ICPMS measurements. The samples which were prepared using Ultraclave III microwave, and were measured using
ICP-MS Agilent 7500 cs series. RF plasma power was 1500W, and the carrier gas flow rate was 0.82 L min-1.
HG-QFAAS measurements. A Hitachi hydride system HFS-3 coupled with a Hitachi Zeeman Z-500 AAS was used,
and total arsenic was detected at 193.7 nm.