九龙江口碘的地球化学行为
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摘要: 作者测定了九龙江口水中溶解碘的形态及其分布与盐度关系,发现总碘(∑I)、碘酸根(IO3-)和碘离子(I-)都与盐度成正的线性关系,这些结果表明,河口水中溶解碘的形态呈现保守行为.河水中I-和IO3-形态的碘含量分别为2.40μg/l和<1.0μg/l,I-是河水中碘的主要存在形态,海水中IO3-和I-形态的碘含量分别为39.4μg/l(S=27.5)和4.00μg/l,IO3-;是海水中碘的主要存在形态,作者还研究了间隙水中可溶碘的分布与深度的关系,间隙水中的碘以I-形态存在.另外,还测定了从沉积物到上覆水可溶碘的表观通量,其通量值为2.4(15℃)和27μmol/(m2·d)(30℃).
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