Reaction of 2,6-dichloroquinone-4-chloroimide (Gibbs reagent) with permethrin – an optical sensor for rapid detection of permethrin in treated wood

Chemistry Central Journal

Siti Aishah Hasbullah¹  Musa Ahmad³  Lee Yook Heng¹  Mohamad Nasir Mat Arip² 

[1]Faculty of Science and Technology/South East Asia Disaster Prevention Research Institute (SEADPRI), Universiti Kebangsaan Malaysia, Bangi, Selangor DE 43600, Malaysia

[2]Forest Products Division, Forest Research Institute Malaysia, Selangor DE 52109, Malaysia

[3]Faculty of Science and Technology, Universiti Sains Islam Malaysia (USIM), Nilai, Negeri Sembilan 71800, Malaysia

关键词: Optical sensors;    Sol–gel;    Nafion;    Permethrin;    2,6-dichloro-p-benzoquinone-4-chloroimide;   

Others  :  787871
DOI  :  10.1186/1752-153X-7-122

 received in 2013-03-14, accepted in 2013-06-27,  发布年份 2013

【 摘 要 】

Background

A novel optical sensor for the rapid and direct determination of permethrin preservatives in treated wood was designed. The optical sensor was fabricated from the immobilisation of 2,6-dichloro-p-benzoquinone-4-chloroimide (Gibbs reagent) in nafion/sol–gel hybrid film and the mode of detection was based on absorption spectrophotometry. Physical entrapment was employed as a method of immobilisation.

Results

The sensor gave a linear response range of permethrin between 2.56–383.00 μM with detection limit of 2.5 μM and demonstrated good repeatability with relative standard deviation (RSD) for 10 μM at 5.3%, 100 μM at 2.7%, and 200 μM at 1.8%. The response time of the sensor was 40 s with an optimum response at pH 11.

Conclusions

The sensor was useful for rapid screening of wood or treated wood products before detailed analysis using tedious procedure is performed. The validation study of the optical sensor against standard method HPLC successfully showed that the permethrin sensor tended to overestimate the permethrin concentration determined.

【 授权许可】

   
2013 Arip et al.; licensee Chemistry Central Ltd.

【 图 表 】

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