| 反相流动注射催化光度法测定废水中的亚硝酸根 |
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| 引用本文： | 訾言勤,孟国防.反相流动注射催化光度法测定废水中的亚硝酸根[J].岩矿测试,2001,20(2):108-110. |
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| 作者姓名： | 訾言勤 孟国防 |
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| 作者单位： | 淮北煤炭师范学院化学系, |
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| 基金项目： | 安徽省工业重点基金项目(皖科学92-19H8)；煤炭工业部科研基金(煤科字96-374) |
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| 摘 要： | 采用反相流动注射技术与催化光度法相结合，用微机化流动注射分析仪准确控制反应时间，优化了实验条件，克服了催化光度法反应时间难以控制引起的方法精密度、准确度不高的弱点，拟定了测定痕量亚硝酸根的流动注射催化光度方法。分析速度第小时20次，NO2^- 质量浓度在0．00－2．00mg/L，回归方程斜率为0．155。方法直接测定电厂测水中NO2^-的结果与Griess法相符合，RSD＜5．0％（n=5）。
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| 关 键 词： | 亚硝酸根 反相流动注射催化光度法 电厂废水 反应速度 |
| 文章编号： | 0254-5357(2001)02-0108-03 |
| 修稿时间： | 2000年9月19日 |
Determination of Trace Nitrite in Waste Water by Catalytic Spectrophotometry with Reversion Phase Flow Injection System |
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| ZI Yan qin,MENG Guo fang.Determination of Trace Nitrite in Waste Water by Catalytic Spectrophotometry with Reversion Phase Flow Injection System[J].Rock and Mineral Analysis,2001,20(2):108-110. |
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| Authors: | ZI Yan qin MENG Guo fang |
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| Abstract: | A method for the determination of nitrite in waste water by catalytic spectrophotometry with reversion phase flow injection system was developed. Computerized reversion phase flow injection system precisely controlled the reaction time and optimized the experimental conditions. The accuracy and precision for the determination of nitrite was improved remarkably. The linear range for nitrite was 0.00～2.00 mg/L. The sample throughput of the method was 20/h. The method has been applied to the determination of trace nitrite in the waste water from power plant. The results are in agreement with those from Griess method with precision of less than 5.0% RSD (n=5). |
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| Keywords: | nitrite reversion phase flow injection catalytic spectrophotometry |
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