Gamma radiation/H2O2 treatment of a nonylphenol ethoxylates: Degradation, cytotoxicity, and mutagenicity evaluation
Gamma radiation/H2O2 treatment of a nonylphenol ethoxylates: Degradation, cytotoxicity, and mutagenicity evaluation
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DOI：
10.1016/j.jhazmat.2015.06.045
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发表时间：
2015-12-15
影响因子：
13.6
通讯作者：
Bhatti, Ijaz Ahmad
中科院分区：
文献类型：
--
作者：
Iqbal, Munawar;Bhatti, Ijaz Ahmad
研究了γ-辐射/H2 O2处理壬基酚聚氧乙烯醚（NPEO）的效果，并以降解率、化学需氧量（COD）、总有机碳（TOC）和毒性降低率为指标评价了处理效果。辐解副产物的测定采用傅立叶变换红外光谱（FTIR）、高效液相色谱（HPLC）和气相色谱质谱（GC MS）技术。低质量的羧酸，醛，酮和乙酸被确定为NPEO降解的副产物。NPEO样品经15 kGy/4.58%H_2O_2的吸收剂量辐照后，降解率超过90%。洋葱（Allium cepa）（A.细胞毒性试验采用溶血试验，致突变性试验采用艾姆斯试验（TA 98和TA 100菌株）。COD和TOC的降低分别大于70%和50%。伽马辐照/H2 O2处理显示细胞毒性和致突变性显著降低。A. cepa，溶血和虾试验显示细胞毒性分别降低68.65%，77%和94%。NPEO-6、NPEO-9和NPEO-30经15 kGy/4.58%H2O2的吸收剂量辐照后，致突变性分别降低62%、74%和79%（TA 98）和68%、78%和82%（TA 100）。NPEO-6比NPEO-9和NPEO-30更有效地解毒，并且结果表明γ辐射/H2 O2处理具有矿化和解毒NPEO的潜力。(C)2015爱思唯尔B. V.保留所有权利。
Gamma radiation/H2O2 treatment of nonylphenol polyethoxylates (NPEO) was performed and treatment effect was evaluated on the basis of degradation, chemical oxygen demand (COD) and total organic carbon (TOC), and toxicity reduction efficiencies. The radiolytic by-products were determined by Fourier Transform Infrared Spectroscopy (FTIR), High-Performance Liquid Chromatography (HPLC), and Gas Chromatography Mass Spectrometry (GC MS) techniques. Low mass carboxylic acids, aldehyde, ketone, and acetic acid were identified as the by-products of the NPEO degradation. NPEO sample irradiated to the absorbed dose of 15 kGy/4.58% H2O2 showed more than 90% degradation. Allium cepa (A. cepa), brine shrimp, heamolytic tests were used for cytotoxicity study, while mutagenicity was evaluated through Ames test (TA98 and TA100 strains) of treated and un-treated NPEO. The reductions in COD and TOC were greater than 70% and 50%, respectively. Gamma radiation/H2O2 treatment revealed a considerable reduction in cytotoxicity and mutagenicity. A. cepa, heamolytic and shrimp assays showed cytotoxicity reduction up to 68.65%, 77%, and 94%, respectively. The mutagenicity reduced up to 62%, 74%, and 79% (TA98) and 68%, 78%, and 82% (TA100), respectively of NPEO-6, NPEO-9, and NPEO-30 irradiated to the absorbed dose of 15 kGy/4.58% H2O2. NPEO-6 detoxified more efficiently versus NPEO-9 and NPEO-30 and results showed that Gamma radiation/H2O2 treatment has the potential to mineralize and detoxify NPEO. (C) 2015 Elsevier B.V. All rights reserved.