Table 4.

Extraction efficiency using the optimized method

AsIII (mg/kg)	AsV (mg/kg)	AsIII + AsV (mg/kg)a	Total arsenic (mg/kg)b	Extraction efficiency (%)c
6.67 ± 2.68d	1.84 ± 1.15	8.53 ± 3.49	8.32 ± 3.25	99.85 ± 0.007

^aSum of AsIII and AsV was determined by high-performance liquid chromatography coupled with inductively coupled plasma mass spectrometer spectrometry (HPLC–ICP-MS)

^bTotal arsenic was determined using ICP-MS after digestion

^cRatio of AsIII + AsV to total arsenic

^dData are represented as mean value ± standard deviation (n = 34)