总磷测定中温度浓度时间对显色的影响 |
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| 引用本文： | 张丰如,汤兵,苑星海.总磷测定中温度浓度时间对显色的影响[J].环境科学与技术,2005,28(6):40-41. |
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| 作者姓名： | 张丰如 汤兵 苑星海 |
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| 作者单位： | 广东工业大学,环境科学与工程学院,广州,510090;广东嘉应学院化学系,梅州,514015;广东工业大学,环境科学与工程学院,广州,510090;广东嘉应学院化学系,梅州,514015 |
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| 基金项目： | 广东省梅州市重点科技项目（2001-25）;嘉应学院科学研究项目（2002-3） |
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| 摘 要： | 对钼酸铵分光光度法测定水质中总磷时温度、浓度、时间与显色反应的规律进行了研究,给出了吸光度对温度、浓度和显色时间的变化曲线,和不同温度下的标准曲线的线性相关性,指出了不同温度时,吸光度随时间的变化。从而得到了达到最大显色所需要的时间,以指导标准曲线的绘制,提高样品测定精度。
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| 关 键 词： | 钼酸铵分光光度法 总磷 最大显色 |
| 文章编号： | 1003-6504(2005)06-0040-02 |
| 收稿时间： | 2004-08-30 |
| 修稿时间： | 2004-12-10 |
Effects of Temperature,Concentration and Time on Determination of Total Phosphorus |
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| ZHANG Feng-ru,TANG Bing,YUAN Xing-hai.Effects of Temperature,Concentration and Time on Determination of Total Phosphorus[J].Environmental Science and Technology,2005,28(6):40-41. |
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| Authors: | ZHANG Feng-ru TANG Bing YUAN Xing-hai |
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| Institution: | ZHANG Feng-ru~ |
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| Abstract: | The relationship between temperature,concentration,time and chromogenic reaction were studied during determining total phosphorus of water samples by ammonium molybdate spectrophotometric method.The change curves of the absorption with temperature,concentration and chromogenic time,linear correlation of the standard curves in different temperatures were given;the changes of the absorption with time in different temperatures were pointed out;the maximum chromogenic time were gotten,which could have a help to draw better standard curves and to improve the precision of the detection. |
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| Keywords: | ammonium molybdate spectrophotometric method total phosphorus maximum chromogenesis |
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