零价铝在碱性条件下还原吡虫啉

doi:10.11949/j.issn.0438-1157.20161388

化工学报 ›› 2017, Vol. 68 ›› Issue (4): 1646-1651.DOI: 10.11949/j.issn.0438-1157.20161388

零价铝在碱性条件下还原吡虫啉

刘晓¹, 田颖^1,2, 周晓慧¹, 范丹丹¹, 刘宗宇²

1 大连交通大学环境与化学工程学院, 环境科学与技术辽宁省高校重点实验室, 辽宁大连 116028;
2 大连理工大学环境学院, 工业生态和环境工程教育部重点实验室, 辽宁大连 116024

收稿日期:2016-10-07 修回日期:2016-11-11 出版日期:2017-04-05 发布日期:2017-04-05
通讯作者: 田颖
基金资助:
国家自然科学基金项目（21273025）。

Zero valent aluminum as reducer for degradation of imidacloprid in alkaline condition

LIU Xiao¹, TIAN Ying^1,2, ZHOU Xiaohui¹, FAN Dandan¹, LIU Zongyu²

1 Key Laboratory of Environmental Science and Technology, Education Department of Liaoning Province, College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning, China;
2 Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, Liaoning, China

Received:2016-10-07 Revised:2016-11-11 Online:2017-04-05 Published:2017-04-05
Supported by:
supported by the National Natural Science Foundation of China (21273025).

摘要/Abstract

摘要：

采用零价铝（ZVAl）在碱性条件下直接还原吡虫啉，考察了NaOH浓度、反应时间、温度对吡虫啉降解的影响。使用高效液相色谱仪（HPLC）检测。加入过量ZVAl和NaOH的水溶液中，吡虫啉的降解率随NaOH浓度的升高而增大，随反应时间的增长和温度的升高，吡虫啉的降解率增大。采用高效液相色谱-质谱联用仪（HPLC-MS）检测，结果表明吡虫啉的可能降解产物为1-（6-氯吡啶-3-甲基（-2-亚硝基亚氨基吡咯烷、1-（6-氯-3-吡啶甲基（-2-咪唑、2-氯-5-乙基吡啶和2-氯-5-甲基吡啶，并对产物的降解途径进行了分析。

关键词: 吡虫啉, 零价铝, 碱性条件, 还原, 降解, 色谱

Abstract:

Imidacloprid (IMI) was reduced by zero valent aluminum (ZVAl) in adkaline condition and tested by high performance liquid chromatography (HPLC). The effect of NaOH concentration, reactive time and temperature on IMI removal rate were investigated. The IMI removal rate was heavily dependent on NaOH concentration, reaching 27.4%-100% with NaOH concentration from 0.5 to 100.0 mmol·L^-1 and 5 g·L^-1 ZVAl. The reaction process was very fast, leading to higher degradation rate in very short time and achieving 46.3% for only 0.5 h and 88.0% for 4 h in IMI solution with NaOH concentration of 2.5 mmol·L^-1 and 5 g·L^-1 ZVAl. IMI removal rate slightly increased with temperature, reaching from 40.0% to 47.1% at temperature from 20 to 40℃ with NaOH concentration of 1.0 mmol·L^-1, and reaching from 56.3% to 62.3% at temperature from 20 to 40℃ with NaOH concentration of 1.5 mmol·L^-1. The transformation products were analyzed by high performance liquid chromatography mass spectrometer (HPLC-MS). It was found that 1-(4-chlorobenzyl)-N-nitrnsomidazolidin-2-imine, 1-(6-chloro-3-pyridine methyl)-2-imidazole, 2-chloro-5-ethyl pyridine and 2-chloro-5-methyl pyridine were produced during the reduction process of IMI by ZVAl in alkaline condition.

Key words: imidacloprid, zero valent aluminum, alkaline condition, reduce, degradation, chromatography

中图分类号:

X592

刘晓, 田颖, 周晓慧, 范丹丹, 刘宗宇. 零价铝在碱性条件下还原吡虫啉[J]. 化工学报, 2017, 68(4): 1646-1651.

LIU Xiao, TIAN Ying, ZHOU Xiaohui, FAN Dandan, LIU Zongyu. Zero valent aluminum as reducer for degradation of imidacloprid in alkaline condition[J]. CIESC Journal, 2017, 68(4): 1646-1651.

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零价铝在碱性条件下还原吡虫啉

Zero valent aluminum as reducer for degradation of imidacloprid in alkaline condition

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