While researchers have been proposing magnetic powdered activated carbon (MPAC) for more than a decade, these materials are not yet commercially available in North America (though they are in Japan).

中文翻译：

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磁性粉末活性炭：用于水处理的有希望的吸附剂？

尽管研究人员已经提出了磁性粉末活性炭（MPAC）的建议，但是这些材料在北美尚未在市场上销售（尽管它们在日本）。