Riaz Ghazala, Tabinda Amtul Bari, Iqbal Shakir, Yasar Abdullah, Abbas Mateen, Khan Abdul Muqeet, Mahfooz Yusra, Baqar Mujtaba
a Sustainable Development Study Centre, GC University Lahore , Lahore , Pakistan.
b Department of Psychology , International Islamic University Islamabad , Islamabad , Pakistan.
Int J Phytoremediation. 2017 Oct 3;19(10):894-898. doi: 10.1080/15226514.2017.1303808.
Extensive use of Pesticides in agriculture and its surface runoff in river water is a major environmental concern. The present study evaluated the phytoremediation potential of Eichornia crassipes, Pistia strateotes and algae (Chaetomorpha sutoria, Sirogonium sticticum and Zygnema sp.) for organochlorine and pyrethroid pesticides. Water and plant samples were extracted by liquid phase and solid phase extraction respectively and analyzed by high-performance liquid chromatography. Eleven treatments (T1-T11) with and without plants were used for phytoremediation of organochlorine and pyrethroid pesticides. During the experiment, P. strateotes, E. crassipes and algae (C. sutoria, S. sticticum and Zygnema sp.) showed the highest removal efficiency with 62 (71% root, 29% shoot), 60 (67% root, 33% shoot), and 58% respectively for organochlorine and 76 (76% root, 24% shoot), 68 (69% root, 31% shoot), and 70% respectively for pyrethroids for the respective aquatic plants. Dissipation rate constant of treatments with plants (T2, T3, T5, T6, T8, and T9) was significantly higher (p < 0.05) as compared to that of treatments without plants (T10 and T11, control) for both organochlorine and pyrethroid. The bioconcentration factor of pyrethroid treatments (T3, T6, and T9) was significantly higher (p < 0.05) as compared to that of organochlorine treatments (T2, T5 and T8). The removal efficiency of E. crassipes, P. strateotes and algae (C. sutoria, S. sticticum and Zygnema sp.) for pyrethroids was significantly higher (p < 0.01) as compared to that of organochlorine.
农业中广泛使用农药及其在河水中的地表径流是一个主要的环境问题。本研究评估了凤眼莲、大薸和藻类（苏氏刚毛藻、针杆藻和双星藻属）对有机氯和拟除虫菊酯类农药的植物修复潜力。水和植物样品分别通过液相和固相萃取进行提取，并通过高效液相色谱法进行分析。使用有植物和无植物的11种处理（T1 - T11）对有机氯和拟除虫菊酯类农药进行植物修复。在实验过程中，大薸、凤眼莲和藻类（苏氏刚毛藻、针杆藻和双星藻属）对有机氯的去除效率最高，分别为62%（根71%，茎29%）、60%（根67%，茎33%）和58%，对拟除虫菊酯类的去除效率分别为76%（根76%，茎24%）、68%（根69%，茎31%）和70%。对于有机氯和拟除虫菊酯类，有植物的处理（T2、T3、T5、T6、T8和T9）的消散速率常数显著高于无植物的处理（T10和T11，对照）（p < 0.05）。拟除虫菊酯类处理（T3、T6和T9）的生物富集系数显著高于有机氯处理（T2、T5和T8）（p < 0.05）。凤眼莲、大薸和藻类（苏氏刚毛藻、针杆藻和双星藻属）对拟除虫菊酯类的去除效率显著高于有机氯（p < 0.01）。
