| 涡旋辅助分散液液微萃取分光光度法测定饮用水中的亚硝酸根 |
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| 引用本文： | 张凯歌,王云鹤,李双莹,郑 智.涡旋辅助分散液液微萃取分光光度法测定饮用水中的亚硝酸根[J].食品安全质量检测技术,2019,10(14):4498-4502. |
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| 作者姓名： | 张凯歌 王云鹤 李双莹 郑 智 |
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| 作者单位： | 河南师范大学环境学院黄淮水环境污染与防治教育部重点实验室河南省环境污染控制重点实验室河南省水处理关键技术国际联合实验室 |
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| 基金项目： | 国家自然科学基金项目(21605040)、国家博士后基金项目(2016M592295)、河南教育厅项目(16A610003) |
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| 摘 要： | 目的建立涡旋辅助分散液液微萃取分光光度法检测饮用水中亚硝酸根的含量。方法在酸性条件下,亚硝酸根与对硝基苯胺和二苯胺反应生成红色偶氮化合物,通过测定红色偶氮化合物间接测定亚硝酸根的含量,以分光光度法检测,外标法定量。确定萃取剂种类,利用正交试验对萃取剂的用量、酸浓度和涡旋时间进行优化。结果在浓度10～200μg/L范围内线性关系良好(r2=0.9912),检出限为2.0μg/L,富集倍数为14。加标回收率为87.3%～106.3%,相对标准偏差0.8%～4.4%。结论该方法具有简单、快速、灵敏度高、准确性好,适用于饮用水中亚硝酸根的日常监测。
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| 关 键 词： | 涡旋辅助分散液液微萃取 分光光度法 饮用水 亚硝酸根 |
| 收稿时间： | 2019/3/26 0:00:00 |
| 修稿时间： | 2019/5/1 0:00:00 |
Determination of nitrite in drinking water by vortex-assisted dispersive liquid-liquid microextraction combined with spectrophotometry |
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| ZHANG Kai-Ge,WANG Yun-He,Li Shuang-Ying and ZHENG Zhi.Determination of nitrite in drinking water by vortex-assisted dispersive liquid-liquid microextraction combined with spectrophotometry[J].Food Safety and Quality Detection Technology,2019,10(14):4498-4502. |
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| Authors: | ZHANG Kai-Ge WANG Yun-He Li Shuang-Ying and ZHENG Zhi |
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| Affiliation: | School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, International Joint Laboratory on Key Techniques in Water Treatment, Henan Province, Henan Normal University,School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, International Joint Laboratory on Key Techniques in Water Treatment, Henan Province, Henan Normal University,School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, International Joint Laboratory on Key Techniques in Water Treatment, Henan Province, Henan Normal University and School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, International Joint Laboratory on Key Techniques in Water Treatment, Henan Province, Henan Normal University |
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| Abstract: | |
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| Keywords: | vortex-assisted dispersive liquid-liquid microextraction spectrophotometry drinking water nitrite |
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