【摘要】 采用氢化物—原子荧光光谱法分析表明:特呈岛红树林中白骨壤古树群落和红海榄群落土壤无砷污染,总砷含量及五态砷合计含量均小于10 mg/kg,其中以残渣态砷和Fe—结合态砷为主,后者占五种形态砷合计的25.6%~72.2%,土壤Fe—结合态砷>交换态砷>Al-结合态砷>Ca—结合态砷。更多还原

【Abstract】 The As concentration analysis using HG-AFS showed that the soils of Ass.Avicennia marina and Ass.Rhizophora stylosa wetlands in Techeng Isle,was not contaminated with As as As<10mg/kg in sampled soils,and the main fractions of As in the soils were in residual phase and in bound to iron with SEP method.As bound to iron was 25.6%～72.2% in total of the As fractions.The As contents: As bound to iron >non-specifically absorbed As>Al-bound As>Ca-bound As.更多还原