Radiolytic degradation of carbaryl in aqueous solution by gamma-irradiation/H2O2 process

被引：3

作者：

Solpan, Dilek ^{[1
]}

Ibrahim, Khalid Elmamoun Ahmed ^{[2
]}

Elbashir, Abdalla Ahmed ^{[3
]}

Mehrnia, Masoomeh ^{[1
]}

Ahmed, Mustafa Mohamed Osman ^{[2
]}

Guven, Olgun ^{[1
]}

机构：

[1] Hacettepe Univ, Dept Chem, TR-06800 Ankara, Turkey

[2] Sudan Atom Energy Commiss, Dept Radiat Proc, POB 3001, Khartoum 11111, Sudan

[3] Univ Khartoum, Fac Sci, Chem Dept, POB 321, Khartoum, Sudan

来源：

APPLIED RADIATION AND ISOTOPES | 2022年 / 184卷

关键词：

Advanced oxidation processes (AOPs); Carbaryl (CBL); Gamma; hydrogen peroxide (H2O2); Hydrogen peroxide effect; RATE CONSTANTS; PESTICIDES; WATER; RADIATION; OXIDATION; RADICALS; CYTOTOXICITY; MUTAGENICITY;

D O I：

10.1016/j.apradiso.2022.110210

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this study the synergetic effect of gamma-ray and hydrogen peroxide on the degradation of carbaryl in aqueous solution were investigated. Aqueous solution of carbaryl was exposed to five different irradiation doses in the presence and absence of hydrogen peroxide. The intermediate species and aliphatic acids formed during irradiation were determined by Gas chromatography-Mass spectrometer and Ion Chromatography, respectively. It was found that the gamma-irradiation accelerate the degradation process of carbaryl with and without hydrogen peroxide. The inconstancy in pH, dissolved oxygen and total acidity was evaluated before and after treatment by gamma. It was found that the pH was decline from 6.71 to 5, dissolved oxygen from 2.64 to 0.9 mgL(-1) and the total acidity was raised from 0.44 to 0.61 mgL(-1). The entirely degradation of Carbaryl takes place at 3.0 kGy and 9.6 mM hydrogen peroxide, H2O2. As a consequence, the possible degradation pathway was suggested.

引用

页数：10

共 39 条

[21] Highly stable, rapid colorimetric detection of carbaryl pesticides by azo coupling reaction with chemical pre-treatment [J].