Skip to main content

Table 1 Recovery and precision values for permethrin determination in spiked samples and treated wood then analysed using developed chemical sensors and HPLC

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

Method Wood (spiked samples) Treated wood
  Type of sample Recovery Precision Type of sample Recovery Precision
    RSD (%)    RSD (%)
Chemical Sensors Sample A* 130 5.2 Kempas** 126 6.2
Sample B* 125 6.8    
Sample C* 120 5.3    
Sample A* 129 6.2 Rubberwood*** 124 5.2
Sample B* 123 7.0    
Sample C* 122 5.2    
HPLC Sample A* 95 4.8 Kempas** 98 3.5
Sample B* 101 3.5    
Sample C* 98 4.1    
Sample A* 97 4.4 Rubberwood*** 99 2.8
Sample B* 105 4.3    
  Sample C* 94 3.9    
  1. *Sample A = 10 μM; Sample B = 20 μM; Sample C = 50 μM.
  2. **Kempas was treated with 0.02% w/w of permethrin preservative. The treatment was done using vacuum impregnation vessel.
  3. ***Rubberwood was treated with 0.02% w/w of permethrin preservative. The treatment was done using vacuum impregnation vessel.