建立了一种利用微晶蒽吸附分离富集环境水样中痕量Cu(Ⅱ)的新方法.研究表明,pH =3.0时,Cu(Ⅱ)与1-(2-吡啶偶氮)-2-萘酚形成红棕色螯合物被微晶蒽定量吸附,而Pb(Ⅱ)、in(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Cd(Ⅱ)、Zn(Ⅱ)、Fe(Ⅲ)和Al(Ⅲ)等完全留在溶液中,从而实现Cu(Ⅱ)与它们的分离.该方法可直接用于1L水样中痕量Cu(Ⅱ)的分离与富集,富集倍数达200倍,回收率91.0％～104.0％,最低检出限为0.026 μg/L；应用于不同水样中Cu(Ⅱ)的测定,结果令人满意.
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