Table 4.

Recovery experiment of iodine speciation in reference soil samples

IO3/µg g−1I/µg g−1IO3 added/µg g−1I added/µg g−1Recovery of IO3 /%Recovery of I /%Total iodine/µg g−1Reference value of total I/µg g−1pHConductivity/mS/mSoil typeOrigin
GBW07402ND1.6412.712.7951021.61.8 ± 0.28.7342.1KastanozemsNeimenggu
GBW07403ND1.3012.712.7901041.31.3 ± 0.28.3229.3AlfisolsShandong
GBW074050.173.9912.712.71011004.23.8 ± 0.55.3216.3FerralosolsHunan
GBW074070.5616.912.712.7889617.519.0 ± 25.5734.2LixisolsGuangdong
GBW07408ND1.5612.712.789981.61.7 ± 0.28.5234.4ArenosolsShanxi

ND: Not detected.